Site details,,,,,,,Sampled material,,Archaeomagnetic information,,,,,,,,,,,Reference
Site Name,Region,OS Grid square,Eastings,Northings,Site excavated by,Period,Feature type,Context Description,AM Sample Ref,Produced by,Inclination at site,Declination at site,Alpha-95,Minimum Calendar date (calibrated AM date),Maximum Calendar date (calibrated AM date),Calibration curve used,Date cited at 68% confidence?,Date cited at 95% confidence?,Notes on the archaeomagnetic date,Reference
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Baked clay and carbonised material within the hearth,OSB AM29,"Archaeomagnetic Research Group, University of Bradford",72.1,358.2,3.1,-70,160,Clark et al. (1988),FALSE,TRUE,Two possible age ranges were produced: AD1960-present or 70BC-AD160. The earlier age range was chosen based on the archaeological evidence,"Z. Outram (2006) A Reassessment of the Iron Age Chronology of the Northern Isles: a Pilot Study at Old Scatness Broch, Shetland. Unpublished PhD thesis, University of Bradford"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Bright red clay within the central hearth,OSB AM30,"Archaeomagnetic Research Group, University of Bradford",74.5,32.8,2.4,920,1000,Clark et al. (1988),FALSE,TRUE,"Three possible age ranges were produced: AD920-1000, 510-440BC or 900-880BC. The later age range was chosen based on the archaeological evidence","Z. Outram & C.M. Batt (in press) Dating at Old Scatness. In Dockrill et al. (eds.) Excavations at Old Scatness, Shetland, Volume 1: The Pictish and Viking Settlement. Shetland Heritage Publications, Lerwick"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Orange brown ash with charcoal flecking in the centre of the structure,OSB AM32,"Archaeomagnetic Research Group, University of Bradford",71.9,8.9,4.5,400,520,Clark et al. (1988),FALSE,TRUE,"Three possible age ranges were produced: AD1450-1550, AD400-520, or AD50-125. The middle age range was chosen based on the archaeological evidence","Z. Outram (2006) A Reassessment of the Iron Age Chronology of the Northern Isles: a Pilot Study at Old Scatness Broch, Shetland. Unpublished PhD thesis, University of Bradford"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,"Red baked clay with burnt bone and charcoal, fading to light brown at the edges of the hearth",OSB AM33,"Archaeomagnetic Research Group, University of Bradford",72.4,2.4,3.1,40,130,Clark et al. (1988),FALSE,TRUE,,"Z. Outram (2006) A Reassessment of the Iron Age Chronology of the Northern Isles: a Pilot Study at Old Scatness Broch, Shetland. Unpublished PhD thesis, University of Bradford"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Kiln,Red-brown clay deposit within the kiln feature,OSB AM34,"Archaeomagnetic Research Group, University of Bradford",52.6,353.2,19.7,120,410,Clark et al. (1988),FALSE,TRUE,"Several of the specimens had negative inclination values, and were removed from the analysis. Two age ranges were produced: AD1220-1450 or AD120-410. The Medieval period date was discounted based on the archaeological evidence.","Z. Outram (2006) A Reassessment of the Iron Age Chronology of the Northern Isles: a Pilot Study at Old Scatness Broch, Shetland. Unpublished PhD thesis, University of Bradford"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,"A small area of red ash contained within kerb [3602], interpreted as a hearth. The majority of the samples were collected from a red-brown material.",OSB AM35,"Archaeomagnetic Research Group, University of Bradford",61.5,17.5,7.1,240,280,Clark et al. (1988),FALSE,TRUE,"Three possible age ranges: AD1420-1435, AD1190-1380 or AD240-280. The alpha-95 exceeded the critical value of 5° used in dating. Only 2 specimens sampled the red fired clay, and returned much higher intensity values than the remaining specimens.","Z. Outram (2006) A Reassessment of the Iron Age Chronology of the Northern Isles: a Pilot Study at Old Scatness Broch, Shetland. Unpublished PhD thesis, University of Bradford"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Bright red patch of clay associated with the hearth,OSB AM38,"Archaeomagnetic Research Group, University of Bradford",69.9,358.7,4.6,50,210,Clark et al. (1988),FALSE,TRUE,"Several age ranges were produced: AD1440-1490, AD1300-1310, AD270-460 or AD50-210. The earliest age range was chosen based on the archaeological evidence, but it did not agree well with the supporting dating evidence","Z. Outram (2006) A Reassessment of the Iron Age Chronology of the Northern Isles: a Pilot Study at Old Scatness Broch, Shetland. Unpublished PhD thesis, University of Bradford"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Clay bedding for the hearth,OSB AM40b,"Archaeomagnetic Research Group, University of Bradford",66.6,358.2,5.0,90,400,Clark et al. (1988),FALSE,TRUE,"Two age ranges were produced: AD1270-1445 or AD90-400. The latter date was discounted based on the archaeological evidence, but the earlier age range did not agree well with the supporting dating evidence","Z. Outram (2006) A Reassessment of the Iron Age Chronology of the Northern Isles: a Pilot Study at Old Scatness Broch, Shetland. Unpublished PhD thesis, University of Bradford"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Kiln,Orange clay within kiln feature,OSB AM43,"Archaeomagnetic Research Group, University of Bradford",73.3,344.1,3.5,-100,20,Clark et al. (1988),FALSE,TRUE,"High intensity values were recorded from the samples. Three age ranges were produced: AD1950-present, AD1760-1780 or 100BC-AD20. The earliest age range was chosen based on the archaeological evidence","Z. Outram (2006) A Reassessment of the Iron Age Chronology of the Northern Isles: a Pilot Study at Old Scatness Broch, Shetland. Unpublished PhD thesis, University of Bradford"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Red brown clay loam,OSB AM45,"Archaeomagnetic Research Group, University of Bradford",80.2,356.2,5.3,710,800,Clark et al. (1988),FALSE,TRUE,"Three possible age ranges were produced: AD1620-1750, AD710-800 or 330-100BC. The 8th century AD date was chosen based on the archaeological evidence","Z. Outram (2006) A Reassessment of the Iron Age Chronology of the Northern Isles: a Pilot Study at Old Scatness Broch, Shetland. Unpublished PhD thesis, University of Bradford"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Fired clay associated with the hearth stones in the centre of the structure,OSB AM46,"Archaeomagnetic Research Group, University of Bradford",73.4,348.8,4.9,-95,90,Clark et al. (1988),FALSE,TRUE,"Two possible age ranges were produced: AD1860-present, or 95BC-AD90. The modern date was discounted based on the archaeological evidence. The date should be treated with caution as it was based on less than 8 specimens","Z. Outram (2006) A Reassessment of the Iron Age Chronology of the Northern Isles: a Pilot Study at Old Scatness Broch, Shetland. Unpublished PhD thesis, University of Bradford"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Red ash material of hearth,OSB AM47,"Archaeomagnetic Research Group, University of Bradford",72.0,353.0,2.0,-75,-10,Clark et al. (1988),FALSE,TRUE,Two possible age ranges were produced: AD1950-present or 75-10BC. The modern date was discounted based on the archaeological evidence,"Z. Outram (2006) A Reassessment of the Iron Age Chronology of the Northern Isles: a Pilot Study at Old Scatness Broch, Shetland. Unpublished PhD thesis, University of Bradford"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Dense ash lens within a discrete area of the North annexe,OSB AM48,"Archaeomagnetic Research Group, University of Bradford",71.8,4.3,5.4,280,520,Clark et al. (1988),FALSE,TRUE,"Several age ranges were produced: AD1960-present, AD1435-1550, AD280-520, AD10-175 or 80-40BC. The AD280-520 age range was chosen based on the archaeological evidence","Z. Outram & C.M. Batt (in press) Dating at Old Scatness. In Dockrill et al. (eds.) Excavations at Old Scatness, Shetland, Volume 1: The Pictish and Viking Settlement. Shetland Heritage Publications, Lerwick"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Patch of red ash and burnt clay,OSB AM53,"Archaeomagnetic Research Group, University of Bradford",72.7,342.9,4.9,-75,-5,Clark et al. (1988),FALSE,TRUE,Two samples broke during sample collection. Two possible age ranges were produced: AD1860-present or 75-5BC. The modern date was chosen based on the archaeological evidence,"Z. Outram (2006) A Reassessment of the Iron Age Chronology of the Northern Isles: a Pilot Study at Old Scatness Broch, Shetland. Unpublished PhD thesis, University of Bradford"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Red ash/clay which seems to be contained in a rough kerb,OSB AM57,"Archaeomagnetic Research Group, University of Bradford",80.9,352.5,3.0,730,780,Clark et al. (1988),FALSE,TRUE,Two possible age ranges: AD1635-1650 or AD730-780. Neither of these dates agree well with the associated radiocarbon dates. The high inclination values suggests that the feature may have slumped,"Z. Outram (2006) A Reassessment of the Iron Age Chronology of the Northern Isles: a Pilot Study at Old Scatness Broch, Shetland. Unpublished PhD thesis, University of Bradford"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Pale orange fired clay hearth,OSB AM58,"Archaeomagnetic Research Group, University of Bradford",74.1,357.4,3.3,-100,135,Clark et al. (1988),FALSE,TRUE,,"Z. Outram (2006) A Reassessment of the Iron Age Chronology of the Northern Isles: a Pilot Study at Old Scatness Broch, Shetland. Unpublished PhD thesis, University of Bradford"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Fired clay and heated flagstone base of the central hearth,OSB AM60,"Archaeomagnetic Research Group, University of Bradford",73.6,352.0,3.3,-90,85,Clark et al. (1988),FALSE,TRUE,Two possible age ranges were produced: AD1930-present or 90BC-AD85. The modern date was discounted based on the archaeological evidence. The date should be treated with caution as it was based on less than 8 specimens,"Z. Outram (2006) A Reassessment of the Iron Age Chronology of the Northern Isles: a Pilot Study at Old Scatness Broch, Shetland. Unpublished PhD thesis, University of Bradford"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Area of fired orange clay,OSB AM61,"Archaeomagnetic Research Group, University of Bradford",72.2,356.3,2.4,-70,-35,Clark et al. (1988),FALSE,TRUE,"Three possible age ranges were produced: AD1960-present, AD55-145 or 70-35BC. The earliest age range was chosen based on the archaeological evidence","Z. Outram (2006) A Reassessment of the Iron Age Chronology of the Northern Isles: a Pilot Study at Old Scatness Broch, Shetland. Unpublished PhD thesis, University of Bradford"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Clay with a surface of rounded pebbles,OSB AM15,"Archaeomagnetic Research Group, University of Bradford",71.0,356.6,5.4,480,790,Rendate v.1.0.0.4b,FALSE,TRUE,,"C.M. Batt (2000). AM15 Old Scatness Broch. Archaeomagnetic Research Group, University of Bradford. Unpublished Laboratory Report"
Dogmersfield Park,Hampshire,SU,771,516,Wessex Archaeology,Post-Medieval,Kiln,Bricks from the kiln were sampled for dating,1DF,Ancient Monuments Laboratory,74.4,352.6,0.9,1690,1725,Clark et al. (1988),FALSE,TRUE,"The kiln was constructed of bricks, with the remains standing c.0.75m high. 19 specimens were collected from 7 bricks: specimens 1DF15 & IDF19 became detached during extraction. The specimens were cut from the bricks in the lab using a rock cutter","P. Linford (2003) Dogmersfield Park, Dogmersfield, Hampshire: Archaeomagnetic Dating Report 2003. English Heritage Centre for Archaeology, unpublished report 54/2003"
26-27 Southampton Street,Greater London,TQ,304,808,Department of Greater London Archaeology (North),Early Medieval,Area of burning,"3 areas of burnt brick earth and sand. The material sampled varied from compact red-orange sand, burnt red sand, reddened soil, and burnt red-yellow clay.",CG01-CG22,Ancient Monuments Laboratory,71.9,358.8,2.2,-210,-70,Clark et al. (1988),FALSE,TRUE,"Assessment of the pilot demagnetisation data indicates that the feature was not sufficiently heated during the firing event, and that the magnetisation acquired was entirely in the viscous domains","P. Linford (1991) Archaeomagnetic dating: 26-27 Southampton Street, Covent Garden, London. Ancient Monuments Laboratory (English Heritage), unpublished report 66/91"
Hunts Farm,Greater London,TQ,566,831,Passmore-Edwards Museum,Roman Britain,Kiln,Baked clay surface thought to be the floor of a Roman pottery kiln,UPHH89 HFU,Ancient Monuments Laboratory,64.9,1.3,1.0,310,405,Clark et al. (1988),FALSE,TRUE,"NRM values very tightly clustered, and the high intensity values indicate that the feature was well heated during the firing event. The subsequent disturbance was minimal, and virtually no viscous remanence is present.","P. Linford (1991) Archaeomagnetic dating: Hunts Farm, Upminster, London. Ancient Monuments Laboratory (English Heritage), unpublished report 63/91"
John Street,Cumbria,NY,394,559,North Pennines Heritage Trust,Medieval,Furnace,"Two stone walls marked the edges of a possible furnace. An area of closely laid flags were contained by the walls, which were set into a layer of soft orange clay (context 234). The clay was sampled for dating",C3 (BR04-AM73),"Archaeomagnetic Research Group, University of Bradford",63.4,358.7,5.1,1390,1475,Clark et al. (1988),FALSE,TRUE,"Several possible age ranges: AD140-440, AD1270-1330, or AD1390-1475. Medieval ceramic evidence indicates that the Roman period date can be discounted.","Z. Outram & C.M. Batt (2004) Archaeomagnetic dating of a feature from the excavations at John Street, Carlisle. Archaeomagnetic Research Group, University of Bradford. Unpublished report BR04-AM73 "
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,intense red material,OSB AM4,"Archaeomagnetic Research Group, University of Bradford",69.2,346.8,7.9,-200,150,Clark et al. (1988),FALSE,TRUE,Two possible age ranges produced: AD1700-present or 200BC-AD150. The earlier range was thought to be more likely based on the supporting dating evidence. The date should be treated with caution as it was based on less than 8 specimens,"C.M. Batt (1996) Old Scatness Broch, AM 4: Laboratory report. Archaeomagnetic Research Group, University of Bradford. Unpublished report"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Fired clay within the central hearth,OSB AM3,"Archaeomagnetic Research Group, University of Bradford",82.9,12.5,7.8,570,840,Clark et al. (1988),FALSE,TRUE,"Two possible age ranges produced: AD570-840 or 350-200BC. The later age range was thought to be more likely based on the archaeological evidence, as well as the radiocarbon dates","Z. Outram & C.M. Batt (in press) Dating at Old Scatness. In Dockrill et al. (eds.) Excavations at Old Scatness, Shetland, Volume 1: The Pictish and Viking Settlement. Shetland Heritage Publications, Lerwick"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Mid-brown clay deposit forming the base of the central hearth,OSB AM7,"Archaeomagnetic Research Group, University of Bradford",81.2,7.8,3.2,730,790,Clark et al. (1988),FALSE,TRUE,"Three possible age ranges were produced: AD1630-1730, AD730-790, or 240-190BC. The age range AD730-790 was thought to be the most likely range based on the archaeological evidence as well as the radiocarbon dating evidence","Z. Outram & C.M. Batt (in press) Dating at Old Scatness. In Dockrill et al. (eds.) Excavations at Old Scatness, Shetland, Volume 1: The Pictish and Viking Settlement. Shetland Heritage Publications, Lerwick"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Burnt area below fire cracked stone - part of a long hearth within the possible Norse structure,OSB AM11,"Archaeomagnetic Research Group, University of Bradford",76.3,22.7,3.7,850,960,Clark et al. (1988),FALSE,TRUE,"Three possible age ranges produced: AD850-960, AD550-700, or 530-300BC. The latest age range was thought to be the more likely based on the archaeological and supporting dating evidence","Z. Outram & C.M. Batt (in press) Dating at Old Scatness. In Dockrill et al. (eds.) Excavations at Old Scatness, Shetland, Volume 1: The Pictish and Viking Settlement. Shetland Heritage Publications, Lerwick"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Yellow/red/grey sandy clay matrix in the centre of the structure,OSB AM12,"Archaeomagnetic Research Group, University of Bradford",76.3,2.0,3.5,750,810,Clark et al. (1988),FALSE,TRUE,"Three possible age ranges produced: AD1600-1690, AD750-810 or 300-100BC. The age range AD750-810 was thought to be more appropriate based on the archaeological and supporting dating evidence","Z. Outram & C.M. Batt (in press) Dating at Old Scatness. In Dockrill et al. (eds.) Excavations at Old Scatness, Shetland, Volume 1: The Pictish and Viking Settlement. Shetland Heritage Publications, Lerwick"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Burnt clay deposit within central hearth,OSB AM14,"Archaeomagnetic Research Group, University of Bradford",75.2,358.0,3.2,500,850,Clark et al. (1988),FALSE,TRUE,"Several possible age ranges were produced: AD1580-1700, AD500-850, 10BC-AD60 or 350-80BC. The AD500-850 age was thought to be the most likely based on the archaeological and supporting dating evidence","Z. Outram & C.M. Batt (in press) Dating at Old Scatness. In Dockrill et al. (eds.) Excavations at Old Scatness, Shetland, Volume 1: The Pictish and Viking Settlement. Shetland Heritage Publications, Lerwick"
The Park,Gloucestershire,SP,083,258,Guiting Manor Amenity Trust,Iron Age,Area of burning,"A large rectangular limestone slab approximately 50 X 45cm, 4cm thick. There was a burnt area, coloured black and grey extending over a circular area some 25cm in diameter",GP hearthstone,"Plymouth Environmental Research Centre, University of Plymouth",70.4,351.0,2.6,see notes,see notes,,FALSE,FALSE,"The magnetisation is consistent with a pre-Roman, c.60BC or very early Roman age. This age must be treated with caution due to the weakness and inhomogeneity of its magnetisation, and as the date is based on less that 8 specimens","D.H. Tarling & C.M. Batt (1995) Archaeomagnetic results from The Park, Guiting Power. Department of Geological Sciences, Plymouth University, unpublished report"
Peldon,Essex,TM,005,156,Colchester Archaeological Group,Iron Age,Hearth,"sea salt drying hearth, clay floor and walls",SEA,,68.5,356.0,1.3,see notes,see notes,,FALSE,FALSE,"Date assigned to the feature: Clark et al. (1988) ""AD1-43"", or Clark (1978, Appendix II, Antiquaries Journal, Vol 58: 57-58) date may ""tentatively be placed in the date range of 10BC-AD40"".",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Chalton Down,Hampshire,SU,734,143,,Early Medieval,Hearth,Flat clay/lime hearth,CHA,,68.0,9.3,3.7,,,,FALSE,FALSE,"Date assigned to the feature ""probably 7th century AD""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Fore Street,Suffolk,TM,160,440,Suffolk Archaeological Unit,Medieval,Kiln,"samples collected from the pottery kiln: the clay floor of the north-east flue, the adjacent stake-hole and the floor of the combustion chamber",AML-8650300,The Clark Laboratory,58.2,4.8,1.6,1270,1350,Clark et al. (1988),FALSE,TRUE,"Date assigned to the feature ""AD1270-1350""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
"Millbrook, Ashdown Forest",East Sussex,TQ,441,296,Wealden Iron Research Group,Early Medieval,Hearth,"Bloomery hearth, clay walls/floor",,,69.9,13.2,5.3,,,,FALSE,FALSE,"Date assigned to this feature: ""AD680-835"" based on C14. Is this quoted at 68% or 95% confidence levels? Young & Clark (1981, 178): ""archaeomagnetic date of furnace gave a 9th century date"" (Medieval Archaeology Journal, vol 25)",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Lurk Lane,"East Riding, Yorkshire",TA,038,392,Humberside Archaeology Unit,Medieval,Hearth,Bowl shaped hearth adjacent to a series of six hearths (also sampled for archaeomagnetic dating: AML-868167 to AML-868172),AML-868173,Ancient Monuments Laboratory,53.3,3.5,1.9,see notes,see notes,Clark et al. (1988),TRUE,FALSE,"Anomalous results - concluded feature tilted by 5-6°. If correct for this, it brings the magnetic direction back onto the calibration curve to tentatively date the feature between AD1250 and the date for AML-868167 (AD1270-1300).","A.J. Clark (1991) Archaeomagnetic dating. In P. Armstrong et al. (eds.) Excavations at Lurk Lane Beverley, 1979-1982. Collis: Sheffield, p234-235"
Gwithian,Cornwall,SW,590,423,Royal Institute of Cornwall,Bronze Age,Hearth,"Site XV, layer 8: Phase II hearth",GW/3,"Research Laboratories for Archaeology and the History of Art, University of Oxford",64.4,7.1,,,,,FALSE,FALSE,"Date assigned to the feature ""c.1700BC"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Gwithian,Cornwall,SW,590,423,Royal Institute of Cornwall,Bronze Age,Hearth,"Site X, layer 3: central hearth in house no.3",GW/1,"Research Laboratories for Archaeology and the History of Art, University of Oxford",64.3,11.5,2.6,,,,FALSE,FALSE,"Date assigned to the feature ""c.1000-950BC"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The magnetic vector was based on less than 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Gwithian,Cornwall,SW,590,423,Royal Institute of Cornwall,Bronze Age,Hearth,"Site X, layer 3: hearth in house no.2, enlargement phase",GW/2,"Research Laboratories for Archaeology and the History of Art, University of Oxford",61.1,11.5,3.0,,,,FALSE,FALSE,"Date assigned to the feature ""c.950-900BC"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Hartshill,Warwickshire,SP,337,936,,Roman Britain,Kiln,Pottery kiln No.1,HL/1,"Research Laboratories for Archaeology and the History of Art, University of Oxford",64.8,351.0,1.8,,,,FALSE,FALSE,"Date assigned to the feature ""AD300-350"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Hartshill,Warwickshire,SP,337,936,,Roman Britain,Kiln,Pottery kiln No.4,HL/4,"Research Laboratories for Archaeology and the History of Art, University of Oxford",62.8,355.8,1.4,,,,FALSE,FALSE,"Date assigned to the feature ""AD340-370"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Hartshill,Warwickshire,SP,337,936,,Roman Britain,Kiln,Pottery kiln No.6,HL/6,"Research Laboratories for Archaeology and the History of Art, University of Oxford",65.9,353.8,2.3,,,,FALSE,FALSE,"Date assigned to the feature ""AD300-400"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Hartshill,Warwickshire,SP,337,936,,Roman Britain,Kiln,Pottery kiln No.7,HL/7,"Research Laboratories for Archaeology and the History of Art, University of Oxford",61.3,358.0,2.8,,,,FALSE,FALSE,"Date assigned to the feature ""AD300-370"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Hartshill,Warwickshire,SP,337,936,,Roman Britain,Kiln,Pottery kiln No.8,HL/8,"Research Laboratories for Archaeology and the History of Art, University of Oxford",58.1,2.7,2.3,,,,FALSE,FALSE,"Date assigned to the feature ""AD180-350"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Hartshill,Warwickshire,SP,337,936,,Roman Britain,Kiln,Pottery kiln No.9,HL/9,"Research Laboratories for Archaeology and the History of Art, University of Oxford",64.6,358.8,1.8,,,,FALSE,FALSE,"Date assigned to the feature ""AD240-300"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Hartshill,Warwickshire,SP,337,936,,Roman Britain,Kiln,Pottery kiln No. 11,HL/11,"Research Laboratories for Archaeology and the History of Art, University of Oxford",65.8,358.0,2.3,,,,FALSE,FALSE,"Date assigned to the feature ""AD100-150"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Hartshill,Warwickshire,SP,337,936,,Roman Britain,Kiln,Pottery kiln No.14A,HL/14A,"Research Laboratories for Archaeology and the History of Art, University of Oxford",66.3,3.6,2.2,,,,FALSE,FALSE,"Date assigned to the feature ""AD100-130"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Hartshill,Warwickshire,SP,337,936,,Roman Britain,Kiln,Pottery kiln No.15,HL/15,"Research Laboratories for Archaeology and the History of Art, University of Oxford",60.3,2.2,3.0,,,,FALSE,FALSE,"Date assigned to the feature ""AD260-300"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Hartshill,Warwickshire,SP,337,936,,Roman Britain,Kiln,Pottery kiln No.18,HL/18,"Research Laboratories for Archaeology and the History of Art, University of Oxford",57.4,2.4,2.1,,,,FALSE,FALSE,"Date assigned to the feature ""AD240-290"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Hartshill,Warwickshire,SP,337,936,,Roman Britain,Kiln,Pottery kiln No.19,HL/19,"Research Laboratories for Archaeology and the History of Art, University of Oxford",64.4,354.8,1.9,,,,FALSE,FALSE,"Date assigned to the feature ""AD135-160"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Hartshill,Warwickshire,SP,337,936,,Roman Britain,Kiln,Pottery kiln No.22,HL/22,"Research Laboratories for Archaeology and the History of Art, University of Oxford",66.9,358.3,1.5,,,,FALSE,FALSE,"Date assigned to the feature ""AD120-145"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Hartshill,Warwickshire,SP,337,936,,Roman Britain,Kiln,Pottery kiln No.28,HL/28,"Research Laboratories for Archaeology and the History of Art, University of Oxford",65.1,359.7,1.8,,,,FALSE,FALSE,"Date assigned to the feature ""AD270-320"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Hartshill,Warwickshire,SP,337,936,,Roman Britain,Kiln,Pottery kiln No.31,HL/31,"Research Laboratories for Archaeology and the History of Art, University of Oxford",56.4,355.7,2.7,,,,FALSE,FALSE,"Date assigned to the feature ""AD180-230"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Hartshill,Warwickshire,SP,337,936,,Roman Britain,Kiln,Pottery kiln No.32,HL/32,"Research Laboratories for Archaeology and the History of Art, University of Oxford",66.4,347.5,4.1,,,,FALSE,FALSE,"Date assigned to the feature ""AD100-150"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Rossington Bridge,South Yorkshire,SK,632,998,,Roman Britain,Kiln,Pottery kiln,RB/1,"Research Laboratories for Archaeology and the History of Art, University of Oxford",60.0,357.2,3.0,,,,FALSE,FALSE,"Date assigned to the feature ""AD150-180"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Rossington Bridge,South Yorkshire,SK,632,998,,Roman Britain,Kiln,Pottery kiln,RB/2,"Research Laboratories for Archaeology and the History of Art, University of Oxford",59.7,2.4,1.6,,,,FALSE,FALSE,"Date assigned to the feature ""AD150-180"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Rossington Bridge,South Yorkshire,SK,632,998,,Roman Britain,Kiln,Pottery kiln,RB/4,"Research Laboratories for Archaeology and the History of Art, University of Oxford",61.5,2.2,1.2,,,,FALSE,FALSE,"Date assigned to the feature ""AD160-175"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Sibson,Cambridgeshire,TL,120,960,,Roman Britain,Kiln,Pottery kiln B,SB/B,"Research Laboratories for Archaeology and the History of Art, University of Oxford",60.9,356.0,4.4,,,,FALSE,FALSE,"Date assigned to the feature ""AD230-270"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Sibson,Cambridgeshire,TL,120,960,,Roman Britain,Kiln,Pottery kiln C,SB/C,"Research Laboratories for Archaeology and the History of Art, University of Oxford",64.9,356.8,2.6,,,,FALSE,FALSE,"Date assigned to the feature ""AD300-400"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Sibson,Cambridgeshire,TL,120,960,,Roman Britain,Kiln,Pottery kiln E,SB/E,"Research Laboratories for Archaeology and the History of Art, University of Oxford",63.3,355.0,1.3,,,,FALSE,FALSE,"Date assigned to the feature ""AD300-400"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Dorchester-on-Thames,Oxfordshire,SU,658,950,,Early Medieval,Hearth,Hearth,DT,"Research Laboratories for Archaeology and the History of Art, University of Oxford",62.0,359.3,4.1,,,,FALSE,FALSE,"Date assigned to the feature ""AD525-575"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Christ Church,Oxfordshire,SP,515,060,,Early Medieval,Hearth,Hearth,CC,"Research Laboratories for Archaeology and the History of Art, University of Oxford",67.0,29.2,2.4,,,,FALSE,FALSE,"Date assigned to the feature ""AD950-1050"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Torskey,Lincolnshire,SK,836,785,,Early Medieval/Medieval,Kiln,Pottery kiln I,TK/1,"Research Laboratories for Archaeology and the History of Art, University of Oxford",65.6,22.1,1.2,,,,FALSE,FALSE,"Date assigned to this feature ""AD1050-1150"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Torskey,Lincolnshire,SK,836,785,,Early Medieval/Medieval,Kiln,Pottery kiln 2,TK/2,"Research Laboratories for Archaeology and the History of Art, University of Oxford",70.0,27.9,1.9,,,,FALSE,FALSE,"Date assigned to the feature ""AD900-1000"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Blundens Wood,Surrey,SU,974,374,,Medieval,Furnace,Glass furnace,BW,"Research Laboratories for Archaeology and the History of Art, University of Oxford",53.7,357.0,1.3,,,,FALSE,FALSE,"Date assigned to the feature ""AD1300-1350"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Clarendon Palace,Wiltshire,SU,182,302,,Medieval,Kiln,Tile kiln,AP,"Research Laboratories for Archaeology and the History of Art, University of Oxford",52.9,8.5,2.8,,,,FALSE,FALSE,"Date assigned to the feature ""AD1237-1252"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Seacourt,Berkshire,SP,486,075,,Medieval,Hearth,central hearth from a stone built house,SE,"Research Laboratories for Archaeology and the History of Art, University of Oxford",60.2,353.0,,,,,FALSE,FALSE,"Date assigned to the feature ""AD1325-1350"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Weston Wood,Surrey,TQ,053,485,,Iron Age,Hearth,baked clay hearth,WW,"Research Laboratories for Archaeology and the History of Art, University of Oxford",65.3,33.5,5.5,,,,FALSE,FALSE,"Date assigned to the feature ""Late Bronze Age/Early Iron Age"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Finavon,Angus,NO,507,557,,Iron Age,Area of burning,vitrified stone in the wall core of the fort,FN,"Research Laboratories for Archaeology and the History of Art, University of Oxford",72.5,350.4,2.2,,,,FALSE,FALSE,"Date assigned to the feature ""500-300BC"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Mancetter,Warwickshire,SP,326,927,,Roman Britain,Kiln,"The floor, walls and pedestal of Kiln 1",MC/1,"Research Laboratories for Archaeology and the History of Art, University of Oxford",65.1,358.0,1.4,,,,FALSE,FALSE,"Date assigned to the feature ""AD155-180"" based on the pottery evidence. The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Coppergate,North Yorkshire,SE,605,518,York Archaeological Trust,Early Medieval/Medieval,Area of burning,Fired soft red clay,Hearth 25134,,69.7,20.8,5.1,880,900,"Hammo-Yassi (1983), developed from Aitken (1970)",FALSE,FALSE,,"N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Moel-y-Gerrid,Gwynedd,SH,610,310,,Bronze Age/Iron Age,Hearth,Dolerite stones that formed a hearth in the centre of two concentric stone circles. The upper surfaces of the stones were reddened by the heat. The stones were broken but appeared to be in situ,S004,,79.6,350.6,2.7,,,,FALSE,FALSE,"The calibrated age range of the archaeomagnetic date suggested a date ""pre-100BC"", but it was unclear if the feature had tilted in antiquity.","N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Moel-y-Gerrid,Gwynedd,SH,610,310,,Bronze Age/Iron Age,Hearth,Hearth material at the base of a shallow pit/scoop dug into the hut floor and composed of local shale,S036,,72.8,344.1,2.5,,,,FALSE,FALSE,"The calibrated archaeomagnetic date assigned was ""pre-100BC"", and possibly 100 years earlier than hearth S004 but without further evidence this must be taken as being preliminary","N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Little Birches,Staffordshire,SK,009,189,,Medieval,Furnace,"An annealing furnace: tiles held together with a clay lining. The clay lining was plastic in consistency, and of orange-red colouration",2LBW,Ancient Monuments Laboratory,66.6,11.4,1.7,1520,1565,Clark et al. (1988),FALSE,TRUE,Assessment of the magnetisation suggests that the temperatures were not high enough to cause total realignment of the magnetic domains in the clay lining sampled. The magnetisation induced was unstable.,"P. Linford (1993) Archaeomagnetic dating: Little Birches, Wolseley, Staffordshire. Ancient Monuments Laboratory (English Heritage), unpublished report 63/93"
Grovehill,"East Riding, Yorkshire",TA,034,393,"Archaeology Unit, Humberside County Architect's Department",Medieval,Kiln,The material from these three tile kilns were combined to produce one date,AJC-20,Ancient Monuments Laboratory,59.3,13.6,2.1,1220,1260,Clark et al. (1988),TRUE,FALSE,"The results of three kilns were combined to produce the date: Kilns 7, 8 and 57. The results also represent the NRM values only.","A.J. Clark (1988) Archaeomagnetic dating: Grovehill, Beverley Medieval tile kilns. Ancient Monuments Laboratory (English Heritage) unpublished report 202/88"
"Tintagel Castle, Lower Ward",Cornwall,SX,048,891,Cornwall Archaeological Trust (now the Historic Environment Service),Early Medieval,Hearth,"The third hearth in a sequence of five, built on top of one another.  The hearth was constructed of clay.",AJC-34,Ancient Monuments Laboratory,60.1,8.5,2.5,450,500,Clark et al. (1988),TRUE,FALSE,,"A.J. Clark (1988) Archaeomagnetic dating: Tintagel Castle, Lower Ward. Stone and clay hearths. Ancient Monuments Laboratory (English Heritage) unpublished report 205/88"
Morton Fen,Lincolnshire,TF,164,232,Heritage Lincolnshire,Roman Britain,Kiln,Burnt clay surface thought to be the remains of a pottery kiln dating to the Roman period. The surface of the context was not cracked and there were no signs of disturbance,MOR,Ancient Monuments Laboratory,63.7,0.7,2.2,see notes,see notes,Clark et al. (1988),TRUE,FALSE,Two possible age ranges were produced at 68% confidence: AD125-190 OR AD295-375. Both age ranges are equally likely to be where the true age lies. Further dating evidence is required to determine the archaeologically significant age range,"P. Linford (1995) Archaeomagnetic dating report 1995: Morton Fen, Bourne, Lincolnshire. Ancient Monuments Laboratory (English Heritage), unpublished report 04/95"
Charter Quay,Greater London,TQ,178,691,,Medieval,Hearth,Hearth,CL-223/1,The Clark Laboratory,59.3,0.1,2.3,1375,1400,Clark et al. (1988),TRUE,FALSE,Demagnetisation did not result in an improvement of the overall results. Therefore the date range recorded in the database relates to the NRM values only,W.A. McCann (1998) The archaeomagnetic dating of two 14th-15th century hearths. The Clark Laboratory/MoLAS unpublished report 9/12/98
Charter Quay,Greater London,TQ,178,691,,Medieval,Hearth,Hearth,CL-23/2,The Clark Laboratory,59.8,3.0,3.2,1390,1410,Clark et al. (1988),TRUE,FALSE,Demagnetisation did not improve the overall results. The results in the database therefore relate to the NRM values. The date should be treated with caution as it was based on less than 8 specimens,W.A. McCann (1998) The archaeomagnetic dating of two 14th-15th century hearths. The Clark Laboratory/MoLAS unpublished report 9/12/98
Greyfriars,Norfolk,TG,230,080,,Medieval,Area of burning,"Bell pit of possible Medieval date. A red clay tile floor was recorded at the base of the pit, associated with a brown area surrounding this floor",NGF,GeoQuest Associates,57.8,2.5,2.6,see notes,see notes,Clark et al. (1988),FALSE,FALSE,The magnetic vector did not overlap with the calibration curve. Two tentative age ranges were produced when the vector was extrapolated onto the curve: AD1010-1095 or AD1490-1525,"M. Noel (1996) Archaeomagnetic analysis of samples from a bell pit at Greyfriars, Norwich. GeoQuest Associates, unpublished report No.63"
Heybridge,Essex,TL,844,090,Essex County Council Field Archaeology Unit,Roman Britain,Kiln,Roman pottery kiln HB1,Kiln HB1,GeoQuest Associates,63.9,0.3,1.3,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The magnetic vector did not overlap with the calibration curve. A tentative date of AD140-170 was produced when the vector was extrapolated onto the curve,"M. Noel (1996) Archaeomagnetic analysis of two kilns at Heybridge, Maldon, Essex. GeoQuest Associates/English Heritage, unpublished report"
Heybridge,Essex,TL,844,090,Essex County Council Field Archaeology Unit,Roman Britain,Kiln,Roman pottery kiln HB2,Kiln HB2,GeoQuest Associates,63.5,354.6,6.6,90,210,Clark et al. (1988),FALSE,TRUE,The magnetic vector did not overlap with the calibration curve. A tentative date of AD90-210 was produced when the vector was extrapolated onto the calibration curve,"M. Noel (1996) Archaeomagnetic analysis of two kilns at Heybridge, Maldon, Essex. GeoQuest Associates/English Heritage, unpublished report"
Windsor Castle Round Tower,Berkshire,SU,960,770,Central Excavation Unit,Medieval,Hearth,A pitched tile and plaster hearth: red tiles sampled,WIN (red),GeoQuest Associates,64.5,358.2,4.5,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The magnetic vectors may have been distorted during firing - Inc values were assumed to be correct. Tentative age ranges of AD1025-1175 or AD1455-1520 were produced when the vector was extrapolated onto the calibration curve,"M. Noel (1997) Archaeomagnetic analysis of 5 contexts in 2 hearths from Windsor Castle Round Tower. GeoQuest Associates/English Heritage, unpublished report"
Windsor Castle Round Tower,Berkshire,SU,960,770,Central Excavation Unit,Medieval,Hearth,pitched tile and plaster hearth: grey tiles,WIN (grey),GeoQuest Associates,62.3,341.1,5.4,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The vectors may have been distorted during firing. Inc values assumed to be correct. Tentative dates of AD1075-1220 or AD1430-1500 were produced when the vector was extrapolated onto the calibration curve,"M. Noel (1997) Archaeomagnetic analysis of 5 contexts in 2 hearths from Windsor Castle Round Tower. GeoQuest Associates/English Heritage, unpublished report"
Thurvaston,Derbyshire,SK,240,370,Trent and Peak Archaeology,Medieval,Hearth,"Several random blocks of fired stone set in a matrix of soft red clay containing flecks of charcoal, approximately 1m in diameter. The feature was located within a possible 13th-14th century dwelling",THU MAR,GeoQuest Associates,65.0,11.9,6.9,see notes,see notes,Clark et al. (1988),FALSE,TRUE,Two possible age ranges: AD1100-1210 or AD1450-1530. The alpha-95 and k-values indicate that the date should be used with caution,"M. Noel (1996) Archaeomagnetic analysis of burnt context 0045 at Thurvaston, Derbyshire. GeoQuest Associates/English Heritage, unpublished report"
Hagg End,North Yorkshire,SE,568,926,"Division of Archaeological, Environmental and Geographical Sciences",Medieval,Furnace,Furnace lining material and heat affected clay,HE03/AM105,"Archaeomagnetic Research Group, University of Bradford",61.74,7.23,3.88,1160,1320,Clark et al. (1988),FALSE,FALSE,"Three possible calibrated age ranges: AD200-400, AD1160-1320, or AD1380-1470. The age range AD1160-1320 was thought to be more likely based on the archaeological evidence. The date should be treated with caution as it was based on less than 8 specimens","A.J. Powell (2003) Archaeomagnetic dating of furnaces and other features excavated at Hagg End and Ewecote, Bilsdale, North Yorkshire. Archaeomagnetic Research Group, University of Bradford, unpublished report BR03-AM105-108"
Hagg End,North Yorkshire,SE,568,926,"Division of Archaeological, Environmental and Geographical Sciences",Medieval,Area of burning,Heat affected clay,HE03/AM106,"Archaeomagnetic Research Group, University of Bradford",52.42,16.78,34.33,see notes,see notes,Clark et al. (1988),FALSE,TRUE,"No date was produced due to the extremely large alphs-95 value, being well above the critical value of 5 degrees used in archaeomagnetic dating","A.J. Powell (2003) Archaeomagnetic dating of furnaces and other features excavated at Hagg End and Ewecote, Bilsdale, North Yorkshire. Archaeomagnetic Research Group, University of Bradford, unpublished report BR03-AM105-108"
Ewecote,North Yorkshire,SE,564,920,"Division of Archaeological, Geographical and Environmental Science",Medieval,Furnace,Vitrified lining material and heat affected clay from a furnace,EC03/AM107,"Archaeomagnetic Research Group, University of Bradford",59.27,2.81,6.33,1160,1460,Clark et al. (1988),FALSE,TRUE,Two possible age ranges produced: AD160-400 or AD1160-1460. The latter was thought to be the most likely date based on the archaeological evidence. The date should be treated with caution as it was based on less than 8 specimens,"A.J. Powell (2003) Archaeomagnetic dating of furnaces and other features excavated at Hagg End and Ewecote, Bilsdale, North Yorkshire. Archaeomagnetic Research Group, University of Bradford, unpublished report BR03-AM105-108"
Ewecote,North Yorkshire,SE,564,920,"Division of Archaeological, Geographical and Environmental Science",Medieval,Furnace,Furnace lining and heat affected clay from the furnace recorded in Trench 2,EC03/AM108,"Archaeomagnetic Research Group, University of Bradford",58.77,1.39,4.5,1250,1430,Clark et al. (1988),FALSE,TRUE,Two possible age ranges were produced: AD200-280 or AD1250-1430. The latter date was thought to be most likely date based on the archaeological evidence,"A.J. Powell (2003) Archaeomagnetic dating of furnaces and other features excavated at Hagg End and Ewecote, Bilsdale, North Yorkshire. Archaeomagnetic Research Group, University of Bradford, unpublished report BR03-AM105-108"
"Myers Wood, Kirkburton",West Yorkshire,SE,186,125,Huddersfield & District Archaeological Society/University of Bradford,Medieval,Area of burning,Ore roasting area,Trench A/AM109,"Archaeomagnetic Research Group, University of Bradford",63.3,1.15,3.33,1260,1330,Clark et al. (1988),FALSE,TRUE,"Several possible age ranges produced: AD 130-230, AD260-460, AD1260-1330, or AD1410-1490. The age range AD1260-1330 was selected as the most likely date based on the archaeological evidence","A.J. Powell (2003) Archaeomagnetic dating of the iron working site at Myers Wood, Huddersfield Archaeomagnetic Research Group, University of Bradford, unpublished report BR03-AM109-120"
"Myers Wood, Kirkburton",West Yorkshire,SE,186,125,Huddersfield & District Archaeological Society/University of Bradford,Medieval,Furnace,Tapping channel,Trench B/AM110,"Archaeomagnetic Research Group, University of Bradford",61.29,8.95,3.35,1150,1300,Clark et al. (1988),FALSE,TRUE,Several possible age ranges produced: AD1150-1300 or AD1400-1460. The earlier age range was thought to be the most likely date based on the archaeological evidence. The date should be treated with caution as it was based on less than 8 specimens,"A.J. Powell (2003) Archaeomagnetic dating of the iron working site at Myers Wood, Huddersfield Archaeomagnetic Research Group, University of Bradford, unpublished report BR03-AM109-120"
"Myers Wood, Kirkburton",West Yorkshire,SE,186,125,Huddersfield & District Archaeological Society/University of Bradford,Medieval,Furnace,Furnace baked clay material,Trench B/AM111,"Archaeomagnetic Research Group, University of Bradford",63.22,4.23,8.52,1160,1340,Clark et al. (1988),FALSE,TRUE,"Several possible age ranges: AD100-230, AD260-510, AD1160-1340, AD1390-1520. The AD1160-1340 was though to be the most likely date based on the archaeological evidence. The date should be treated with caution as it was based on less than 8 specimens","A.J. Powell (2003) Archaeomagnetic dating of the iron working site at Myers Wood, Huddersfield Archaeomagnetic Research Group, University of Bradford, unpublished report BR03-AM109-120"
"Myers Wood, Kirkburton",West Yorkshire,SE,186,125,Huddersfield & District Archaeological Society/University of Bradford,Medieval,Furnace,tapping channel and associated furnace,Trench B: AM110-111,"Archaeomagnetic Research Group, University of Bradford",58.43,7.11,2.96,1230,1280,Clark et al. (1988),FALSE,TRUE,Two possible age ranges: AD1230-1280 or AD1400-1425. The earlier range was thought to be more likely date based on the archaeological evidence,"A.J. Powell (2003) Archaeomagnetic dating of the iron working site at Myers Wood, Huddersfield Archaeomagnetic Research Group, University of Bradford, unpublished report BR03-AM109-120"
"Myers Wood, Kirkburton",West Yorkshire,SE,186,125,Huddersfield & District Archaeological Society/University of Bradford,Medieval,Furnace,Furnace lining material,Trench B: AM113,"Archaeomagnetic Research Group, University of Bradford",59.43,10.57,16.83,,,,FALSE,FALSE,"The magnetic vector was poorly defined with an alpha-95 value that exceeded the critical value used for archaeomagnetic dating. Therefore, no calibrated age ranges were produced","A.J. Powell (2003) Archaeomagnetic dating of the iron working site at Myers Wood, Huddersfield Archaeomagnetic Research Group, University of Bradford, unpublished report BR03-AM109-120"
"Myers Wood, Kirkburton",West Yorkshire,SE,186,125,Huddersfield & District Archaeological Society/University of Bradford,Medieval,Furnace,Furnace,Trench B: AM114,"Archaeomagnetic Research Group, University of Bradford",64.55,12.89,4.1,1090,1220,Clark et al. (1988),FALSE,TRUE,"3 possible age ranges were produced: AD1410-1520, AD1270-1290 or AD1090-1220. The earliest age range was thought to be the more likely date based on the archaeological evidence, but should be treated with caution as it was based on less that 8 specimens","A.J. Powell (2003) Archaeomagnetic dating of the iron working site at Myers Wood, Huddersfield Archaeomagnetic Research Group, University of Bradford, unpublished report BR03-AM109-120"
"Myers Wood, Kirkburton",West Yorkshire,SE,186,125,Huddersfield & District Archaeological Society/University of Bradford,Medieval,Area of burning,,Trench C: AM115,"Archaeomagnetic Research Group, University of Bradford",63.22,10.68,2.52,1140,1220,Clark et al. (1988),FALSE,TRUE,Two possible age ranges were produced: AD1440-1470 or AD1140-1220. The earlier age range was thought to be more likely based on the archaeological evidence,"A.J. Powell (2003) Archaeomagnetic dating of the iron working site at Myers Wood, Huddersfield Archaeomagnetic Research Group, University of Bradford, unpublished report BR03-AM109-120"
"Myers Wood, Kirkburton",West Yorkshire,SE,186,125,Huddersfield & District Archaeological Society/University of Bradford,Medieval,Area of burning,Slag dump,Trench C: AM116,"Archaeomagnetic Research Group, University of Bradford",52.3,28.8,16.0,see notes,see notes,,FALSE,FALSE,"The alpha-95 value greatly exceeded the critical value used in archaeomagnetic dating, and therefore a date was not produced.","A.J. Powell (2003) Archaeomagnetic dating of the iron working site at Myers Wood, Huddersfield Archaeomagnetic Research Group, University of Bradford, unpublished report BR03-AM109-120"
"Myers Wood, Kirkburton",West Yorkshire,SE,186,125,Huddersfield & District Archaeological Society/University of Bradford,Medieval,Area of burning,Slag dump,Trench C: AM117,"Archaeomagnetic Research Group, University of Bradford",41.4,28.4,18.3,see notes,see notes,,FALSE,FALSE,"The alpha-95 value greatly exceeded the critical value used in archaeomagnetic dating, and therefore a date was not produced","A.J. Powell (2003) Archaeomagnetic dating of the iron working site at Myers Wood, Huddersfield Archaeomagnetic Research Group, University of Bradford, unpublished report BR03-AM109-120"
"Myers Wood, Kirkburton",West Yorkshire,SE,186,125,Huddersfield & District Archaeological Society/University of Bradford,Medieval,Furnace,Furnace,Trench G: AM118,"Archaeomagnetic Research Group, University of Bradford",61.3,359.0,5.2,1250,1360,Clark et al. (1988),FALSE,TRUE,"Three possible age ranges were produced: AD1375-1490, AD1250-1360, or AD140-480. The AD1250-1360 age range was thought to be the more likely date based on the archaeological evidence","A.J. Powell (2003) Archaeomagnetic dating of the iron working site at Myers Wood, Huddersfield Archaeomagnetic Research Group, University of Bradford, unpublished report BR03-AM109-120"
"Myers Wood, Kirkburton",West Yorkshire,SE,186,125,Huddersfield & District Archaeological Society/University of Bradford,Medieval,Hearth,A possible hearth/furnace,Trench L: AM119,"Archaeomagnetic Research Group, University of Bradford",65.3,20.2,2.81,1040,1170,Clark et al. (1988),FALSE,TRUE,The date should be treated with caution as it was based on less that 8 specimens,"A.J. Powell (2003) Archaeomagnetic dating of the iron working site at Myers Wood, Huddersfield Archaeomagnetic Research Group, University of Bradford, unpublished report BR03-AM109-120"
"Myers Wood, Kirkburton",West Yorkshire,SE,186,125,Huddersfield & District Archaeological Society/University of Bradford,Medieval,Hearth,smithy hearth,Trench M: AM120,"Archaeomagnetic Research Group, University of Bradford",82.2,13.4,16.8,see notes,see notes,,FALSE,FALSE,The alpha-95 value greatly exceeded the critical value used in archaeomagnetic dating and therefore a date was not produced,"A.J. Powell (2003) Archaeomagnetic dating of the iron working site at Myers Wood, Huddersfield Archaeomagnetic Research Group, University of Bradford, unpublished report BR03-AM109-120"
Mine Howe,Orkney Islands,HY,510,060,Orkney Archaeological Trust,British Iron Age,Hearth,Soft red clay associated with the central hearth within the round structure,MH2/AM,"Archaeomagnetic Research Group, University of Bradford",73.7,351.7,5.2,-100,100,Clark et al. (1988),FALSE,TRUE,"Two potential calibrated age ranges were produced: 100BC-AD100 or AD1950-present. The earlier age range was selected based on the archaeological evidence, as well as the supporting radiocarbon dates.","Z. Outram & C.M. Batt (2004) Archaeomagnetic dating of the features from excavations at Mine Howe, Tankerness, Orkney. Archaeomagnetic Research Group, University of Bradford. Unpublished report BR04-AM77-78"
Quoygrew,Orkney Islands,HY,443,507,University of York,Medieval,Hearth,Layer of soft pale orange ash within the central hearth of a Late Norse longhouse.,Q3/AM,"Archaeomagnetic Research Group, University of Bradford",70.4,7.1,1.9,1460,1505,Clark et al. (1988),FALSE,TRUE,Two possible age ranges produced: AD1460-1505 or 480-420BC. Neither of these age ranges fit with the expected age of the site based on the archaeological evidence.,"Z. Outram & C.M. Batt (2004) Archaeomagnetic dating of the features from the excavations at Quoygrew, Westray, Orkney. Archaeomagnetic Research Group, University of Bradford. Unpublished report BR04-AM66-68"
Quoygrew,Orkney Islands,HY,443,507,University of York,Medieval,Hearth,Pale orange ash layer representing the basal deposits of a series of hearths within the centre of the Late Norse longhouse,Q1/AM,"Archaeomagnetic Research Group, University of Bradford",64.9,0.3,3.3,1450,1475,Clark et al. (1988),FALSE,TRUE,"Three possible age ranges were produced: AD1450-1475, AD280-460 or AD50-200. None of these age ranges agreed with the expected age of the site based on the archaeological evidence.","Z. Outram & C.M. Batt (2004) Archaeomagnetic dating of the features from the excavations at Quoygrew, Westray, Orkney. Archaeomagnetic Research Group, University of Bradford. Unpublished report BR04-AM66-68"
Stingamires,North Yorkshire,SE,564,959,Ancient Metallurgy Research Group,Medieval,Area of burning,Heat affected clay surface associated with the ore roasting area,SM04 AM121,"Archaeomagnetic Research Group, University of Bradford",57.0,-3.9,2.6,1340,1390,Clark et al. (1988),FALSE,TRUE,,"A.J. Powell (2004) Archaeomagnetic dating of iron smelting features excavated at Stingamires Bilsdale, North Yorkshire. Archaeomagnetic Research Group, University of Bradford, unpublished report BR04-AM121&122"
Stingamires,North Yorkshire,SE,564,959,Ancient Metallurgy Research Group,Medieval,Furnace,Furnace lining and heat affected clay associated with an iron smelting bloomery,SM04 AM122,"Archaeomagnetic Research Group, University of Bradford",63.3,11.3,3.8,1140,1300,Clark et al. (1988),FALSE,TRUE,Two possible age ranges were produced: AD1420-1480 or AD1140-1300. The earlier age range was thought to be the most likely date based on the archaeological evidence,"A.J. Powell (2004) Archaeomagnetic dating of iron smelting features excavated at Stingamires Bilsdale, North Yorkshire. Archaeomagnetic Research Group, University of Bradford, unpublished report BR04-AM121&122"
Beeston Castle,Cheshire,SJ,537,593,,Iron Age,Area of burning,Four blocks of burnt sandstone in the Iron Age rampart were oriented for archaeomagnetic dating,AML-873704-5,Ancient Monuments Laboratory,72.1,9.6,2.0,-400,-200,Clark et al. (1988),FALSE,TRUE,,"A.J. Clark (1993) Archaeomagnetic dating. In P. Ellis (ed.) Beestone Castle, Cheshire: a report on the excavations 1968-1985 by Laurence Keen and Peter Hough. Historic Buildings & Monuments Commission for England: London, p85"
Chichester Cattle Market,West Sussex,SU,860,040,Chichester District Archaeological Unit,Roman Britain,Hearth,"Three clay hearths, walls and floors A17, B1 and B2","A17, B1 and B2",,62.9,2.9,1.3,,,,FALSE,FALSE,A calibrated date was not provided,A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Garden Hill,East Sussex,TQ,440,310,,Iron Age/Roman,Hearth,"Forging hearth, clay walls and floor",AML-860048,Ancient Monuments Laboratory,54.5,3.7,4.1,,,,FALSE,FALSE,"Date assigned to the feature ""probably dates to the 3rd century AD""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Garden Hill,East Sussex,TQ,440,310,,Iron Age/Roman,Hearth,"Hearth, clay walls and floor",AML-860049,Ancient Monuments Laboratory,63.4,350.6,5.3,,,,FALSE,FALSE,A calibrated date was not provided,A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Garden Hill,East Sussex,TQ,440,310,,Iron Age/Roman,Hearth,"Hearth, clay walls and floor",AML-860050,Ancient Monuments Laboratory,64.4,347.5,3.3,,,,FALSE,FALSE,A calibrated date was not provided,A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Garden Hill,East Sussex,TQ,440,310,,Iron Age/Roman,Furnace,"Iron smelting furnace and secondary hearth, clay walls and floor",AML-860052,Ancient Monuments Laboratory,62.1,358.3,3.5,,,,FALSE,FALSE,"A radiocarbon date was produced: 90 cal BC-cal AD 110. The sample reference was not provided, and it is not clear if the date range was quoted at 68% or 95% confidence",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Garden Hill,East Sussex,TQ,440,310,,Iron Age/Roman,Area of burning,Burnt clay soil beneath the rampart,AML-860056,Ancient Monuments Laboratory,69.4,2.7,4.1,,,,FALSE,FALSE,"The archaeological date for this feature: ""probably 400-50BC""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Garden Hill,East Sussex,TQ,440,310,,Iron Age/Roman,Hearth,Roman iron forcing hearth,GAR346,,68.8,346.4,3.3,,,,FALSE,FALSE,Roman iron forcing hearth (50BC),Ancient Monuments Laboratory Report
Garden Hill,East Sussex,TQ,440,310,,Iron Age/Roman,Hearth,Hearth,GAR490,,57.2,8.9,1.8,,,,FALSE,FALSE,A calibrated age range was not provided,Ancient Monuments Laboratory Report
Garden Hill,East Sussex,TQ,440,310,,Iron Age/Roman,Hearth,Hearth on Rampart of Iron Age phase,GAR436,,69.4,2.7,4.1,,,,FALSE,FALSE,A calibrated age range was not provided,Ancient Monuments Laboratory Report
Garden Hill,East Sussex,TQ,440,310,,Iron Age/Roman,Furnace,Iron smelting furnace,GAR067,,61.8,356.1,7.0,,,,FALSE,FALSE,"Date assigned to the feature ""Roman"". The alpha-95 value exceeded the critical value of 5° used in dating","A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Garden Hill,East Sussex,TQ,440,310,,Iron Age/Roman,Furnace,Iron smelting furnace,GAR433,,64.1,353.0,9.1,,,,FALSE,FALSE,"Date assigned to the feature ""Roman"". The alpha-95 value exceeded the critical value of 5° used in dating","A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Park Lane,Cambridgeshire,TL,240,760,,Roman Britain,Kiln,Pottery kiln clay floor,AML-850027,Ancient Monuments Laboratory,57.2,1.5,1.7,,,,FALSE,FALSE,"Date of the feature: ""first half of the 3rd century AD""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Little Cansiron Farm,East Sussex,TQ,450,380,Wealden Iron Research Group,Roman Britain,Kiln,"Tile kiln, clay oven floor",AML-841226,Ancient Monuments Laboratory,63.4,0.9,1.6,,,,FALSE,FALSE,"Date assigned to the feature ""Roman, about AD120""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Pippingford,East Sussex,TQ,451,309,,Roman Britain,Hearth,"two hearths, clay floors",PIP/2,,64.7,0.8,4.1,,,,FALSE,FALSE,"Date assigned to the feature: ""Roman, probably 1st century AD""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Pippingford,East Sussex,TQ,451,309,,Roman Britain,Hearth,hearth floor,PIP/1,,62.5,7.5,5.3,,,,FALSE,FALSE,A calibrated age range was not provided,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Potterne,Wiltshire,ST,995,590,,Bronze Age,Hearth,"two hearths, clay floor",AML-873706,Ancient Monuments Laboratory,70.2,42.9,2.7,,,,FALSE,FALSE,"Date assigned to the feature ""shortly before 800 cal BC (C14)""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Sapcote,Leicestershire,SP,490,930,,Roman Britain,Kiln,"Kilns or furnaces, as well as the burnt natural soil sides were sampled for archaeomagnetic dating",SAP1,,67.6,359.0,3.5,,,,FALSE,FALSE,"Date assigned to this feature ""Roman""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Sapcote,Leicestershire,SP,490,930,,Roman Britain,Kiln,"kilns or furnace, and the burnt natural soil sides were sampled for archaeomagnetic dating",SAP2,,68.7,359.6,4.2,,,,FALSE,FALSE,"Date assigned to the feature ""Roman""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Maddison Street (SOU29),Hampshire,SU,410,110,Southampton City Museum,Iron Age,Area of burning,fired clay layer at the base of a pit,,,68.9,5.7,1.8,,,,FALSE,FALSE,"Date assigned to the feature ""Iron Age"", but less than 8 specimens were used in the final assessment of the magnetic vector",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Walton-le-Dale,Lancashire,SD,349,245,Lancaster University Archaeology Unit (now Oxford North),Roman Britain,Hearth,"Two hearths, clay floor",AML-873709,Ancient Monuments Laboratory,62.7,359.1,2.3,,,,FALSE,FALSE,"Date assigned to the feature ""Roman""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Wareham,Dorset,SY,913,869,Trust for Wessex Archaeology (now Wessex Archaeology),Roman Britain,Kiln,"Pottery kiln, clay floor",,,58.8,359.4,2.6,,,,FALSE,FALSE,"Date assigned to the feature ""Roman, possibly 2nd century AD""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Barking Abbey,Greater London,TQ,430,830,Passmore Edwards Museum,Early Medieval,Hearth,"Hearth floor, natural brick earth",C3687,,68.4,18.7,2.1,,,,FALSE,FALSE,"Date assigned to the feature ""probably Saxon""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
"Barnstaple, Library Site",Devon,SS,565,321,,Medieval,Kiln,Kiln walls and pedestal,AJC-1,,59.7,7.2,2.8,,,,FALSE,FALSE,"Date assigned to the feature ""Medieval""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Barton upon Humber,Lincolnshire,TA,035,219,,Early Medieval,Hearth,Hearth floor,BAR,,63.8,21.3,1.2,,,,FALSE,FALSE,"Date assigned to this feature ""Early Medieval"", but less that 8 specimens were used in the final assessment of the magnetic vector",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Bigberry,Kent,TR,110,570,,Iron Age,Silt,silt from water hole,CG/S,,71.8,2.0,2.1,,,,FALSE,FALSE,"Date assigned to the feature ""early 1st century BC""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Hascombe Hillfort,Surrey,TQ,005,386,Surrey Archaeological Society/Societies of Antiquaries London,Iron Age,Area of burning,Burnt natural Greensand rock,Hascombe Pit 1,,65.3,351.4,3.4,-70,-1,Aitken 1970,FALSE,FALSE,"Archaeological date assigned to the feature: ""60-50BC"".",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Hascombe Hillfort,Surrey,TQ,005,386,Surrey Archaeological Society/Societies of Antiquaries London,Iron Age,Silt,Ditch primary silt,Hascombe Trench 77/7,,66.1,352.1,5.8,,,,FALSE,FALSE,"Archaeological date assigned to the feature: ""100-50BC""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Holmbury,Surrey,TQ,104,430,,Iron Age,Silt,Primary silt in the ditch,,,64.8,350.4,3.0,,,,FALSE,FALSE,"Date assigned to the feature ""100-50BC"", but less that 8 specimens were used in the final assessment of the magnetic vector",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Castell Henllys,Pembrokeshire,SN,110,390,,Iron Age/Roman,Hearth,Hearth defined by on-edge flat stones that showed clear evidence of being heated,CH1 Hearth,"Plymouth Environmental Research Centre, University of Plymouth",67.9,353.1,13.9,see notes,see notes,,FALSE,FALSE,The alpha-95 value greatly exceeded the critical value used for archaeomagnetic dating and therefore a date was not produced,"D.H. Tarling (1994) Archaeomagnetic results from Castell Henllys, Pembrokeshire. Department of Geological Sciences, Plymouth University, unpublished report"
Little Bay,Cornwall,SV,920,160,Central Excavation Unit,Iron Age,Silt,sandy soil from above a probable Iron Age layers,,,66.2,353.4,3.1,,,,FALSE,FALSE,"Clark et al. 1988 ""probably Iron Age"", but the site is described as Bronze Age on the ADS website (record ID NMRMIC-900)",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Spong Hill,Norfolk,TF,982,196,Norfolk Archaeological Unit,Roman Britain,Kiln,"Pottery kiln, clay from the North and East walls",,,64.4,358.7,3.4,,,,FALSE,FALSE,"Date assigned to this feature ""probably early Roman""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Dyers Walk,"East Riding, Yorkshire",TA,033,397,Humberside Archaeological Unit,Medieval,Hearth,Two pitched tile hearths combined,C328 & C461,,60.6,13.2,2.6,,,,FALSE,FALSE,"Date assigned to the feature ""Medieval""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Castell Henllys,Pembrokeshire,SN,110,390,,Iron Age/Roman,Hearth,A formal hearth was recorded (sample CH1 (hearth)) with a small patch of reddened material directly to the north of the feature. The patch of ash was sampled,CH1 (ash),"Plymouth Environmental Research Centre, University of Plymouth",68.9,352.8,26.2,see notes,see notes,,FALSE,FALSE,The alpha-5 value greatly exceeded the critical value used on archaeomagnetic dating and therefore a date was not produced,"D.H. Tarling (1994) Archaeomagnetic results from Castell Henllys, Pembrokeshire. Department of Geological Sciences, Plymouth University, unpublished report"
Castell Henllys,Pembrokeshire,SN,110,390,,Iron Age/Roman,Hearth,"Burnt ashes attributed to a probable Roman Age hearth, approximately 20 X 20cm",CH2,"Plymouth Environmental Research Centre, University of Plymouth",60.3,355.3,2.8,200,230,Clark et al. (1988),FALSE,TRUE,"Two possible age ranges were produced: AD1310-1340 or AD200-230. The earlier age range was thought to be more likely based on the archaeological evidence, but it should be treated with caution as it was based on 5 specimens from the feature","D.H. Tarling (1994) Archaeomagnetic results from Castell Henllys, Pembrokeshire. Department of Geological Sciences, Plymouth University, unpublished report"
Castell Henllys,Pembrokeshire,SN,110,390,,Iron Age/Roman,Area of burning,Loose burnt clay and ash attributed to burning activity,CH3,"Plymouth Environmental Research Centre, University of Plymouth",61.0,0.4,6.6,100,460,Clark et al. (1988),FALSE,TRUE,"Several possible age ranges were produced: AD1250-1490, AD1170-1200 or AD100-460 The archaeological evidence supported the earliest range. The date should be treated with caution as it was based on less than 8 specimens","D.H. Tarling (1994) Archaeomagnetic results from Castell Henllys, Pembrokeshire. Department of Geological Sciences, Plymouth University, unpublished report"
Castell Henllys,Pembrokeshire,SN,110,390,,Iron Age/Roman,Hearth,"compacted area of red burnt ash lying on a flat stone, thought to be part of an Iron Age, possibly pre-Roman feature",CH4,"Plymouth Environmental Research Centre, University of Plymouth",69.2,7.2,11.5,see notes,see notes,,FALSE,FALSE,The alpha-95 value greatly exceeded the critical value used in archaeomagnetic dating and therefore a date was note produced,"D.H. Tarling (1994) Archaeomagnetic results from Castell Henllys, Pembrokeshire. Department of Geological Sciences, Plymouth University, unpublished report"
Bigberry,Kent,TR,110,570,,Iron Age,Hearth,Burnt clay from hearth,BIG/H,,66.4,5.7,9.1,,,,FALSE,FALSE,A calibrated age range was not provided and the alpha-95 value exceeded the critical value of 5° used in dating,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Bryn Y Castell,Flintshire,SH,728,429,,Iron Age/Roman,Hearth,Hearth walls,Hearth D (F41),,64.5,0.2,1.7,,,,FALSE,FALSE,"Late Iron Age and Roman, but less that 8 specimens were used in the final assessment of the magnetic vector","N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Bryn Y Castell,Flintshire,SH,728,429,,Iron Age/Roman,Hearth,Hearth walls,Hearth A (F37),,60.8,2.3,3.6,,,,FALSE,FALSE,"Late Iron Age and Roman, but less than 8 specimens were used in the final assessment of the magnetic vector",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Bryn Y Castell,Flintshire,SH,728,429,,Iron Age/Roman,Hearth,Hearth walls,Hearth A (F49),,61.6,359.0,5.2,,,,FALSE,FALSE,"Late Iron Age and Roman, but less than 8 specimens were used in the final assessment of the mean",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Holmbury,Surrey,TQ,104,430,,Iron Age,Silt,Primary silt in the ditch,,,66.1,0.4,3.1,,,,FALSE,FALSE,"Date assigned to the feature ""probably AD1-43"", but less that 8 specimens were used in the final assessment of the magnetic vector",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Maiden Castle,Dorset,SY,669,885,,Iron Age/Roman,Hearth,flat clay hearth in Phase 6F,AML-8650298,Ancient Monuments Laboratory,68.8,359.9,0.7,,,,FALSE,FALSE,"Date assigned to the feature ""2nd century BC""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Maiden Castle,Dorset,SY,669,885,,Iron Age/Roman,Hearth,Flat clay hearth in trench VI,AML-8650299,Ancient Monuments Laboratory,63.4,0.7,1.5,,,,FALSE,FALSE,"Date assigned to the feature ""probably 1st century AD""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Mucking,Essex,TQ,674,806,Central Excavation Unit,Iron Age,Hearth,"Sea-salt drying hearths, clay walls",MUC1,,68.0,31.0,5.1,,,,FALSE,FALSE,"Date assigned to the feature ""before 600BC""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Mucking,Essex,TQ,674,806,Central Excavation Unit,Iron Age,Silt,silt from a pre-Roman ditch,MUC/2,,64.9,2.0,2.0,,,,FALSE,FALSE,"Date assigned to the feature ""pre-Roman""","A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Spong Hill,Norfolk,TF,982,196,Norfolk Archaeological Unit,Roman Britain,Kiln,burnt clay from a pillar in a kiln,SPO,,66.2,1.2,2.3,,,,FALSE,FALSE,A calibrated age range was not provided,"N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Carrickfergus,County Antrim,NW,541,428,,Medieval,Kiln,"Kiln walls, clay",CAR,,59.9,16.4,3.9,,,,FALSE,FALSE,"Date assigned to the feature ""AD1200-1250""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Chapel Street,West Sussex,SU,861,032,Chichester Excavation Committee,Early Medieval,Kiln,Saxon pot firing clamp kiln,CH1,,65.2,34.2,1.0,,,,FALSE,FALSE,"Date assigned to the feature ""Late Saxon""","A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Jesus House,East Sussex,TV,598,994,,Medieval,Kiln,Lime kiln,EAS,,61.6,16.1,1.8,,,,FALSE,FALSE,"Date assigned to the feature ""probably AD1160-1190""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Ship Lane,Hampshire,SU,870,560,North East Hampshire Archaeology Society,Medieval,Kiln,"Pottery kiln, pedestal top",SL,,53.0,0.6,1.4,,,,FALSE,FALSE,"Date assigned to the feature ""Medieval""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Borelli Yard,Surrey,SU,842,470,,Medieval,Kiln,"Tile kiln, brick arch springers",,,57.7,11.7,1.7,,,,FALSE,FALSE,"Date assigned to the feature ""12th-13th century AD"". Entry in Pastscape describes the tile kiln as a ""late 12th-early 13th century"" feature. The final assessment of the magnetic vector was based on less than 8 specimens",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Sandford Manor,Greater London,TQ,260,771,,Post-Medieval,Kiln,"Brick clamp base, natural brick earth",SAN,,70.5,2.0,2.1,,,,FALSE,FALSE,"Date assigned to the feature ""Early to mid-17th century AD""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Grove Priory,Bedfordshire,SP,923,227,Bedford County Council,Medieval,Hearth,Pitched tile hearth,C148,,55.8,6.0,2.3,,,,FALSE,FALSE,"Date assigned to the feature ""Medieval""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Westbury House,Surrey,SU,994,492,Guildford Museum,Medieval,Hearth,"Hearth, clay/lime floor",AML-840507,Ancient Monuments Laboratory,60.9,14.6,1.6,,,,FALSE,FALSE,"Date assigned to the feature ""Medieval""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Lower Parrock,East Sussex,TQ,456,357,"Institute of Archaeology, Sussex Archaeological Field Unit",Medieval,Kiln,clay floor of the pottery kiln,PARR,,63.8,14.0,3.4,,,,FALSE,FALSE,"Date assigned to the feature ""AD1520-1550""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Bishop's Manor,"East Riding, Yorkshire",SE,749,282,Humberside County Council,Medieval,Hearth,"Bowl hearth, clay walls in the NE room",,,61.1,0.8,1.7,,,,FALSE,FALSE,"Date assigned to the feature ""Medieval""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Kiln Combe,East Sussex,TV,573,764,,Medieval,Hearth,Flat clay/soil hearth,,,60.0,14.9,1.1,,,,FALSE,FALSE,"Date assigned to the feature ""1150-1200""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Kingston,Surrey,TQ,170,690,,Medieval,Kiln,Pottery kiln walls,AML-841227,Ancient Monuments Laboratory,54.0,353.8,3.3,,,,FALSE,FALSE,"Date assigned to the feature ""probably 14th century AD""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Kingston,Surrey,TQ,170,690,,Medieval,Silt,River silt beside a medieval bridge,KIN,,63.4,7.8,4.9,,,,FALSE,FALSE,"Date assigned to the feature ""Late Medieval""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Laugharne Castle,Carmarthenshire,SN,302,107,,Medieval/Post-Medieval,Oven,Oven: stone walls,AJC-5,,65.1,8.7,3.0,,,,FALSE,FALSE,"Date assigned to the feature ""probably Tudor"" - Tudor period = AD1485-1603. Information on the CADW website suggests that the building was transformed into a Tudor Mansion in the 16th century. The magnetic vector was based on less than 8 specimens",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Limpsfield,Surrey,TQ,424,525,,Medieval,Kiln,"Pottery kiln, sandstone walls and floor",LIM,,57.6,359.0,3.4,,,,FALSE,FALSE,"Date assigned to the feature ""1230-1366""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Little Woolstone Church,Buckinghamshire,SP,870,390,Milton Keynes Archaeology Unit,Medieval,Hearth,"Hearth, clay walls and floor",WOO,,57.3,12.0,3.9,,,,FALSE,FALSE,"Date assigned to the feature ""Probably Norman or earlier"" (Norman Britain AD1066-1154)",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Horn Tavern,Greater London,TQ,333,757,,Early Medieval,Hearth,Bowl hearth in brick earth,,,70.7,19.4,0.9,,,,FALSE,FALSE,"Date assigned to the feature ""probably 10th century AD""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Peninsula House,Greater London,TQ,320,800,City of London Archaeological Society,Early Medieval,Hearth,Hearth walls in brick earth,MON,,70.7,11.7,4.0,,,,FALSE,FALSE,"Date assigned to the feature ""probably 9th century""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Merton Priory,Greater London,TQ,265,699,,Medieval,Hearth,Pitched tile hearth,AML-840509,,56.9,13.7,1.8,,,,FALSE,FALSE,"Date assigned to the feature ""Medieval""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Bedford Street,Norfolk,TG,231,087,Norfolk Archaeology Unit,Early Medieval,Furnace,hard-baked clay lining on either side of the flue,NOR,The Clark Laboratory,70.1,29.4,2.3,960,1060,AML archaeomagnetic curve 1981,TRUE,FALSE,"Date assigned to the feature ""probably 11th century AD""","A.J. Clark (1983) Archaeo-magnetic dating of Saxon pottery kiln (Site 424N), Bedford Street, Norwich. In P. Martins-Wade (ed.) Waterfront excavation and Thetford ware production, Norwich. Norfolk Archaeological Unit: Dereham, p92 "
Oatlands Palace,Surrey,TQ,079,652,,Early Medieval/Medieval,Floor,Burnt brick foor of the detached tower,,,68.9,12.3,2.4,,,,FALSE,FALSE,"Date assigned to the feature ""probably Tudor (AD1485-1603)""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Okehampton Castle,Devon,SX,583,942,,Medieval,Hearth,"Hearth, clay floor",OKE,,56.6,12.1,4.3,,,,FALSE,FALSE,"Date assigned to the feature ""predates the 13th century AD hall"" (NB, Medieval period = AD1066-1540)",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Peel Castle,Isle of Man,SC,241,845,,Medieval,Hearth,"Hearth, sandy clay floor",AJC-44,,54.5,352.0,2.9,1340,1370,Clark et al. (1988),TRUE,FALSE,"Date assigned to the feature ""Medieval"". Freke (1986, Current Archaeology No.99, 105): ""underlying the later courtyard there was a 12th century Norse building with a hearth at one end, dated by archaeomagnetism to the middle of the 12th century""","A.J. Clark (2002) Archaeomagnetic assay. In D. Freke (ed.) Excavation on St Patrick's Isle Peel, Isle of Man, 1982-88. Prehistoric, Viking and later. Liverpool University Press: Liverpool, p.264"
Pennard Castle,Swansea,SS,613,798,,Medieval,Floor,Burnt red clay floor of building,,,55.6,11.2,3.4,,,,FALSE,FALSE,"Date assigned to the feature ""probably 13th century AD""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Radwinter,Essex,TL,590,380,Chelmsford Archaeological Trust,Medieval,Kiln,"Tile kiln, clay floor of firing chamber",RAD,,57.3,4.8,1.5,,,,FALSE,FALSE,"Date assigned to the feature ""about AD1420"". No information available about the number of specimens used.",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
St Oswald's Church,Lincolnshire,TF,107,791,,Medieval,Hearth,Hearth clay walls associated with metal working,RAN,,60.8,14.0,4.2,,,,FALSE,FALSE,"Date assigned to the feature ""Roman or Medieval""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Rush Green,Buckinghamshire,TQ,020,867,,Medieval,Kiln,"Pottery kiln, clay top of pedestal",AML-865446,,54.0,12.4,1.4,,,,FALSE,FALSE,"Date assigned to the feature ""Medieval""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Quilter's Vault,Hampshire,SU,418,109,Southampton City Council (Archaeology),Medieval,Kiln,"Lime kiln, clay walls",C95,,59.5,12.9,2.9,,,,FALSE,FALSE,"Date assigned to this feature ""AD1190-1200""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Quilter's Vault,Hampshire,SU,418,109,Southampton City Council (Archaeology),Medieval,Kiln,"Lime kiln, clay walls",C115 (east wall),,57.0,12.3,1.7,,,,FALSE,FALSE,"Date assigned to the feature ""AD1250-1260""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Quilter's Vault,Hampshire,SU,418,109,Southampton City Council (Archaeology),Medieval,Kiln,Lime kiln,QV1,,63.6,11.4,3.4,,,,FALSE,FALSE,A calibrated age range was not provided,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Winkle Street,Hampshire,SU,420,110,,Early Medieval/Medieval,Hearth,"Hearth, clay walls",,,54.2,0.0,2.8,,,,FALSE,FALSE,"Date assigned to the feature ""Saxon or Medieval""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Lurk Lane,"East Riding, Yorkshire",TA,038,392,Humberside Archaeology Unit,Medieval,Hearth,pitched roof tiles from the earliest hearth (hearth 1) of the series,AML-868167,Ancient Monuments Laboratory,59.0,5.5,1.8,see notes,see notes,Clark et al. (1988),TRUE,FALSE,"Feature tilted by c.3.5°, correction applied. The uncorrected values= Dec 0.1°, Inc 61.4°. A date of AD1270-1300 is tentatively suggested following the correction. Clark et al. (1988) stated the date was ""shortly before AD1280""","A.J. Clark (1991) Archaeomagnetic dating. In P. Armstrong et al. (eds.) Excavations at Lurk Lane Beverley, 1979-1982. Collis: Sheffield, p234-235"
Lurk Lane,"East Riding, Yorkshire",TA,038,392,Humberside Archaeology Unit,Medieval,Hearth,Pitched roof tiles from the second hearth in the series (Hearth 2),AML-868168,Ancient Monuments Laboratory,58.46,18.65,3.2,see notes,see notes,Clark et al. (1988),TRUE,FALSE,Results were anomalous but unsure why. Dates assigned to Hearths 1 (context 676) and Hearth 3 (context 585) suggest a 15yr gap between the two. This could be used to suggest a life of 7.5yrs for the first two hearths,"A.J. Clark (1991) Archaeomagnetic dating. In P. Armstrong et al. (eds.) Excavations at Lurk Lane Beverley, 1979-1982. Collis: Sheffield, p234-235"
Lurk Lane,"East Riding, Yorkshire",TA,038,392,Humberside Archaeology Unit,Medieval,Hearth,Pitched roof tiles from the third hearth (Hearth 3) in the series,AML-868169,Ancient Monuments Laboratory,59.5,2.0,1.9,1285,1315,Clark et al. (1988),TRUE,FALSE,"The archaeological date assigned to this feature ""AD1280-1300"" (Clark et al. 1988)","A.J. Clark (1991) Archaeomagnetic dating. In P. Armstrong et al. (eds.) Excavations at Lurk Lane Beverley, 1979-1982. Collis: Sheffield, p234-235"
Lurk Lane,"East Riding, Yorkshire",TA,038,392,Humberside Archaeology Unit,Medieval,Hearth,Pitched roof tiles from the fifth hearth (Hearth 5) in the series,AML-868171,Ancient Monuments Laboratory,57.8,2.2,3.0,1305,1345,Clark et al. (1988),TRUE,FALSE,Assessments suggest peripheral samples were insuffieciently heated,"A.J. Clark (1991) Archaeomagnetic dating. In P. Armstrong et al. (eds.) Excavations at Lurk Lane Beverley, 1979-1982. Collis: Sheffield, p234-235"
Lurk Lane,"East Riding, Yorkshire",TA,038,392,Humberside Archaeology Unit,Medieval,Hearth,Pitched roof tiles in the sixth hearth (Hearth 6) in the series,AML-868172,Ancient Monuments Laboratory,56.2,355.1,2.5,1325,1355,Clark et al. (1988),TRUE,FALSE,,A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Lurk Lane,"East Riding, Yorkshire",TA,038,392,Humberside Archaeology Unit,Medieval,Hearth,Hearth material,AML-868174,Ancient Monuments Laboratory,60.2,14.1,2.8,1180,1240,Clark et al. (1988),TRUE,FALSE,"Feature tilted by 2° in the central area. Uncorrected values: Dec 16.0°, Inc 61.9°. Uncorrected values return a calibrated age range in the late 12th century AD.","A.J. Clark (1991) Archaeomagnetic dating. In P. Armstrong et al. (eds.) Excavations at Lurk Lane Beverley, 1979-1982. Collis: Sheffield, p234-235"
Stamford Castle,Lincolnshire,TF,026,069,,Early Medieval/Medieval,Kiln,Pottery kiln clay floor,STAM1,,68.9,15.9,1.6,,,,FALSE,FALSE,"Date assigned to the feature ""probably 9th century AD""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Stamford Castle,Lincolnshire,TF,026,069,,Early Medieval/Medieval,Hearth,"Stone fireplace, back wall mortar",STAM3,,58.4,352.3,3.3,,,,FALSE,FALSE,"Date assigned to the feature ""disused by AD1300-1340""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Stamford Castle,Lincolnshire,TF,026,069,,Early Medieval/Medieval,Hearth,"Hearth of hall, burnt earth floor",STAM5,,61.7,13.0,3.9,,,,FALSE,FALSE,"Date assigned to the feature ""late 12th century AD""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Stamford Castle,Lincolnshire,TF,026,069,,Early Medieval/Medieval,Oven,Bakery oven,STAM2,,66.9,12.9,1.4,,,,FALSE,FALSE,A calibrated age range was not provided,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
15-17 High Street,Greater London,TQ,056,841,Department of Greater London Archaeology,Medieval,Hearth,Domestic hearth,F105,,56.7,5.7,2.7,,,,FALSE,FALSE,"Date assigned to the feature ""15th-early 16th century AD"". The mean magnetic vector was based on less that 8 specimens",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
15-17 High Street,Greater London,TQ,056,841,Department of Greater London Archaeology,Medieval,Hearth,Domestic hearth,F182,,61.7,8.3,5.4,,,,FALSE,FALSE,"Date assigned to the feature ""15th-early 16th century AD"". The mean magnetic vector was based on less than 8 specimens",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
15-17 High Street,Greater London,TQ,056,841,Department of Greater London Archaeology,Medieval,Oven,Round oven,F208,,56.1,3.4,1.4,,,,FALSE,FALSE,"Date assigned to the feature ""AD1375-1475""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
15-17 High Street,Greater London,TQ,056,841,Department of Greater London Archaeology,Medieval,Oven,Rectangular oven,F305,,54.0,3.0,1.8,,,,FALSE,FALSE,"Date assigned to the feature ""AD1375-1475""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
High Street (UX85VI),Greater London,TQ,056,841,Department of Greater London Archaeology,Medieval,Hearth,Pitched tile hearth,C66,,58.6,5.8,1.5,,,,FALSE,FALSE,"Date assigned to the feature ""Late Medieval"" (NB. Medieval period = AD1066-1540). The mean magnetic vector was based on less that 8 specimens",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Bedern,North Yorkshire,SE,604,531,York Archaeological Trust,Medieval,Kiln,Kiln clay walls,BED1,,60.2,4.5,3.8,,,,FALSE,FALSE,"Date assigned to the feature ""13th-15th century AD""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Coppergate,North Yorkshire,SE,605,518,York Archaeological Trust,Early Medieval/Medieval,Hearth,Hearths clay walls,COP2,,67.6,354.2,10.1,,,,FALSE,FALSE,Date assigned to the feature = Medieval. The alpha-95 value greatly exceeded the critical value of 5° used in dating,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Coppergate,North Yorkshire,SE,605,518,York Archaeological Trust,Early Medieval/Medieval,Hearth,Hearth clay walls,COP3,,57.4,359.6,4.2,,,,FALSE,FALSE,Date assigned to the feature = Medieval,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Coppergate,North Yorkshire,SE,605,518,York Archaeological Trust,Early Medieval/Medieval,Hearth,Hearth clay walls,COP1,,61.5,13.5,2.1,,,,FALSE,FALSE,"Date assigned to the feature ""about AD1200""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Coppergate,North Yorkshire,SE,605,518,York Archaeological Trust,Early Medieval/Medieval,Hearth,Hearth clay walls,COP4,,60.7,11.6,3.3,,,,FALSE,FALSE,Date assigned to the feature = Medieval,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Coppergate,North Yorkshire,SE,605,518,York Archaeological Trust,Early Medieval/Medieval,Hearth,Hearth clay walls,COP5,,66.9,12.3,5.0,,,,FALSE,FALSE,Date assigned to the feature = Medieval,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Coppergate,North Yorkshire,SE,605,518,York Archaeological Trust,Early Medieval/Medieval,Hearth,Hearth clay walls,COP6,,65.2,358.6,11.2,,,,FALSE,FALSE,Date assigned to the feature = Medieval. The alpha-95 value greatly exceeded the critical value of 5° used in dating.,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Coppergate,North Yorkshire,SE,605,518,York Archaeological Trust,Early Medieval/Medieval,Hearth,Fired clay of the hearth and fired brick surround were sampled,Hearth 22441,,69.2,14.3,5.9,815,840,"Hammo-Yassi (1983), developed from Aitken (1970)",FALSE,FALSE,"The calibrated archaeomagnetic date was earlier than expected, with an archaeological date of ""AD900-920"" being assigned to the feature, based on archaeological evidence. The mean magnetic vector was based on less than 8 specimens","N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Coppergate,North Yorkshire,SE,605,518,York Archaeological Trust,Early Medieval/Medieval,Hearth,Elongated hearth composed of fired clay and some brick fragments,Hearth 30757,,68.3,16.1,3.9,830,850,"Hammo-Yassi (1983), developed from Aitken (1970)",FALSE,FALSE,"Calibrated archaeomagnetic date was similar to the archaeological date assigned to the feature of ""c.AD850"".","N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Coppergate,North Yorkshire,SE,605,518,York Archaeological Trust,Early Medieval/Medieval,Hearth,Fired clay from a hearth ranging in colour from red to black,Hearth 22720,,67.2,16.9,1.9,850,860,"Hammo-Yassi (1983), developed from Aitken (1970)",FALSE,FALSE,"Calibrated archaeomagnetic date was slightly earlier than expected. The date assigned to the feature based on archaeological evidence was ""c.AD900"". The mean magnetic vector was based on less than 8 specimens","N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Vicars Choral of York Minster,North Yorkshire,SE,605,518,,Medieval,Hearth,Hearth,VIC1,,61.9,17.6,20.5,,,,FALSE,FALSE,Date assigned to the feature = Medieval. The alpha-95 value greatly exceeded the critical value of 5° used in dating.,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Vicars Choral of York Minster,North Yorkshire,SE,605,518,,Medieval,Hearth,Hearth,VIC2,,65.1,11.7,15.4,,,,FALSE,FALSE,Date assigned to the feature = Medieval. The alpha-95 value greatly exceeded the critical value of 5° used in dating.,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Vicars Choral of York Minster,North Yorkshire,SE,605,518,,Medieval,Hearth,Hearth,VIC3,,62.6,340.3,4.6,,,,FALSE,FALSE,Date assigned to the feature = Medieval,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Vicars Choral of York Minster,North Yorkshire,SE,605,518,,Medieval,Hearth,Hearth,VIC4,,54.0,352.2,10.3,,,,FALSE,FALSE,Date assigned to the feature = Medieval. The alpha-95 value greatly exceeded the critical value of 5° used in dating.,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Vicars Choral of York Minster,North Yorkshire,SE,605,518,,Medieval,Hearth,Hearth,VIC5,,43.4,350.6,9.7,,,,FALSE,FALSE,Date assigned to the feature = Medieval. The alpha-95 value greatly exceeded the critical value of 5° used in dating.,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Vicars Choral of York Minster,North Yorkshire,SE,605,518,,Medieval,Hearth,Hearth,VIC6,,56.8,356.2,4.1,,,,FALSE,FALSE,Date assigned to the feature = Medieval,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Vicars Choral of York Minster,North Yorkshire,SE,605,518,,Medieval,Hearth,Hearth,VIC6,,56.8,356.2,4.1,,,,FALSE,FALSE,Date assigned to the feature = Medieval,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Vicars Choral of York Minster,North Yorkshire,SE,605,518,,Medieval,Hearth,Hearth,VIC7,,64.1,358.3,4.7,,,,FALSE,FALSE,Date assigned to the feature = Medieval. The mean magnetic vector was based on less that 8 specimens,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Walmgate,North Yorkshire,SE,605,518,York Archaeological Trust,Medieval,Hearth,Clay walls,WAL4,,65.6,7.1,4.8,,,,FALSE,FALSE,"Date assigned to the feature ""15th century AD""",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Flaxengate,North Yorkshire,SK,936,679,,Medieval,Area of burning,,FLA1,,71.1,6.3,7.5,,,,FALSE,FALSE,Date assigned to the feature = Medieval,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Flaxengate,North Yorkshire,SK,936,679,,Medieval,,,FLA2,,76.3,37.3,36.9,,,,FALSE,FALSE,"Date assigned to the feature = Medieval. The alpha-95 value greatly exceeded the critical value of 5° used in dating, and the mean magnetic vector was based on less that 8 specimens","A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Flaxengate,North Yorkshire,SK,936,679,,Medieval,,,FLA3,,71.7,20.4,4.3,,,,FALSE,FALSE,Date assigned to the feature = Medieval,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
High Rocks,East Sussex,TQ,561,382,,Iron Age,Hearth,Hearth,HR,"Research Laboratories for Archaeology and the History of Art, University of Oxford",53.4,14.7,3.9,,,,FALSE,FALSE,"Date assigned to the feature ""?Iron Age"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Stanton Harcourt,Oxfordshire,SP,410,040,Oxford University Archaeological Society,Iron Age,Hearth,Hearth,SH,"Research Laboratories for Archaeology and the History of Art, University of Oxford",65.5,353.0,4.2,,,,FALSE,FALSE,"Date assigned to the feature ""Iron Age A"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less that 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Cantley,South Yorkshire,SE,652,020,,Roman Britain,Kiln,Pottery Kiln,CA/35,"Research Laboratories for Archaeology and the History of Art, University of Oxford",60.0,4.3,3.1,,,,FALSE,FALSE,"Date assigned to the feature ""AD200-300"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Cantley,South Yorkshire,SE,652,020,,Roman Britain,Kiln,Pottery kiln,CA/33,"Research Laboratories for Archaeology and the History of Art, University of Oxford",59.0,6.0,,,,,FALSE,FALSE,"Date assigned to the feature ""AD280-400"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Cantley,South Yorkshire,SE,652,020,,Roman Britain,Kiln,Pottery kiln,CA/34,"Research Laboratories for Archaeology and the History of Art, University of Oxford",359.0,59.0,,,,,FALSE,FALSE,"Date assigned to the feature ""AD280-400"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Cantley,South Yorkshire,SE,652,020,,Roman Britain,Hearth,Hearth,CA/37,"Research Laboratories for Archaeology and the History of Art, University of Oxford",61.5,2.0,,,,,FALSE,FALSE,"Date assigned to the feature ""AD 280-400"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Cantley,South Yorkshire,SE,652,020,,Roman Britain,Kiln,Pottery kiln,CA/38,"Research Laboratories for Archaeology and the History of Art, University of Oxford",61.5,1.0,,,,,FALSE,FALSE,"Date assigned to the feature ""AD280-400"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Cantley,South Yorkshire,SE,652,020,,Roman Britain,Kiln,Pottery kiln,CA/39,"Research Laboratories for Archaeology and the History of Art, University of Oxford",61.6,356.2,2.0,,,,FALSE,FALSE,"Date assigned to the feature ""AD280-400"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Castor,Cambridgeshire,TL,126,973,,Roman Britain,Kiln,Pottery kiln,CT,"Research Laboratories for Archaeology and the History of Art, University of Oxford",64.8,4.7,2.0,,,,FALSE,FALSE,"Date assigned to the feature ""AD270-350"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Cox Green,Berkshire,SU,869,798,,Roman Britain,Hypocaust,Hypocaust,CG/3,"Research Laboratories for Archaeology and the History of Art, University of Oxford",63.7,353.0,2.9,,,,FALSE,FALSE,"Date assigned to the feature ""AD300-385"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Cox Green,Berkshire,SU,869,798,,Roman Britain,Hypocaust,Hypocaust,CG/8,"Research Laboratories for Archaeology and the History of Art, University of Oxford",62.0,354.5,1.5,,,,FALSE,FALSE,"Date assigned to the feature ""AD315-400"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Hamstead Marshall,Berkshire,SU,416,662,Berkshire Field Research Group,Roman Britain,Kiln,Pottery kiln A,HM/1,"Research Laboratories for Archaeology and the History of Art, University of Oxford",61.4,357.7,2.4,,,,FALSE,FALSE,"Date assigned to the feature ""?4th century AD"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Hamstead Marshall,Berkshire,SU,416,662,Berkshire Field Research Group,Roman Britain,Kiln,Pottery kiln H,HM/2,"Research Laboratories for Archaeology and the History of Art, University of Oxford",62.4,359.3,2.4,,,,FALSE,FALSE,"Date assigned to the feature ""?4th century AD"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less that 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Hamstead Marshall,Berkshire,SU,416,662,Berkshire Field Research Group,Roman Britain,Kiln,Pottery kiln F,HM/3,"Research Laboratories for Archaeology and the History of Art, University of Oxford",60.9,355.0,8.8,,,,FALSE,FALSE,"Date assigned to the feature ""?4th century AD"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The alpha-95 value greatly exceeded the critical value of 5° used in dating.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Hartshill,Warwickshire,SP,337,936,,Roman Britain,Kiln,Pottery kiln  No. 12,HL/12,"Research Laboratories for Archaeology and the History of Art, University of Oxford",59.9,4.0,3.5,,,,FALSE,FALSE,"Date assigned to the feature ""AD100-200"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Hartshill,Warwickshire,SP,337,936,,Roman Britain,Kiln,Pottery kiln No.24,HL/24,"Research Laboratories for Archaeology and the History of Art, University of Oxford",66.4,350.5,3.1,,,,FALSE,FALSE,"Date assigned to the feature ""AD100-140"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Long Hanborough,Oxfordshire,SP,418,135,,Roman Britain,Kiln,Pottery kiln,LH,"Research Laboratories for Archaeology and the History of Art, University of Oxford",71.2,349.0,,,,,FALSE,FALSE,"Date assigned to the feature ""AD25-75"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Pickworth,Leicestershire,SK,947,123,,Roman Britain,Furnace,Iron smelting furnace,PW,"Research Laboratories for Archaeology and the History of Art, University of Oxford",65.5,354.4,,,,,FALSE,FALSE,"Date assigned to the feature ""?Second century AD"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Savernake,Wiltshire,SU,222,651,,Roman Britain,Kiln,Pottery kiln (No.3),SV,"Research Laboratories for Archaeology and the History of Art, University of Oxford",62.5,9.3,2.9,,,,FALSE,FALSE,"Date assigned to the feature ""AD70-110"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Stoke-on-Trent,Staffordshire,SJ,880,450,,Roman Britain,Kiln,Pottery kiln,ST,"Research Laboratories for Archaeology and the History of Art, University of Oxford",67.2,358.4,1.4,,,,FALSE,FALSE,"Date assigned to the feature ""AD50-70"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Wappenbury,Warwickshire,SP,377,693,,Roman Britain,Kiln,Pottery kiln 1,WP/1,"Research Laboratories for Archaeology and the History of Art, University of Oxford",65.6,358.9,1.2,,,,FALSE,FALSE,"Date assigned to the feature ""AD300-350"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Cuddington,Greater London,TQ,228,632,,Medieval,Area of burning,Burnt beam slot,NS/C,"Research Laboratories for Archaeology and the History of Art, University of Oxford",64.3,2.0,2.9,,,,FALSE,FALSE,"Feature dated to ""AD1050-1100"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The magnetic vector was based on less than 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Eaton Socon,Bedfordshire,TL,173,589,,Medieval,Hearth,Hearth sealed by the outer rampart of the castle,ES,"Research Laboratories for Archaeology and the History of Art, University of Oxford",61.6,21.7,2.1,,,,FALSE,FALSE,"Date assigned to the feature ""AD1050-1150"". The construction date for the castle: ""AD1143-1144"" = the upper limit for the date of the hearth. The data was reduced to a latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Cox Lane,Suffolk,TM,167,446,,Early Medieval/Medieval,Kiln,Pottery kiln I,IP,"Research Laboratories for Archaeology and the History of Art, University of Oxford",67.4,24.7,1.2,,,,FALSE,FALSE,"Date assigned to the feature ""AD850-1150"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
York Street,Lincolnshire,TF,334,439,,Medieval,Kiln,Tile kiln,BO,"Research Laboratories for Archaeology and the History of Art, University of Oxford",58.0,359.3,0.6,,,,FALSE,FALSE,"Date assigned to the feature ""AD1300-1350"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Brill,Buckinghamshire,SP,657,143,,Medieval,Kiln,Pottery Kiln D,BR/D,"Research Laboratories for Archaeology and the History of Art, University of Oxford",55.8,1.2,2.6,,,,FALSE,FALSE,"Date assigned to the feature ""AD1300-1350"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Brill,Buckinghamshire,SP,657,143,,Medieval,Kiln,Pottery kiln E,BR/E,"Research Laboratories for Archaeology and the History of Art, University of Oxford",58.9,359.6,2.4,,,,FALSE,FALSE,"Date assigned to the feature ""AD1300-1350"" and may be contemporary with Kiln D. The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Downpatrick,County Down,SB,561,959,,Medieval,Kiln,Pottery kiln,DP,"Research Laboratories for Archaeology and the History of Art, University of Oxford",58.5,9.9,0.9,,,,FALSE,FALSE,"Date assigned to the feature ""AD1250-1325"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Toynton All Saints,Lincolnshire,TF,395,631,,Medieval,Kiln,Pottery kiln,TN,"Research Laboratories for Archaeology and the History of Art, University of Oxford",52.4,0.1,1.8,,,,FALSE,FALSE,"Date assigned to the feature ""AD1275-1325"" (Webster & Cherry, 1973, Medieval Archaeology 17: 184-185). The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Toynton All Saints,Lincolnshire,TF,395,631,,Medieval,Kiln,Pottery kiln 3,TN/3,"Research Laboratories for Archaeology and the History of Art, University of Oxford",55.0,2.5,0.9,,,,FALSE,FALSE,"Date assigned to the feature ""AD1275-1325"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Toynton All Saints,Lincolnshire,TF,395,631,,Medieval,Kiln,The floor of pottery kiln 2 were sampled,TN/2,"Research Laboratories for Archaeology and the History of Art, University of Oxford",64.5,11.6,0.7,,,,FALSE,FALSE,"Date assigned to the feature ""AD1475-1525"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Glasshouse Farm,Herefordshire,SO,474,230,,Post-Medieval,Furnace,Glass furnace,GY,"Research Laboratories for Archaeology and the History of Art, University of Oxford",69.7,9.7,2.3,,,,FALSE,FALSE,"Date assigned to the feature ""c.AD1600"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Nonsuch,Surrey,TQ,228,631,,Post-Medieval,Kiln,Brick or tile kiln,NS/K,"Research Laboratories for Archaeology and the History of Art, University of Oxford",72.7,0.7,1.3,,,,FALSE,FALSE,"Date assigned to the feature ""AD1538-1547"" or ""AD1665"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Boston,Lincolnshire,TF,334,439,,20th Century,Kiln,Experimental pottery kiln E.K.1,BO/E.K.1,"Research Laboratories for Archaeology and the History of Art, University of Oxford",68.0,354.3,1.4,,,,FALSE,FALSE,"Date assigned to the feature ""AD1961"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Boston,Lincolnshire,TF,334,439,,20th Century,Kiln,Experimental pottery kiln E.K.2,BO/E.K.2,"Research Laboratories for Archaeology and the History of Art, University of Oxford",67.3,350.1,0.9,,,,FALSE,FALSE,"Date assigned to the feature ""AD1962"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & G.H. Weaver (1962) Magnetic dating: some Archaeomagnetic measurements in Britain. Archaeometry 5: 4-19
Bury Camp,Wiltshire,ST,817,740,,Iron Age,Hearth,Hearth - irregular circle of blackened hearth stones,BC,"Research Laboratories for Archaeology and the History of Art, University of Oxford",65.4,349.9,4.3,,,,FALSE,FALSE,"Feature dated to ""200-100BC"" based on the pottery evidence. The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Easington,"East Riding, Yorkshire",TA,409,181,,Bronze Age,Hearth,small clay hearth underneath a round barrow,EA,"Research Laboratories for Archaeology and the History of Art, University of Oxford",72.1,352.6,2.4,,,,FALSE,FALSE,"Date assigned to the feature ""1600-1300BC"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Rainsborough,Northamptonshire,SP,526,348,,Iron Age,Hearth,Hearths located in the guard-rooms of the fort,RA,"Research Laboratories for Archaeology and the History of Art, University of Oxford",67.9,357.6,2.8,,,,FALSE,FALSE,"Feature dated to ""450-300BC"" based on the pottery evidence. The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Weeping Cross,Shropshire,SJ,508,105,,Bronze Age,Hearth,Oval area of burnt clay containing fragments of human bone and charcoal. It may be associated with the adjacent cremation burial,WE,"Research Laboratories for Archaeology and the History of Art, University of Oxford",64.1,354.8,2.4,,,,FALSE,FALSE,"Date assigned to the feature ""Middle Bronze Age"" based on the pottery evidence of the adjacent cremation burial. The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Thetford,Norfolk,TL,865,828,,Early Medieval/Medieval,Kiln,Pottery kiln,TF/7,"Research Laboratories for Archaeology and the History of Art, University of Oxford",66.2,26.7,3.6,,,,FALSE,FALSE,"Date assigned to the feature ""AD900-1100"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Thetford,Norfolk,TL,865,828,,Early Medieval/Medieval,Kiln,Pottery kiln,TF/33,"Research Laboratories for Archaeology and the History of Art, University of Oxford",65.8,23.9,2.2,,,,FALSE,FALSE,"Date assigned to the feature ""AD900-1100"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Thetford,Norfolk,TL,865,828,,Early Medieval/Medieval,Kiln,Pottery kiln,TF/46,"Research Laboratories for Archaeology and the History of Art, University of Oxford",65.6,21.4,1.9,,,,FALSE,FALSE,"Date assigned to the feature ""AD900-1100"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Thetford,Norfolk,TL,865,828,,Early Medieval/Medieval,Kiln,Pottery kiln,TF/61,"Research Laboratories for Archaeology and the History of Art, University of Oxford",64.9,25.6,3.3,,,,FALSE,FALSE,"Date assigned to the feature ""AD900-1100"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Thetford,Norfolk,TL,865,828,,Early Medieval/Medieval,Kiln,Pottery kiln,TF/97,"Research Laboratories for Archaeology and the History of Art, University of Oxford",67.1,22.5,3.4,,,,FALSE,FALSE,"Date assigned to the feature ""AD900-1100"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Thetford,Norfolk,TL,865,828,,Early Medieval/Medieval,Kiln,Pottery kiln,TF/115,"Research Laboratories for Archaeology and the History of Art, University of Oxford",66.2,19.5,1.6,,,,FALSE,FALSE,"Date assigned to the feature ""AD900-1100"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Torskey,Lincolnshire,SK,836,785,,Early Medieval,Kiln,Pottery kiln,TK/4,"Research Laboratories for Archaeology and the History of Art, University of Oxford",70.4,22.1,1.9,,,,FALSE,FALSE,"Date assigned to the feature ""AD900-1000"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Torskey,Lincolnshire,SK,836,785,,Early Medieval,Kiln,Pottery kiln,TK/5,"Research Laboratories for Archaeology and the History of Art, University of Oxford",68.0,16.6,2.1,,,,FALSE,FALSE,"Date assigned to the feature ""AD1050-1150"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Assize Courts South,Hampshire,SU,478,295,,Early Medieval,Hearth,"Hearth on floor 1, House II",WI/A,"Research Laboratories for Archaeology and the History of Art, University of Oxford",66.8,22.1,2.1,,,,FALSE,FALSE,"Date assigned to the feature ""AD900-1000"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Binstead,West Sussex,SU,979,066,,Medieval,Kiln,Pottery kiln,BI,"Research Laboratories for Archaeology and the History of Art, University of Oxford",52.3,10.5,1.9,,,,FALSE,FALSE,"Date assigned to the feature ""AD1250-1350"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Camley,Berkshire,SU,860,817,,Medieval,Kiln,Pottery kiln 2 from site 4,CM,"Research Laboratories for Archaeology and the History of Art, University of Oxford",61.5,10.0,1.0,,,,FALSE,FALSE,"Date assigned to the feature ""AD1100-1300"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Thorpe Lodge,,TL,155,704,,Medieval,Hearth,Tile and clay hearth,EL,"Research Laboratories for Archaeology and the History of Art, University of Oxford",50.9,10.9,8.1,,,,FALSE,FALSE,"Date assigned to the feature AD""1170-1230"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Follifoot,West Yorkshire,SE,345,524,,Medieval,Kiln,Pottery kiln,FF,"Research Laboratories for Archaeology and the History of Art, University of Oxford",60.6,8.0,2.1,,,,FALSE,FALSE,"Date assigned to the feature ""AD1470-1530"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Hen Domen,Powys,SO,214,981,,Medieval,Area of burning,burnt area within the tower (Structure XIV) on the bailey rampart,HE,"Research Laboratories for Archaeology and the History of Art, University of Oxford",56.0,6.5,6.2,,,,FALSE,FALSE,"Feature dated to ""AD1200-1300"". The data had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens and the alpha-95 exceeded 5°",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Lower Book Street,Hampshire,SU,484,295,,Medieval,Hearth,Hearth from timber house III,WI/2,"Research Laboratories for Archaeology and the History of Art, University of Oxford",59.9,20.4,1.9,,,,FALSE,FALSE,"Date assigned to the feature ""AD1200-1330"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens.",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Lower Book Street,Hampshire,SU,484,295,,Medieval,Oven,"Oven on the site of House VI, probably belonging to House III",WI/3,"Research Laboratories for Archaeology and the History of Art, University of Oxford",63.7,9.2,1.7,,,,FALSE,FALSE,"Date assigned to the feature ""AD1370-1430"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Cathedral Green,Hampshire,SU,482,293,,Medieval,Furnace,Bell furnace P2,WI/P2,"Research Laboratories for Archaeology and the History of Art, University of Oxford",71.0,15.2,3.8,,,,FALSE,FALSE,"Date assigned to the feature ""AD1100-1130"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Cathedral Green,Hampshire,SU,482,293,,Medieval,Furnace,Bell furnace P3,WI/P3,"Research Laboratories for Archaeology and the History of Art, University of Oxford",53.5,7.2,4.6,,,,FALSE,FALSE,"Date assigned to the feature ""AD1100-1130"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Woodhouse Farm,West Yorkshire,SE,240,715,,Medieval,Kiln,Pottery kiln 2,WF/2,"Research Laboratories for Archaeology and the History of Art, University of Oxford",60.3,1.2,1.0,,,,FALSE,FALSE,"Date assigned to the feature ""AD1250-1350"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Woodhouse Farm,West Yorkshire,SE,240,715,,Medieval,Kiln,Pottery kiln 1,WF/1,"Research Laboratories for Archaeology and the History of Art, University of Oxford",58.3,3.2,1.2,,,,FALSE,FALSE,"Date assigned to the feature ""AD1250-1350"", stratigrahically above WF/2. The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Woodhouse Farm,West Yorkshire,SE,240,715,,Medieval,Kiln,kiln slightly later in date to WF/1 and WF/2,WF/3,"Research Laboratories for Archaeology and the History of Art, University of Oxford",56.5,10.7,1.2,,,,FALSE,FALSE,"Date assigned to the feature ""AD1250-1375"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Woodhouse Farm,West Yorkshire,SE,240,715,,Medieval,Kiln,Floor of the pottery kiln was sampled,WF/4,"Research Laboratories for Archaeology and the History of Art, University of Oxford",60.2,8.9,2.1,,,,FALSE,FALSE,"Date assigned to the feature ""AD1250-1375"" based on the pottery evidence. The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Bagots Park,Staffordshire,SK,090,270,Staffordshire County Council,Post-Medieval,Furnace,Annealing furnace,BP/1,"Research Laboratories for Archaeology and the History of Art, University of Oxford",66.1,15.0,2.1,,,,FALSE,FALSE,"Date assigned to the feature ""AD1550-1600"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens.",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Bagots Park,Staffordshire,SK,090,270,Staffordshire County Council,Post-Medieval,Furnace,Smelting furnace,BP/2,"Research Laboratories for Archaeology and the History of Art, University of Oxford",66.5,12.0,0.5,,,,FALSE,FALSE,"Date assigned to the feature ""AD1550-1600"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Pottersbury,Northamptonshire,SP,762,432,,Post-Medieval,Kiln,Pottery kiln,PP,"Research Laboratories for Archaeology and the History of Art, University of Oxford",70.6,8.7,1.7,,,,FALSE,FALSE,"Date assigned to the feature ""AD1600-1700"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens.",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Potovens,West Yorkshire,SE,315,225,,Post-Medieval,Kiln,Clamp kiln (kiln 7),WR,"Research Laboratories for Archaeology and the History of Art, University of Oxford",73.9,359.0,0.7,,,,FALSE,FALSE,"Date assigned to the feature ""AD1649-1679"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1966) Magnetic dating III: further Archaeomagnetic measurements in Britain. Archaeometry 9: 187-197
Coldwell Bridge,Oxfordshire,SP,299,175,,Neolithic,Hearth,Hearth,AW,"Research Laboratories for Archaeology and the History of Art, University of Oxford",71.2,9.9,2.8,,,,FALSE,FALSE,"Feature dated to the ""4th millennium BC or the first half of the 3rd millennium BC"", but is uncertain. The data had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
City Farm,Oxfordshire,SP,413,116,,Iron Age,Oven,Small oven or fire pit within the remains of a circular timber house,CF,"Research Laboratories for Archaeology and the History of Art, University of Oxford",72.3,357.5,3.1,,,,FALSE,FALSE,"Date assigned to the feature ""c.100-50BC"" based on the pottery evidence. The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Dragonby,Lincolnshire,SE,927,124,,Roman Britain,Kiln,Pottery kiln floor and walls,DG (floor & walls),"Research Laboratories for Archaeology and the History of Art, University of Oxford",65.6,359.1,5.2,,,,FALSE,FALSE,"Date assigned to the feature ""AD50-100"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Dragonby,Lincolnshire,SE,927,124,,Roman Britain,Kiln,Pottery kiln floor,DG (floor),"Research Laboratories for Archaeology and the History of Art, University of Oxford",61.9,2.7,3.6,,,,FALSE,FALSE,"Date assigned to the feature ""AD50-100"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
"New Colege of Art, Brunswick Road",Gloucestershire,SO,833,183,,Roman Britain,Kiln,"Parts of the floor, walls and pedestal were sampled of one of the kilns found outside of the east ditch of the Roman fortress","GL (f, w & p)","Research Laboratories for Archaeology and the History of Art, University of Oxford",64.9,2.7,2.6,,,,FALSE,FALSE,"Date assigned to the feature ""AD60-80"" based on the pottery evidence. The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
"New Colege of Art, Brunswick Road",Gloucestershire,SO,833,183,,Roman Britain,Kiln,Floor of one of the pottery kilns located outside the east ditch of the Roman fortress,GL (f),"Research Laboratories for Archaeology and the History of Art, University of Oxford",62.8,359.3,0.7,,,,FALSE,FALSE,"Date assigned to the feature ""AD60-80"" based on the pottery evidence. The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Hay-on-Wye,Powys,SO,247,452,,Roman Britain,Oven,The walls and floor of an oven were sampled,HW,"Research Laboratories for Archaeology and the History of Art, University of Oxford",63.2,355.0,6.2,,,,FALSE,FALSE,"Date assigned to the feature ""AD40-70"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The alpha-95 values exceeded the critical value of 5° used in dating",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Holbrook,Derbyshire,SK,358,444,,Roman Britain,Kiln,The walls of the pottery kiln were sampled,FB,"Research Laboratories for Archaeology and the History of Art, University of Oxford",62.8,9.4,4.3,,,,FALSE,FALSE,"Date assigned to the feature ""AD100-300"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Mancetter,Warwickshire,SP,326,927,,Roman Britain,Kiln,The floor and walls of pottery kiln 2 were sampled,MC/2,"Research Laboratories for Archaeology and the History of Art, University of Oxford",64.4,352.7,3.8,,,,FALSE,FALSE,"Date assigned to the feature ""AD200-260"" based on the pottery evidence. The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Mancetter,Warwickshire,SP,326,927,,Roman Britain,Kiln,floor of pottery kiln 2,MC/2 floor,"Research Laboratories for Archaeology and the History of Art, University of Oxford",60.9,358.1,3.4,,,,FALSE,FALSE,"Date assigned to the feature ""AD200-260"" based on the pottery evidence. The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Mancetter,Warwickshire,SP,326,927,,Roman Britain,Kiln,"The floors, walls and pedestal of Kiln 3 were sampled",MC/3A,"Research Laboratories for Archaeology and the History of Art, University of Oxford",64.2,13.0,2.1,,,,FALSE,FALSE,"Date assigned to the feature ""AD150-180"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Mancetter,Warwickshire,SP,326,927,,Roman Britain,Kiln,The walls and pedestal of Kiln 4 were sampled,MC/4,"Research Laboratories for Archaeology and the History of Art, University of Oxford",64.7,4.2,4.0,,,,FALSE,FALSE,"Date assigned to the feature ""AD155-190"" based on the pottery evidence. The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Mancetter,Warwickshire,SP,326,927,,Roman Britain,Kiln,"The floors, walls and pedestal of Kiln 9 were sampled",MC/9,"Research Laboratories for Archaeology and the History of Art, University of Oxford",65.3,0.9,2.4,,,,FALSE,FALSE,"Date assigned to the feature ""AD260-310"" based on the pottery evidence. The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Mancetter,Warwickshire,SP,326,927,,Roman Britain,Kiln,The floor of Kiln 9 was sampled,MC/9 (floor),"Research Laboratories for Archaeology and the History of Art, University of Oxford",63.2,2.1,2.1,,,,FALSE,FALSE,"Feature dated to ""AD260-310"" based on the pottery evidence. The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Old Burrow,Devon,SS,780,490,Devon Archaeological Exploration Society,Roman Britain,Oven,The floor of the oven was sampled,OB,"Research Laboratories for Archaeology and the History of Art, University of Oxford",63.3,355.2,4.8,,,,FALSE,FALSE,"Date assigned to the feature ""AD50-70"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Pitt's Wood,Hampshire,SU,198,144,,Roman Britain,Kiln,Walls of the pottery kiln,PI,"Research Laboratories for Archaeology and the History of Art, University of Oxford",64.7,358.5,1.2,,,,FALSE,FALSE,"Date assigned to the feature ""AD330-370"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Sloden,Hampshire,SU,205,131,,Roman Britain,Kiln,The floor and walls of the pottery kiln were sampled,SO/1,"Research Laboratories for Archaeology and the History of Art, University of Oxford",65.8,355.2,3.1,,,,FALSE,FALSE,"Date assigned to the feature ""AD300-330"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Sloden,Hampshire,SU,205,131,,Roman Britain,Kiln,Floor of the pottery kiln was sampled,SO/1 (floor),"Research Laboratories for Archaeology and the History of Art, University of Oxford",64.0,2.2,5.2,,,,FALSE,FALSE,"Date assigned to the feature ""AD300-330"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Sloden,Hampshire,SU,205,131,,Roman Britain,Kiln,Pottery kiln walls,SO/2,"Research Laboratories for Archaeology and the History of Art, University of Oxford",65.8,0.2,1.2,,,,FALSE,FALSE,"Date assigned to the feature ""AD300-330"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Park Farm,Cambridgeshire,TL,210,960,Nene Valley Research Committee,Roman Britain,Kiln,"The walls and pedestal of the pottery kiln, made of sun-dried blocks",SG,"Research Laboratories for Archaeology and the History of Art, University of Oxford",62.3,0.7,2.8,,,,FALSE,FALSE,"Date assigned to the feature ""AD200-230"".The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Christ Church,Oxfordshire,SP,515,060,,Medieval,Hearth,Hearth sealed under a road of c.AD1120-1140,CC/2,"Research Laboratories for Archaeology and the History of Art, University of Oxford",60.9,19.0,2.8,,,,FALSE,FALSE,"Date assigned to the feature ""AD1100-1130"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Northampton Castle,Northamptonshire,SP,750,604,,Medieval,Hearth,Hearth beneath the bailey curtain of the 12th century castle,NC/2,"Research Laboratories for Archaeology and the History of Art, University of Oxford",65.2,9.9,3.8,,,,FALSE,FALSE,"Date assigned to the feature ""AD1050-1100"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Ludgershall Castle,Warwickshire,SU,263,512,,Medieval,Hearth,A burnt hearth structure underneath the inner bank of the southern ringwork,LC,"Research Laboratories for Archaeology and the History of Art, University of Oxford",59.5,17.8,2.4,,,,FALSE,FALSE,"Date assigned to the feature ""AD1125-1175"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Great Easton,Essex,TL,609,254,,Medieval,Oven,The floor of the oven sampled from the second phase of the kitchen (Kitchen II),GE/1,"Research Laboratories for Archaeology and the History of Art, University of Oxford",56.6,3.6,0.9,,,,FALSE,FALSE,"Date assigned to this feature ""c.AD1400 or earlier"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Great Easton,Essex,TL,609,254,,Medieval,Hearth,Hearth located in the remodelled kitchen (Kitchen II),GE/2,"Research Laboratories for Archaeology and the History of Art, University of Oxford",56.3,2.3,1.0,,,,FALSE,FALSE,"Date assigned to the feature ""c.AD1400 or earlier"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Great Easton,Essex,TL,609,254,,Medieval,Hearth,The central clay hearth in Kitchen I,GE/3,"Research Laboratories for Archaeology and the History of Art, University of Oxford",59.9,5.4,0.7,,,,FALSE,FALSE,"Date assigned to the feature ""c.AD1200 or later"" based on the pottery evidence. The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Sandal Castle,West Yorkshire,SE,338,182,,Medieval,Hearth,Hearth,SD/1,"Research Laboratories for Archaeology and the History of Art, University of Oxford",56.7,0.7,2.4,,,,FALSE,FALSE,"Date assigned to the feature ""c.AD1500"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Sandal Castle,West Yorkshire,SE,338,182,,Medieval,Area of burning,Smelting pit,SD/2,"Research Laboratories for Archaeology and the History of Art, University of Oxford",53.7,3.4,6.9,,,,FALSE,FALSE,"Date assigned to the feature ""c.AD1500"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The alpha-95 value exceeded the critical value of 5° used in dating",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Sandal Castle,West Yorkshire,SE,338,182,,Medieval,Hearth,Hearth,SD/3,"Research Laboratories for Archaeology and the History of Art, University of Oxford",62.5,1.6,2.9,,,,FALSE,FALSE,"Date assigned to the feature ""c.AD1500"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Crockerton,Wiltshire,ST,862,423,,Post-Medieval,Kiln,The walls and pedestal of a pottery kiln were sampled,CR,"Research Laboratories for Archaeology and the History of Art, University of Oxford",69.7,10.8,1.0,,,,FALSE,FALSE,"Date assigned to the feature ""AD1575-1640"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Ramsey Abbey,Cambridgeshire,TL,296,848,,Medieval,Kiln,The floor of a brick kiln,RY,"Research Laboratories for Archaeology and the History of Art, University of Oxford",63.4,10.7,0.7,,,,FALSE,FALSE,"Date assigned to the feature ""AD1500-1540"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Rockley,South Yorkshire,SE,340,023,,Post-Medieval,Furnace,iron furnace,RK/1,"Research Laboratories for Archaeology and the History of Art, University of Oxford",64.0,1.4,4.0,,,,FALSE,FALSE,"Date assigned to the feature ""c.AD1600"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here. The mean magnetic vector was based on less than 8 specimens",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Rockley,South Yorkshire,SE,340,023,,Post-Medieval,Furnace,Iron furnace,RK/2,"Research Laboratories for Archaeology and the History of Art, University of Oxford",71.1,356.2,2.1,,,,FALSE,FALSE,"Date assigned to the feature ""c.AD1600"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken & H.N. Hawley (1967) Archaeomagnetic measurements in Britain IV. Archaeometry 10: 129-134
Irthing Valley,Cumbria,NY,524,613,,Roman Britain,Kiln,Samples collected from the crosswalls of kiln No.2,IV,"Research Laboratories for Archaeology and the History of Art, University of Oxford",68.2,0.2,0.3,,,,FALSE,FALSE,"Date assigned to the feature ""AD90-120"" based on the pottery evidence. The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken et al. (1963) Magnetic dating: further Archaeomagnetic measurements in Britain. Archaeometry 6: 76-81
Co-Operative society,Lincolnshire,TF,031,072,,Medieval,Hearth,Iron smelting hearth,SA,"Research Laboratories for Archaeology and the History of Art, University of Oxford",65.9,25.0,,,,,FALSE,FALSE,"Date assigned to the feature ""AD900-1100"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken et al. (1963) Magnetic dating: further Archaeomagnetic measurements in Britain. Archaeometry 6: 76-81
Grimston,Norfolk,TF,712,217,,Medieval,Kiln,Pottery kiln walls,GR,"Research Laboratories for Archaeology and the History of Art, University of Oxford",63.8,12.6,2.1,,,,FALSE,FALSE,"Date assigned to the feature ""AD1100-1150"". The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken et al. (1963) Magnetic dating: further Archaeomagnetic measurements in Britain. Archaeometry 6: 76-81
Stamford School,Lincolnshire,TF,033,074,,Medieval,Kiln,Pottery kiln walls,SM,"Research Laboratories for Archaeology and the History of Art, University of Oxford",61.3,13.5,0.8,,,,FALSE,FALSE,"Date assigned to the feature ""AD1200-1230"" based in the pottery evidence. The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",Magnetic dating: further Archaeomagnetic measurements in Britain
West Cowick,West Yorkshire,SE,646,216,,Medieval,Kiln,Samples from the floor of a large multi-flue kiln (kiln 3A),WC/3B,"Research Laboratories for Archaeology and the History of Art, University of Oxford",56.9,3.0,0.7,,,,FALSE,FALSE,"Date assigned to the feature ""AD1300-1350"" based on the pottery evidence. The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",Magnetic dating: further Archaeomagnetic measurements in Britain
West Cowick,West Yorkshire,SE,646,216,,Medieval,Kiln,Samples collected from the floor of a large multi-flue kiln (kiln 2A),WC/2A,"Research Laboratories for Archaeology and the History of Art, University of Oxford",56.1,357.8,1.6,,,,FALSE,FALSE,"Date assigned to the feature ""AD1370-1500"" based on the pottery evidence. The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",Magnetic dating: further Archaeomagnetic measurements in Britain
West Cowick,West Yorkshire,SE,646,216,,Medieval,Kiln,Samples from the floor of a large multi-flue kiln (kiln 1D),WC/1D,"Research Laboratories for Archaeology and the History of Art, University of Oxford",60.6,5.7,0.4,,,,FALSE,FALSE,"Date assigned to the feature ""AD1450-1530"" based on the pottery evidence. The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",Magnetic dating: further Archaeomagnetic measurements in Britain
West Cowick,West Yorkshire,SE,646,216,,Medieval,Kiln,Samples from the floor of a large multi-flue kiln (kiln 1B),WC/1B,"Research Laboratories for Archaeology and the History of Art, University of Oxford",60.7,7.1,0.8,,,,FALSE,FALSE,"Date assigned to the feature ""AD1450-1530"" based on the pottery evidence. The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",Magnetic dating: further Archaeomagnetic measurements in Britain
Potterton,West Yorkshire,SE,403,338,,Medieval,Kiln,The floor of the pottery kiln was sampled,PO,"Research Laboratories for Archaeology and the History of Art, University of Oxford",62.9,9.9,1.0,,,,FALSE,FALSE,"Date assigned to the feature ""AD1450-1550"" based on the pottery evidence. The data in the paper had been reduced to the latitude of 51.5° (London). This correction was removed for the data presented here.",M.J. Aitken et al. (1963) Magnetic dating: further Archaeomagnetic measurements in Britain. Archaeometry 6: 76-81
Alice Holt Forest,Surrey,SU,805,396,,Roman Britain,Kiln,Clay floor of the pottery kiln was sampled,AML-850025 (AL 1/2A),Ancient Monuments Laboratory,56.4,2.5,1.1,,,,FALSE,FALSE,"Date assigned to the feature ""AD210-230"" based on the Romano-British pottery",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Alice Holt Forest,Surrey,SU,805,396,,Roman Britain,Kiln,Clay floor of the pottery kiln was sampled,AML-850025 (ALC 2),Ancient Monuments Laboratory,53.7,5.4,3.8,,,,FALSE,FALSE,"Date assigned to the feature ""AD230-260"" based on Romano-British pottery.",A.J. Clark et al. (1988) Developments in Archaeomagnetic dating in Britain. Journal of Archaeological Science 15: 645-667
Alice Holt Forest,Surrey,SU,805,396,,Roman Britain,Kiln,Floor of pottery kilns was sampled,AL 1/2B,,52.6,357.0,2.4,,,,FALSE,FALSE,"Date assigned to the feature ""Romano-British"" based on the pottery evidence","A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Alice Holt Forest,Surrey,SU,805,396,,Roman Britain,Kiln,Fired grey material recorded in the base of the lowest kiln,ALC,,57.7,1.9,5.6,205,220,"Hammo-Yassi (1983), developed from Aitken (1970)",FALSE,FALSE,The mean magnetic vector was based on less than 8 specimens,"N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Eshott,Northumberland,NZ,195,981,,Medieval,Hearth,heat reddened clay from the hearth was sampled,ESH,,63.6,14.5,3.6,1185,1200,"Hammo-Yassi (1983), developed from Aitken (1970)",FALSE,FALSE,"Archaeological date assigned to the feature was ""c.AD1200"" based on the pottery evidence.","N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Piercebridge,Durham,NZ,213,156,,Roman Britain,Kiln,Red fired clay from the kiln,PIEG,,66.3,356.4,4.4,,,,FALSE,FALSE,"The calibrated direction intersected the calibration curve at AD140 and AD330. The archaeological date assigned to the feature was ""AD140"" based on the associated pottery. The earlier date was thought to be more likely.","N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Prudhoe Castle,Northumberland,NZ,092,634,,Medieval,Hearth,Round hearth with a burnt red edge of soft clay and grey depression.,Hearth A (1502),,64.7,16.2,11.1,1120,1170,"Hammo-Yassi (1983), developed from Aitken (1970)",FALSE,FALSE,"The expected archaeological date assigned to the feature was ""AD1100-1200"". The feature was sampled on two occasions, and the date represents the combination of the samples. The alpha-95 value greatly exceeded the critical value of 5° used in dating","N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Prudhoe Castle,Northumberland,NZ,092,634,,Medieval,Hearth,An elliptical hearth that directly sealed Hearth A (1502),Hearth A'' (1500),,62.4,15.8,5.1,1180,1215,"Hammo-Yassi (1983), developed from Aitken (1970)",FALSE,FALSE,"The expected archaeological date assigned to the feature was ""AD1200-1250"". The mean magnetic vector was based on less than 8 specimens","N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Prudhoe Castle,Northumberland,NZ,092,634,,Medieval,Hearth,Flattish area of reddish soft clay with an irregular shape,Hearth B (1524),,61.7,9.6,3.4,1200,1225,"Hammo-Yassi (1983), developed from Aitken (1970)",FALSE,FALSE,"The expected archaeological date assigned to the feature was ""AD1200-1250"".","N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Prudhoe Castle,Northumberland,NZ,092,634,,Medieval,Hearth,Fired clay surrounded by some bricks,Hearth C (1622/1646),,60.1,8.6,4.4,1240,1260,"Hammo-Yassi (1983), developed from Aitken (1970)",FALSE,FALSE,"The expected archaeological date assigned to the feature was ""AD1250-1300"".","N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Prudhoe Castle,Northumberland,NZ,092,634,,Medieval,Hearth,"Hearth in the corner of the kitchen, surrounded by fired bricks",Hearth D (1327),,60.2,10.8,5.0,1215,1240,"Hammo-Yassi (1983), developed from Aitken (1970)",FALSE,FALSE,"The expected archaeological date assigned to the feature was ""AD1250-1300"". The mean magnetic vector was based on less than 8 specimens","N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Prudhoe Castle,Northumberland,NZ,092,634,,Medieval,Hearth,Nearly circular shaped hearth composed of fired red clay,Hearth E (1402),,62.7,0.3,4.6,,,,FALSE,FALSE,"Calibrated age range fell in the Roman period of the calibration curve. This is not consistent with the expected archaeological age of the feature of ""AD1300"".","N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Prudhoe Castle,Northumberland,NZ,092,634,,Medieval,Area of burning,Fired areas on a stone wall,Wall F (1663),,46.7,347.8,10.2,,,,FALSE,FALSE,The recorded magnetism was very weak indicative of insufficient firing or that the feature had been severely weathered in antiquity. The alpha-95 value greatly exceeded the critical value of 5° used in dating,"N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Red/brown clay-ash material north of the medial wall,OSB AM50,"Archaeomagnetic Research Group, University of Bradford",73.4,339.1,8.5,-240,130,Clark et al. (1988),FALSE,TRUE,"Material friable, three samples broke during sample collection. Two possible age ranges were produced: AD1720-present or 240BC-AD130. The earlier age range was chosen based on the archaeological evidence","Z. Outram (2006) A Reassessment of the Iron Age Chronology of the Northern Isles: a Pilot Study at Old Scatness Broch, Shetland. Unpublished PhD thesis, University of Bradford"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Red-orange ashy material,OSB AM52,"Archaeomagnetic Research Group, University of Bradford",71.8,315.3,4.4,see notes,see notes,Clark et al. (1988),FALSE,TRUE,A date was not produced as the magnetic vector did not lie on the calibration curve,"Z. Outram (2006) A Reassessment of the Iron Age Chronology of the Northern Isles: a Pilot Study at Old Scatness Broch, Shetland. Unpublished PhD thesis, University of Bradford"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Compact yellow/orange ash within hearth,OSB AM56,"Archaeomagnetic Research Group, University of Bradford",68.9,1.1,4.4,90,460,Clark et al. (1988),FALSE,TRUE,"Several age ranges were produced: AD1420-1470, AD1280-1320, AD90-460. The earliest age range was chosen based on the archaeological evidence","Z. Outram (2006) A Reassessment of the Iron Age Chronology of the Northern Isles: a Pilot Study at Old Scatness Broch, Shetland. Unpublished PhD thesis, University of Bradford"
Carlisle,Cumbria,NY,680,563,,Roman Britain,Silt,The pebbley clay at the base of a Roman period ditch,CAR,,61.7,358.7,7.4,185,265,"Hammo-Yassi (1983), developed from Aitken (1970)",FALSE,FALSE,Expected archaeological age for the feature was between AD100-150 based on a coin and the pottery found associated with the ditch.,"N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Bryn Y Castell,Flintshire,SH,728,429,,Iron Age/Roman,Hearth,Hearth,Hearth C (F28),,58.0,4.7,6.7,215,265,"Hammo-Yassi (1983), developed from Aitken (1970)",FALSE,FALSE,The mean magnetic vector was based on less than 8 specimens,"N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Bryn Y Castell,Flintshire,SH,728,429,,Iron Age/Roman,Kiln,Kiln,BRY/E3,,69.0,1.5,2.2,,,,FALSE,FALSE,"Archaeological date assigned to the feature ""AD1-100"". The mean magnetic vector was based on less than 8 specimens","N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Bryn Y Castell,Flintshire,SH,728,429,,Iron Age/Roman,Kiln,Kiln,BRY/G2,,68.8,0.8,1.5,,,,FALSE,FALSE,"Archaeological date assigned to the feature ""AD1-100"". The mean magnetic vector was based on less than 8 specimens","N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Bryn Y Castell,Flintshire,SH,728,429,,Iron Age/Roman,Kiln,Kiln,BRY/G,,70.1,358.6,1.2,,,,FALSE,FALSE,"Archaeological date assigned to the feature ""AD1-100"". The mean magnetic vector was based on less than 8 specimens","N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Bryn Y Castell,Flintshire,SH,728,429,,Iron Age/Roman,Kiln,Kiln,BRY/A,,69.5,1.5,1.5,,,,FALSE,FALSE,"Archaeological date assigned to the feature ""AD1-100""","N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Bryn Y Castell,Flintshire,SH,728,429,,Iron Age/Roman,Kiln,Kiln,BRY/E,,70.6,1.6,2.7,,,,FALSE,FALSE,"Archaeological date assigned to the feature ""AD1-150"". The mean magnetic vector was based on less than 8 specimens","N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Bryn Y Castell,Flintshire,SH,728,429,,Iron Age/Roman,Kiln,Kiln,BRY/F,,69.0,0.0,1.4,,,,FALSE,FALSE,"Archaeological date assigned to the feature ""AD1-200""","N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Bryn Y Castell,Flintshire,SH,728,429,,Iron Age/Roman,Kiln,Kiln,BRY/E2,,69.2,1.0,5.4,,,,FALSE,FALSE,"Archaeological date assigned to the feature ""AD1-200"". The mean magnetic vector was based on less than 8 specimens","N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Bryn Y Castell,Flintshire,SH,728,429,,Iron Age/Roman,Kiln,Kiln,BRY/H,,68.5,357.0,2.0,,,,FALSE,FALSE,"Archaeological date assigned to the feature ""AD1-200"". The mean magnetic vector was based on less than 8 specimens","N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Wharram Percy,North Yorkshire,SE,858,644,The Medieval Village Research Group,Early Medieval/Medieval,Silt,Grey silt layer from section in the dam,WW/VV grey silt,,64.9,326.9,8.2,,,,FALSE,FALSE,The alpha-95 value exceeded the critical value of 5° used in dating,"N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Wharram Percy,North Yorkshire,SE,858,644,The Medieval Village Research Group,Early Medieval/Medieval,Silt,Black silt sampled from the dam section,WW/VV black silt,,73.4,32.4,11.0,,,,FALSE,FALSE,The mean magnetic vector was based on less than 8 specimens and the alpha-95 value exceeded the critical value of 5° used in dating,"N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Wharram Percy,North Yorkshire,SE,858,644,The Medieval Village Research Group,Early Medieval/Medieval,Silt,Silt filling the lower depression on the downstream side of the dam,W176 (WS1-7),,63.7,235.2,6.3,,,,FALSE,FALSE,The mean magnetic vector was based on less than 8 specimens and the alpha-95 value exceeded the critical value of 5° used in dating,"N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Wharram Percy,North Yorkshire,SE,858,644,The Medieval Village Research Group,Early Medieval/Medieval,Silt,"Silt filling a high level depression on to the downstream side of the dam, taken adjacent to samples WS(1-7)",W176 (WS8-10),,69.9,313.1,4.7,,,,FALSE,FALSE,The mean magnetic vector was based on less than 8 specimens,"N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Wharram Percy,North Yorkshire,SE,858,644,The Medieval Village Research Group,Early Medieval/Medieval,Silt,Silt accumulated in the ditch,Ditch silts,,37.7,11.6,14.2,,,,FALSE,FALSE,"Direction did not lie on the calibration curve, but the declination values were consistent with a date of AD1500-1600. The mean magnetic vector was based on less than 8 specimens and the alpha-95 value exceeded the critical value of 5° used in dating","N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Wharram Percy,North Yorkshire,SE,858,644,The Medieval Village Research Group,Early Medieval/Medieval,,Silt sampled from within the section through the pond,KK172,,29.7,13.9,12.4,,,,FALSE,FALSE,The inclination value differed from the expected value by 30° - sediments reworked? The mean magnetic vector was based on less than 8 specimens and the alpha-95 value exceeded the critical value of 5° used in dating.,"N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Wharram Percy,North Yorkshire,SE,858,644,The Medieval Village Research Group,Early Medieval/Medieval,Silt,Coarse brown silt from deposits within the pond,PP/QQ/171,,63.1,14.6,3.9,1060,1180,"Hammo-Yassi (1983), developed from Aitken (1970)",FALSE,FALSE,"Calibrated date was slightly earlier than the expected archaeological age (AD1200-1300), which would require the inclination values to be 5° steeper. The mean magnetic vector was based on less than 8 specimens","N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Wharram Percy,North Yorkshire,SE,858,644,The Medieval Village Research Group,Early Medieval/Medieval,Silt,Silt from deposits within the pond,PP/QQ/171,,67.5,81.8,10.3,,,,FALSE,FALSE,The declination values had been significantly shifted and so a calibrated age could not be produced for these samples. The mean magnetic vector was based on less than 8 specimens and the alpha-95 value exceeded the critical value of 5° used in dating.,"N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Wharram Percy,North Yorkshire,SE,858,644,The Medieval Village Research Group,Early Medieval/Medieval,Silt,Silt deposits within a sump dug to keep the pond site dry. The deposits probably represent the last time that the pond was cleaned,Sump 00/55,,78.6,295.3,17.7,,,,FALSE,FALSE,"The final direction was very scattered, which may suggest the wet conditions of the sump has resulted in sedimentation movements. The alpha-95 value exceeded the critical value of 5° used in dating","N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Coppergate,North Yorkshire,SE,605,518,York Archaeological Trust,Early Medieval/Medieval,Hearth,Fired bricks associated with Hearth 22441,Hearth 22441 bricks,,66.4,6.6,9.2,,,,FALSE,FALSE,"Direction is similar to the late Roman period, which suggests that the bricks were tilted after they were fired. The mean magnetic vector was based on less than 8 specimens and the alpha-95 value exceeded the critical value of 5° used in dating","N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Burrow Hill,Suffolk,TM,390,480,Butley Excavation Group,Early Medieval,Kiln,The kiln walls and floor were sampled,BH,,67.5,11.8,2.5,,,,FALSE,FALSE,,"N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
"Green Lane, Lea",Lincolnshire,SK,833,899,,Roman Britain,Kiln,"The walls, floor, and mouth of a large kiln were sampled",LEA,,68.8,1.9,2.1,,,,FALSE,FALSE,,"N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Craig Phadrig,Highland,NH,640,452,,Iron Age,Area of burning,Vitrified stone from the inner wall of the hillfort at Craig Phadrig,,"Plymouth Environmental Research Centre, University of Plymouth",74.3,353.2,4.6,,,,FALSE,FALSE,"An archaeomagnetic date of ""pre-50BC"" was assigned to the feature","D.Gentles (1989) Archaeomagnetic directional studies of large fired structures in Britain. Unpublished PhD thesis, Plymouth Polytechnic"
Dunnideer,Aberdeenshire,NJ,612,282,,Iron Age,Area of burning,Vitrified stone sampled from the fort,,"Plymouth Environmental Research Centre, University of Plymouth",56.6,349.3,12.3,,,,FALSE,FALSE,Scatter recorded in the sample makes it unreliable to dating purposes. The mean magnetic vector was based on less than 8 specimens and the alpha-95 value exceeded the critical value of 5° used in dating,"D.Gentles (1989) Archaeomagnetic directional studies of large fired structures in Britain. Unpublished PhD thesis, Plymouth Polytechnic"
Dun Skeig,Argyll and Bute,NR,758,572,,Iron Age,Area of burning,Vitrified stone from the north wall of the dun,,"Plymouth Environmental Research Centre, University of Plymouth",64.2,3.7,4.4,100,500,proto-type version of Clark et al. (1988),FALSE,TRUE,,"D.Gentles (1989) Archaeomagnetic directional studies of large fired structures in Britain. Unpublished PhD thesis, Plymouth Polytechnic"
Finavon fort,Angus,NO,507,557,,Iron Age,Area of burning,vitrified stone from the walls of the vitrified fort,,"Plymouth Environmental Research Centre, University of Plymouth",73.4,353.2,2.5,,,,FALSE,FALSE,Calibrated date was consistent with a date prior to 50BC,"D.Gentles (1989) Archaeomagnetic directional studies of large fired structures in Britain. Unpublished PhD thesis, Plymouth Polytechnic"
Knock Farril Fort,Highland,NH,505,585,,Iron Age,Area of burning,Vitrified stone from the wall of the fort,,"Plymouth Environmental Research Centre, University of Plymouth",71.5,357.1,3.8,-50,75,proto-type version of Clark et al. (1988),FALSE,TRUE,"Calibrated age consistent with a 1st millennium BC date, and can tentatively be dated to the late 1st century BC-early 1st century AD","D.Gentles (1989) Archaeomagnetic directional studies of large fired structures in Britain. Unpublished PhD thesis, Plymouth Polytechnic"
Langwell Fort,Highland,NC,410,009,,Iron Age,Area of burning,Vitrified stone from the dun was collected from four locations,,"Plymouth Environmental Research Centre, University of Plymouth",68.7,359.1,2.2,,,,FALSE,FALSE,Calibrated age range thought to be between the 1st centuries BC/AD,"D.Gentles (1989) Archaeomagnetic directional studies of large fired structures in Britain. Unpublished PhD thesis, Plymouth Polytechnic"
Tap o'Noth,Aberdeenshire,NJ,485,293,,Iron Age,Area of burning,Vitrified stones from the north side of the fort were sampled,,"Plymouth Environmental Research Centre, University of Plymouth",68.0,347.3,3.5,,,,FALSE,FALSE,A calibrated age range of the 1st century BC-early 1st century AD was produced. Samples were collected from two locations,"D.Gentles (1989) Archaeomagnetic directional studies of large fired structures in Britain. Unpublished PhD thesis, Plymouth Polytechnic"
Crawcwellt,Ceredigion,SH,665,689,,Iron Age,Furnace,Vitrified stone from the walls of the iron smelting furnace F10,F10,"Plymouth Environmental Research Centre, University of Plymouth",70.4,352.5,4.4,-50,100,proto-type version of Clark et al. (1988),FALSE,TRUE,The mean magnetic vector was based on less than 8 specimens,"D.Gentles (1989) Archaeomagnetic directional studies of large fired structures in Britain. Unpublished PhD thesis, Plymouth Polytechnic"
Crawcwellt,Ceredigion,SH,665,689,,Iron Age,Furnace,Vitrified stone from the walls of furnace F41,F41,"Plymouth Environmental Research Centre, University of Plymouth",78.1,352.2,8.8,,,,FALSE,FALSE,"A Late Iron Age date can be tentatively presented for the feature, but this should be treated with caution due to the small number of specimens included in the calculation of the mean, and the large alpha-95 value","D.Gentles (1989) Archaeomagnetic directional studies of large fired structures in Britain. Unpublished PhD thesis, Plymouth Polytechnic"
Quayside,Tyne and Wear,NZ,253,639,,Post-Medieval,Kiln,Fired bricks from two kilns,,"Plymouth Environmental Research Centre, University of Plymouth",57.3,13.8,5.3,,,,FALSE,FALSE,A calibrated age range of 12th-15th century was produced which was earlier than expected based on the archaeological evidence,"D.Gentles (1989) Archaeomagnetic directional studies of large fired structures in Britain. Unpublished PhD thesis, Plymouth Polytechnic"
Arbeia,Tyne and Wear,NZ,366,679,Tyne and Wear County Council Museum Service,Roman Britain,Kiln,"Baked clay from a kiln: 6 samples from the inner face of one of the arches inside the kiln, and 4 samples from the external sides of the kiln",,"Plymouth Environmental Research Centre, University of Plymouth",62.7,6.9,4.0,,,,FALSE,FALSE,A calibrated age range between the 2nd-5th century AD but this should be taken as tentative; the measured scatter prevents any chronological assessment. The scatter was due to differential movement of different areas of the kiln,"D.Gentles (1989) Archaeomagnetic directional studies of large fired structures in Britain. Unpublished PhD thesis, Plymouth Polytechnic"
Lunt,Warwickshire,SP,206,669,,20th Century,Kiln,The outer walls of the experimental kiln were sampled,,"Plymouth Environmental Research Centre, University of Plymouth",67.2,357.2,2.2,,,,FALSE,FALSE,,"D.Gentles (1989) Archaeomagnetic directional studies of large fired structures in Britain. Unpublished PhD thesis, Plymouth Polytechnic"
Sticker Bypass,Cornwall,SW,970,500,Cornwall County Archaeological Unit,Post-Medieval,Kiln,Burnt clay and ash,,"Plymouth Environmental Research Centre, University of Plymouth",70.1,326.3,3.4,,,,FALSE,FALSE,The alpha-95 value exceeded the critical value of 5° used in dating,"D.H. Tarling & A.L. Abeldayan (1991) Archaeomagnetic results from Sticker kiln, Cornwall. University of Plymouth, unpublished report"
"Rose Cottge, Tyler's Green",Buckinghamshire,SU,907,939,Archaeological Services and Cosultancy,Medieval/Post-Medieval,Kiln,Dark grey vitrified brick sampled from one of the later kilns,1PTG,Ancient Monuments Laboratory,71.9,9.7,4.3,1535,1670,Clark et al. (1988),FALSE,TRUE,"Magnetic directions were scattered, and a range in intensity values were recorded.","P. Linford (2004) Rose Cottage, Tyler's Green, Penn, Buckinghamshire: Archaeomagnetic dating report. Ancient Monuments Laboratory (English Heritage), unpublished report"
"Rose Cottge, Tyler's Green",Buckinghamshire,SU,907,939,Archaeological Services and Cosultancy,Medieval/Post-Medieval,Kiln,Dark grey vitrified bricks sampled from the earlier kiln,2PTG,Ancient Monuments Laboratory,63.6,2.7,1.6,1440,1480,Clark et al. (1988),FALSE,TRUE,Direction lay 4-5° west of the Post-Medieval segment of the calibration curve - the declination values may have been distorted due to the strong magnetisation of the feature. A tentative date of AD1440-1480 was suggested but should be treated with caution,"P. Linford (2004) Rose Cottage, Tyler's Green, Penn, Buckinghamshire: Archaeomagnetic dating report. Ancient Monuments Laboratory (English Heritage), unpublished report"
King's Meadow Lane,Northamptonshire,SP,954,692,Oxford Archaeology,Roman Britain,Kiln,Fired clay and stone from the flue of a grain drier,2HF,Ancient Monuments Laboratory,64.7,0.6,3.6,see notes,see notes,Clark et al. (1988),FALSE,TRUE,Two possible age ranges were produced: AD60-200 or AD280-450. Both are equally likely to be where the true age lies. A distortion correction of +2.4° was applied to the data,"P. Linford (2003) King's Meadow Lane, Higham Ferries, Northamptonshire: Archaeomagnetic dating report. Ancient Monuments Laboratory (English Heritage), unpublished report"
St Peter's Church,Oxfordshire,SP,433,092,Oxford Archaeology,Early Medieval/Medieval,Hearth,Fired stones from a hearth,1EYN,Ancient Monuments Laboratory,61.3,14.2,3.4,1150,1245,Clark et al. (1988),FALSE,TRUE,Tentative date only as based on only 5 specimens from the feature,"P. Linford & N. Linford (1993) St Peter's Church, Eynsham, Oxfordshire: Archaeomagnetic dating report. Ancient Monuments Laboratory (English Heritage), unpublished report"
St Peter's Church,Oxfordshire,SP,433,092,Oxford Archaeology,Early Medieval/Medieval,Hearth,Fired stones from the hearth,2EYN,Ancient Monuments Laboratory,63.6,18.4,3.6,1055,1210,Clark et al. (1988),FALSE,TRUE,,"P. Linford & N. Linford (1993) St Peter's Church, Eynsham, Oxfordshire: Archaeomagnetic dating report. Ancient Monuments Laboratory (English Heritage), unpublished report"
St Peter's Church,Oxfordshire,SP,433,092,Oxford Archaeology,Early Medieval/Medieval,Hearth,"Fired brick, stone and sand from the hearth",3EYN,Ancient Monuments Laboratory,62.0,17.9,4.4,1035,1205,Clark et al. (1988),FALSE,TRUE,The mean vector direction was some distance from the closest point on the calibration curve,"P. Linford & N. Linford (1993) St Peter's Church, Eynsham, Oxfordshire: Archaeomagnetic dating report. Ancient Monuments Laboratory (English Heritage), unpublished report"
"Kwik Save, 49-53 Commerical Road",Herefordshire,SO,515,240,Archenfield Archaeology,Medieval,Furnace,Stone-lined flue with an orange-red fired clay floor,HKS,Ancient Monuments Laboratory,61.1,4.2,2.9,1255,1320,Clark et al. (1988),FALSE,TRUE,Two possible age ranges were produced: 255BC-AD305 or AD1255-1320. Artefact evidence supports the Medieval period age range. A distortion correction of +2.4° was applied to the data,"P. Linford (2001) Kwik Save, 49-53 Commerical Road, Hereford, Herefordshire: Archaeomagnetic dating report. Ancient Monuments Laboratory (English Heritage), unpublished report 93/2001"
St John's School,Somerset,ST,500,390,C & N Hollinrake,Medieval,Furnace,"Sunken feature, possible bell-casting pit: context 150 = red/grey clay floor, context 152 = hard fired clay walls, context 156 = soft red/brown clay from the pedestal, context 202 = well-fired clay from the base of the dome that covered the feature",1GL,Ancient Monuments Laboratory,63.9,20.1,2.2,1050,1135,Clark et al. (1988),FALSE,TRUE,Some anomalous values as some areas of the walls of the feature had slumped,"P. Linford (2003) St John's School, Glastonbury, Somerset: Archaeomagnetic dating report. Ancient Monuments Laboratory (English Heritage), unpublished report"
Burton Dasset,Warwickshire,SU,225,412,,Medieval,Hearth,Ironstone hearth,,Ancient Monuments Laboratory,57.5,3.8,2.7,,,,FALSE,FALSE,,"P. Linford (1990) Burton Dasset, Warwickshire: Archaeomagnetic dating report. Ancient Monuments Laboratory (English Heritage), unpublished report"
Burton Dasset,Warwickshire,SU,225,412,,Medieval,Hearth,Ironstone hearth,,Ancient Monuments Laboratory,62.1,9.1,1.8,,,,FALSE,FALSE,,"P. Linford (1990) Burton Dasset, Warwickshire: Archaeomagnetic dating report. Ancient Monuments Laboratory (English Heritage), unpublished report"
Burton Dasset,Warwickshire,SU,225,412,,Medieval,Hearth,Ironstone hearth,,Ancient Monuments Laboratory,62.1,8.7,1.8,,,,FALSE,FALSE,The mean magnetic vector was based on less than 8 specimens,"P. Linford (1990) Burton Dasset, Warwickshire: Archaeomagnetic dating report. Ancient Monuments Laboratory (English Heritage), unpublished report"
Burton Dasset,Warwickshire,SU,225,412,,Medieval,Hearth,Ironstone hearth,,Ancient Monuments Laboratory,56.9,1.1,2.0,,,,FALSE,FALSE,,"P. Linford (1990) Burton Dasset, Warwickshire: Archaeomagnetic dating report. Ancient Monuments Laboratory (English Heritage), unpublished report"
The Royal Mint,Greater London,TQ,335,805,,Medieval,Hearth,Fired clay from the hearth,Feature 4052,Ancient Monuments Laboratory,60.8,2.1,2.1,,,,FALSE,FALSE,,"P. Linford (1991) Archaeomagnetic dating: the Royal Mint, London. Ancient Monuments Laboratory (English Heritage), unpublished report"
"The National Gallery Extension, Orange Street",Greater London,TQ,264,806,,Medieval,Hearth,Clay hearth,,Ancient Monuments Laboratory,64.0,16.8,2.0,,,,FALSE,FALSE,,"P. Linford (1990) Archaeomagnetic dating: the National Gallery Extension, Orange Street, London. Ancient Monuments Laboratory (English Heritage), unpublished report"
Roxby,Humberside,SU,970,955,,Roman onwards,Area of burning,Burnt clay,,Ancient Monuments Laboratory,66.3,16.8,2.1,,,,FALSE,FALSE,,"P. Linford (1990) Archaeomagnetic dating: Roxby, Humberside. Ancient Monuments Laboratory (English Heritage), unpublished report "
Temple Street,Buckinghamshire,SP,649,139,,Medieval/Post-Medieval,Area of burning,Burnt sand,AJC-14,Ancient Monuments Laboratory,64.6,2.3,4.4,,,,FALSE,FALSE,,"Temple Street, Brill, Buckinghamshire: Measurement AJC-14"
Beadnell,Northumberland,NU,240,287,Northumberland County Council,Medieval,Kiln,Burnt limestone from a circular lime kiln,BEA,GeoQuest Associates,68.4,9.7,1.4,1480,1510,Clark et al. (1988),FALSE,TRUE,,"M. Noel (1995) Archaeomagnetic analysis and dating of a lime kiln at Beadnell, Northumberland. GeoQuest Associates/Ancient Monuments Laboratory, unpublished report"
Probus Bypass,Cornwall,SW,893,475,Cornwall Archaeological Unit,Bronze Age,Area of burning,Burnt clay,,"Plymouth Environmental Research Centre, University of Plymouth",67.1,1.6,16.2,,,,FALSE,FALSE,"The mean magnetic vector was based on less than 8 samples, and a large the alpha-95 value was obtained that exceeded the critical value of 5° used in dating","P. Davis & D.H. Tarling (1997) A report on the Archaeomagnetic sampling at Probus Bypass. University of Plymouth, unpublished report"
The Bowsings,Gloucestershire,SP,086,258,Guiting Manor Amenity Trust,Roman Britain,Oven,Corn drying oven,Feature 5,"Plymouth Environmental Research Centre, University of Plymouth",59.7,351.5,2.9,,,,FALSE,FALSE,"The calibrated age rage of ""AD200-275"" was assigned to the feature (Marshall 1992, Transactions of the Bristol and Gloucestershire Archaeological Society, vol 110: 222). The mean magnetic vector was based on less than 8 specimens","A. Abeldyem et al. (1991) Archaeomagnetic studies of two corn-drying ovens, near Guiting Power, Gloucester. University of Plymouth, unpublished report"
The Bowsings,Gloucestershire,SP,086,258,Guiting Manor Amenity Trust,Roman Britain,Oven,Corn-drying oven,Feature 47,"Plymouth Environmental Research Centre, University of Plymouth",57.5,0.5,4.0,,,,FALSE,FALSE,"A calibrated date of ""AD200-275"" was assigned to the feature (Marshall 1992, Transactions of the Bristol and Gloucestershire Archaeological Society, Vol 110: 222). The mean magnetic vector was based on less than 8 specimens","A. Abeldyem et al. (1991) Archaeomagnetic studies of two corn-drying ovens, near Guiting Power, Gloucester. University of Plymouth, unpublished report"
Bagot's Park,Staffordshire,SK,090,270,,Medieval/Post-Medieval,,Fired orange and grey clay,Furnace 3,Ancient Monuments Laboratory,61.1,8.9,3.0,1420,1485,Clark et al. (1988),FALSE,TRUE,Two possible age ranges were obtained: AD1095-1285 or AD1420-1485. The 15th century date was supported by the documentary evidence relating to the use of the site,"P. Linford & C. Welch (2004) Archaeomagnetic analysis of glassmaking sites at Bagot's Park, Staffordshire, England. Physics of the Earth and Planetary Interiors 147: 209-221"
Bagot's Park,Staffordshire,SK,090,270,,Medieval/Post-Medieval,Furnace,,Furnace 4,Ancient Monuments Laboratory,65.5,12.0,0.5,1470,1550,Clark et al. (1988),FALSE,TRUE,Two possible age ranges were produced: AD1085-1120 or AD1470-1550. The 15th-16th century AD date was supported by the archaeological evidence,"P. Linford & C. Welch (2004) Archaeomagnetic analysis of glassmaking sites at Bagot's Park, Staffordshire, England. Physics of the Earth and Planetary Interiors 147: 209-221"
Bagot's Park,Staffordshire,SK,090,270,,Medieval/Post-Medieval,Furnace,Orange fired clay in a hollow,Furnace 6a,Ancient Monuments Laboratory,56.2,1.5,2.3,1305,1425,Clark et al. (1988),FALSE,TRUE,,"P. Linford & C. Welch (2004) Archaeomagnetic analysis of glassmaking sites at Bagot's Park, Staffordshire, England. Physics of the Earth and Planetary Interiors 147: 209-221"
Bagot's Park,Staffordshire,SK,090,270,,Medieval/Post-Medieval,Furnace,Heated clay remains of the furnace,Furnace 6b,Ancient Monuments Laboratory,59.5,5.5,4.1,1205,1470,Clark et al. (1988),FALSE,TRUE,,"P. Linford & C. Welch (2004) Archaeomagnetic analysis of glassmaking sites at Bagot's Park, Staffordshire, England. Physics of the Earth and Planetary Interiors 147: 209-221"
Bagot's Park,Staffordshire,SK,090,270,,Medieval/Post-Medieval,Furnace,"Red and orange fired clay, and some small fragments of pink sandstone",Furnace 8,Ancient Monuments Laboratory,61.8,10.3,3.1,1430,1535,Clark et al. (1988),FALSE,TRUE,Two possible age ranges were produced for the feature: AD1090-1280 or AD1430-1535. The 15th-16th century date was thought to be more appropriate based on the archaeological evidence,"P. Linford & C. Welch (2004) Archaeomagnetic analysis of glassmaking sites at Bagot's Park, Staffordshire, England. Physics of the Earth and Planetary Interiors 147: 209-221"
Bagot's Park,Staffordshire,SK,090,270,,Medieval/Post-Medieval,Furnace,Hard fired clay,Furnace 9,Ancient Monuments Laboratory,59.1,4.3,6.0,1155,1475,Clark et al. (1988),FALSE,TRUE,The date should be used with caution as it is based on less than 8 specimens,"P. Linford & C. Welch (2004) Archaeomagnetic analysis of glassmaking sites at Bagot's Park, Staffordshire, England. Physics of the Earth and Planetary Interiors 147: 209-221"
Bagot's Park,Staffordshire,SK,090,270,,Medieval/Post-Medieval,Furnace,"Orange-red fired clay, only small areas were well preserved.",Furnace 11b,Ancient Monuments Laboratory,61.5,3.8,4.5,1080,1350,Clark et al. (1988),FALSE,TRUE,Two possible age ranges were produced for the feature: AD1080-1350 or AD1385-1495. Pottery evidence suggests that the 11th-14th century date is more appropriate. Date should be used with caution as it is based on less than 8 specimens,"P. Linford & C. Welch (2004) Archaeomagnetic analysis of glassmaking sites at Bagot's Park, Staffordshire, England. Physics of the Earth and Planetary Interiors 147: 209-221"
Bagot's Park,Staffordshire,SK,090,270,,Medieval/Post-Medieval,Furnace,Heated sandstone and fired clay,Furnace 12,Ancient Monuments Laboratory,60.4,7.5,2.4,1405,1465,Clark et al. (1988),FALSE,TRUE,Two possible age ranges : AD1185-1305 or AD1405-1465. The 15th century date was supported by the archaeological evidence. Furnace 12 was thought to be contemporary with Furnace 3. The mean magnetic vector was based on less than 8 specimens,"P. Linford & C. Welch (2004) Archaeomagnetic analysis of glassmaking sites at Bagot's Park, Staffordshire, England. Physics of the Earth and Planetary Interiors 147: 209-221"
Bagot's Park,Staffordshire,SK,090,270,,Medieval/Post-Medieval,Furnace,Heated clay materials - score marks from ploughing cut the feature into separate sections,Furnace 13a,Ancient Monuments Laboratory,55.5,4.1,4.0,1270,1450,Clark et al. (1988),FALSE,TRUE,,"P. Linford & C. Welch (2004) Archaeomagnetic analysis of glassmaking sites at Bagot's Park, Staffordshire, England. Physics of the Earth and Planetary Interiors 147: 209-221"
Bagot's Park,Staffordshire,SK,090,270,,Medieval/Post-Medieval,Furnace,Fired clay - partially disturbed by the roots of a tree that had been removed in the 1960s,Furnace 13b,Ancient Monuments Laboratory,55.5,359.2,2.1,1315,1420,Clark et al. (1988),FALSE,TRUE,,"P. Linford & C. Welch (2004) Archaeomagnetic analysis of glassmaking sites at Bagot's Park, Staffordshire, England. Physics of the Earth and Planetary Interiors 147: 209-221"
Bagot's Park,Staffordshire,SK,090,270,,Medieval/Post-Medieval,Furnace,Heated clay remains of a furnace,Furnace 13c,Ancient Monuments Laboratory,64.8,7.5,1.6,1455,1550,Clark et al. (1988),FALSE,TRUE,,"P. Linford & C. Welch (2004) Archaeomagnetic analysis of glassmaking sites at Bagot's Park, Staffordshire, England. Physics of the Earth and Planetary Interiors 147: 209-221"
Bagot's Park,Staffordshire,SK,090,270,,Medieval/Post-Medieval,Furnace,Heated clay remains,Furnace 15a,Ancient Monuments Laboratory,60.0,2.5,2.0,1290,1455,Clark et al. (1988),FALSE,TRUE,,"P. Linford & C. Welch (2004) Archaeomagnetic analysis of glassmaking sites at Bagot's Park, Staffordshire, England. Physics of the Earth and Planetary Interiors 147: 209-221"
Bagot's Park,Staffordshire,SK,090,270,,Medieval/Post-Medieval,Furnace,Small area of undisturbed fired clay. The feature was badly damaged by ploughing,Furnace 15b,Ancient Monuments Laboratory,54.5,359.6,4.1,1295,1440,Clark et al. (1988),FALSE,TRUE,,"P. Linford & C. Welch (2004) Archaeomagnetic analysis of glassmaking sites at Bagot's Park, Staffordshire, England. Physics of the Earth and Planetary Interiors 147: 209-221"
Bagot's Park,Staffordshire,SK,090,270,,Medieval/Post-Medieval,Furnace,Fired clay and sandstone were sampled,Furnace 17,Ancient Monuments Laboratory,57.5,7.2,3.6,1235,1450,Clark et al. (1988),FALSE,TRUE,Date should be treated with caution as based on less than 8 specimens,"P. Linford & C. Welch (2004) Archaeomagnetic analysis of glassmaking sites at Bagot's Park, Staffordshire, England. Physics of the Earth and Planetary Interiors 147: 209-221"
Bagot's Park,Staffordshire,SK,090,270,,Medieval/Post-Medieval,Furnace,Fired clay,Furnace 18,Ancient Monuments Laboratory,60.8,14.9,4.6,1430,1560,Clark et al. (1988),FALSE,TRUE,Two possible age range were produced for the feature: AD1090-1310 or AD1430-1560. The 15th-16th century date was through to be more appropriate based on the archaeological evidence,"P. Linford & C. Welch (2004) Archaeomagnetic analysis of glassmaking sites at Bagot's Park, Staffordshire, England. Physics of the Earth and Planetary Interiors 147: 209-221"
2 Coffee Yard,North Yorkshire,SE,520,602,York Archaeological Trust,Medieval,Hearth,"Tiles from the hearth, set into a herringbone formation",H1,GeoQuest Associates,69.1,11.5,1.8,1505,1555,Clark et al. (1988),FALSE,TRUE,,"M. Zhaoqin & M. Noel (1989) Archaeomagnetic evidence for the age and duration of firing of mediaeval hearths from Coffee Yard, York. Geophysics Journal 97: 357-359"
2 Coffee Yard,North Yorkshire,SE,520,602,York Archaeological Trust,Medieval,Hearth,Tile from a hearth set into a herringbone formation,H2,GeoQuest Associates,63.1,5.2,1.6,1420,1460,Clark et al. (1988),FALSE,TRUE,,"M. Zhaoqin & M. Noel (1989) Archaeomagnetic evidence for the age and duration of firing of mediaeval hearths from Coffee Yard, York. Geophysics Journal 97: 357-359"
Eton Rowing Lake,Buckinghamshire,SU,930,780,Oxford Archaeology,Neolithic/Bronze Age,Area of burning,Burnt clay surface of dark yellowish orange and red-brown clay,,Ancient Monuments Laboratory,66.1,3.2,7.2,see notes,see notes,,FALSE,FALSE,No date was obtained due to the paucity of the data available for the Neolithic/Bronze Age periods,"D.H. Tarling & P. Linford (1998) Archaeomagnetic results from Eton College Boating Rowing lake, Dorney, South Buckinghamshire. Ancient Monuments Laboratory (English Heritage), unpublished report"
Springhead,Kent,TQ,601,693,,Roman Britain,Hearth,Clay floor of the hearth was sampled,SPH00,Ancient Monuments Laboratory,61.8,8.1,3.8,see notes,see notes,Clark et al. (1988),FALSE,TRUE,"Three possible age ranges were produced: AD1455-1545, AD1100-1300, and AD200-400. None of these dates agree with the expected age of AD50-100.","P. Linford (2002) Archaeomagnetic dating: Springhead, Kent. Ancient Monuments Laboratory (English Heritage), unpublished report"
Allen's Farm,Kent,TQ,615,530,,Roman Britain,Furnace,Fired tiles and clay were sampled from the tile furnace,PLX,Ancient Monuments Laboratory,63.9,355.2,1.1,120,165,Clark et al. (1988),FALSE,TRUE,,"P. Linford (2002) Archaeomagnetic dating: Allen's Farm, Plaxtol, Kent. Ancient Monuments Laboratory (English Heritage), unpublished report"
Barcombe,East Sussex,TQ,407,131,Mid Sussex Field Archaeological Unit,Roman Britain,Floor,"Fire hardened clay floor of the roundhouse - 4 areas sampled, ranging from bright red, brown/black or yellow/orange clay",BC,Ancient Monuments Laboratory,61.7,358.5,1.7,see notes,see notes,Clark et al. (1988),FALSE,TRUE,Two possible age ranges were produced due to a loop in the calibration curve at this point in time: AD140-200 or AD285-345. The latter date is less probable based on the archaeological evidence,"P. Linford (2002) Archaeomagnetic dating: Barcombe, East Sussex. Ancient Monuments Laboratory (English Heritage), unpublished report"
Cawthorns Camp,North Yorkshire,SE,782,900,Central Excavation Unit,Roman/Early Medieval,Hearth,Hearth or oven dug into the defensive rampart,1CAW,Ancient Monuments Laboratory,69.3,359.4,2.7,-20,125,Clark et al. (1988),FALSE,TRUE,"Date assigned to the feature ""Roman or later""","P. Linford (2001) Archaeomagnetic dating: Cawthorns Camp, Pickering, North Yorkshire. Ancient Monuments Laboratory (English Heritage), unpublished report "
Cawthorns Camp,North Yorkshire,SE,782,900,Central Excavation Unit,Roman/Early Medieval,Hearth,Hearth or oven dug into the defensive rampart,2CAW,Ancient Monuments Laboratory,71.4,358.8,5.3,-200,150,Clark et al. (1988),FALSE,TRUE,"Date assigned to the feature ""Roman or later""","P. Linford (2001) Archaeomagnetic dating: Cawthorns Camp, Pickering, North Yorkshire. Ancient Monuments Laboratory (English Heritage), unpublished report "
Cawthorns Camp,North Yorkshire,SE,782,900,Central Excavation Unit,Roman/Early Medieval,Furnace,Furnace,4CAW,Ancient Monuments Laboratory,69.2,356.4,2.3,-40,125,Clark et al. (1988),FALSE,TRUE,"Date assigned to the feature ""Roman or later""","P. Linford (2001) Archaeomagnetic dating: Cawthorns Camp, Pickering, North Yorkshire. Ancient Monuments Laboratory (English Heritage), unpublished report "
Stanion,Northamptonshire,SP,917,870,Northamptonshire Archaeological and Architectural Society,Roman Britain,Oven,Fired stone and clay were sampled from the flue of the corn drier,2STN,Ancient Monuments Laboratory,68.0,355.5,3.1,-100,105,Clark et al. (1988),FALSE,TRUE,"A distortion correction was applied to the data of 2.4°. The date must be viewed as an estimate as it was not clear why the data should be scattered, or an objective reason why so many of the samples needed to be rejected","P. Linford (2002) Archaeomagnetic dating: Stanion, Corby, Northamptonshire. Ancient Monuments Laboratory (English Heritage), unpublished report"
Worcester Magistrates Court,Worcestershire,SO,840,550,Archaeological Investigations Ltd,Roman Britain,Hearth,Fired clay overlying a clay oven. Represents the collapse of the oven roof and sides,Feature 1265,Ancient Monuments Laboratory,62.1,6.5,2.9,260,320,Clark et al. (1988),FALSE,TRUE,"Less than 8 samples were used in the production of the date, so it should be treated with caution. Two possible age ranges were produced: AD260-320 or 13th-15th century AD. The Roman period date was supported by the archaeological evidence","P. Linford (2002) Archaeomagnetic dating: Worcester Magistrates Court, Worcester, Worcestershire. Ancient Monuments Laboratory (English Heritage), unpublished report"
Worcester Magistrates Court,Worcestershire,SO,840,550,Archaeological Investigations Ltd,Roman Britain,Hearth,Burnt clay,Feature 1304,Ancient Monuments Laboratory,62.4,1.4,3.7,265,410,Clark et al. (1988),FALSE,TRUE,Date should be treated with caution as it was based on less than 8 specimens. Two possible age ranges were produced: AD265-410 or 13th-14th century AD. The Roman period date was supported by the archaeological evidence,"P. Linford (2002) Archaeomagnetic dating: Worcester Magistrates Court, Worcester, Worcestershire. Ancient Monuments Laboratory (English Heritage), unpublished report"
Pipe Aston,Herefordshire,SO,462,722,Dr Allan Peacey,Post-Medieval,Kiln,Samples from the floor of the kiln: 4 samples from bricks and 8 from the fired clay floor,1PA,Ancient Monuments Laboratory,74.3,345.1,2.2,1705,1789,Clark et al. (1988),FALSE,TRUE,Date should be treated with caution as it is based on less than 8 specimens. Low intensity of the samples due to the small size and thinness of the samples,"P. Linford (2000) Pipe Aston, Ludlow, Herefordshire: Archaeomagnetic dating report. Ancient Monuments Laboratory (English Heritage), unpublished report 74/2000"
Pipe Aston,Herefordshire,SO,462,722,Dr Allan Peacey,Post-Medieval,Kiln,Stone (n=8) and fired clay (n=11)  from the base of the kiln,2PA,Ancient Monuments Laboratory,73.9,346.6,2.1,1702,1784,Clark et al. (1988),FALSE,TRUE,A distortion correction of 2.4° was applied to the data,"P. Linford (2000) Pipe Aston, Ludlow, Herefordshire: Archaeomagnetic dating report. Ancient Monuments Laboratory (English Heritage), unpublished report 74/2000"
Shepherd's Wharf,Devon,SX,486,544,Exeter Archaeology,Post-Medieval,Kiln,Bricks from the kiln were sampled,SW,Ancient Monuments Laboratory,73.3,346.5,1.6,1712,1782,Clark et al. (1988),FALSE,TRUE,"1.2° were subtracted from the inclination values following conversion to Meriden, due to a magnetic refraction","P. Linford (2000) Shepherd's Wharf, Plymouth, Devon: Archaeomagnetic dating report. Ancient Monuments Laboratory (English Heritage), unpublished report 73/2000"
31-37 Castle Street,Berkshire,SU,713,732,Thames Valley Archaeology,Medieval,Area of burning,orange sandy clay from an area of burning,CSR,Ancient Monuments Laboratory,64.6,19.6,6.7,900,1223,Clark et al. (1988),FALSE,TRUE,The date should be treated with caution and the alpha-95 value exceeds the critical value used in dating of 5°,"P. Linford (2000) 31-37 Castle Street, Reading, Berkshire: Archaeomagnetic dating. Ancient Monuments Laboratory (English Heritage), unpublished report 75/2000"
Silchester,Hampshire,SU,640,624,Reading University,Roman Britain,Hearth,"white, yellow and orange fired clay, forming a possible hearth",1SIL,Ancient Monuments Laboratory,64.5,2.0,3.0,314,424,Clark et al. (1988),TRUE,FALSE,Two possible age ranges were produced: AD76-141 or AD314-424 (68% confidence). The 4th-5th century AD date was supported by the archaeological evidence,"P. Linford (1998) Insula IX, Silchester, Hampshire: Archaeomagnetic dating report. Ancient Monuments Laboratory (English Heritage), unpublished report"
Silchester,Hampshire,SU,640,624,Reading University,Roman Britain,Hearth,"Area of grey  and pink clay, forming a possible hearth in the centre of Building 1",2SIL,Ancient Monuments Laboratory,61.9,357.3,6.7,267,428,Clark et al. (1988),TRUE,FALSE,Two possible age ranges were produced: AD100-219 or AD267-428 (68% confidence). The later date was supported by the archaeological evidence. The date should be used with caution as the alpha-95 value exceeded the critical value of 5° used in dating,"P. Linford (1998) Insula IX, Silchester, Hampshire: Archaeomagnetic dating report. Ancient Monuments Laboratory (English Heritage), unpublished report"
Silchester,Hampshire,SU,640,624,Reading University,Roman Britain,Hearth,Burnt clay surface with a tile in the centre of the hearth,3SIL,Ancient Monuments Laboratory,61.6,3.4,6.0,261,410,Clark et al. (1988),TRUE,FALSE,Two possible age ranges were produced: AD116-222 or AD261-410 (68% confidence). The later date was supported by the archaeological evidence. The date should be used with caution as the alpha-95 exceeded the critical value of 5° used in dating,"P. Linford (1998) Insula IX, Silchester, Hampshire: Archaeomagnetic dating report. Ancient Monuments Laboratory (English Heritage), unpublished report"
Conder Building,Worcestershire,SO,847,553,Archenfield Archaeology,Roman Britain,Area of burning,An approximately circular area of burning,WCC,Ancient Monuments Laboratory,63.8,3.7,2.7,288,357,Clark et al. (1988),TRUE,FALSE,,"P. Linford (2000) Conder Building, Worcester, Worcestershire: Archaeomagnetic dating report. Ancient Monuments Laboratory (English Heritage), unpublished report "
Deansway Archaeology Project,Worcestershire,SO,840,540,,Early Medieval/Medieval,Area of burning,Burnt surface of fired orange clay,7DAP,Ancient Monuments Laboratory,63.0,18.2,2.0,1100,1165,Clark et al. (1988),FALSE,TRUE,,"P. Linford (2001) Archaeomagnetic dating: Deansway Archaeology Project, Worcester, Worcestershire. Ancient Monuments Laboratory (English Heritage), unpublished report"
Deansway Archaeology Project,Worcestershire,SO,840,540,,Early Medieval/Medieval,Area of burning,Burnt surface of fired orange clay near to a square pit,8DAP,Ancient Monuments Laboratory,57.7,10.9,2.4,1210,1270,Clark et al. (1988),FALSE,TRUE,,"P. Linford (2001) Archaeomagnetic dating: Deansway Archaeology Project, Worcester, Worcestershire. Ancient Monuments Laboratory (English Heritage), unpublished report"
Deansway Archaeology Project,Worcestershire,SO,840,540,,Early Medieval/Medieval,Furnace,Tile furnace - both the tiles and the interstitial dark red/brown clay was sampled,1DAP,Ancient Monuments Laboratory,54.1,1.6,2.9,1370,1420,Clark et al. (1988),FALSE,TRUE,,"P. Linford (2001) Archaeomagnetic dating: Deansway Archaeology Project, Worcester, Worcestershire. Ancient Monuments Laboratory (English Heritage), unpublished report"
Deansway Archaeology Project,Worcestershire,SO,840,540,,Early Medieval/Medieval,Area of burning,Orange/brown burnt earth from beneath feature 1DAP (context 10051),2DAP,Ancient Monuments Laboratory,57.9,349.5,9.2,1255,1475,Clark et al. (1988),FALSE,TRUE,"The date should be treated with caution and the mean was based on less than 8 specimens, and the alpha-95 exceeded the critical value of 5° used in dating","P. Linford (2001) Archaeomagnetic dating: Deansway Archaeology Project, Worcester, Worcestershire. Ancient Monuments Laboratory (English Heritage), unpublished report"
Deansway Archaeology Project,Worcestershire,SO,840,540,,Early Medieval/Medieval,Hearth,Hearth of burnt orange/brown clay with some inclusions of charcoal,3DAP,Ancient Monuments Laboratory,58.2,16.1,5.4,1160,1290,Clark et al. (1988),FALSE,TRUE,Date should be treated with caution as the mean was based on less than 8 specimens,"P. Linford (2001) Archaeomagnetic dating: Deansway Archaeology Project, Worcester, Worcestershire. Ancient Monuments Laboratory (English Heritage), unpublished report"
Deansway Archaeology Project,Worcestershire,SO,840,540,,Early Medieval/Medieval,Oven,Floor of an oven composed of well-fired brown/beige clay,4DAP,Ancient Monuments Laboratory,59.5,12.9,2.5,1175,1260,Clark et al. (1988),FALSE,TRUE,The date should be treated with caution as the feature had settled. A correction was applied to account for this,"P. Linford (2001) Archaeomagnetic dating: Deansway Archaeology Project, Worcester, Worcestershire. Ancient Monuments Laboratory (English Heritage), unpublished report"
Deansway Archaeology Project,Worcestershire,SO,840,540,,Early Medieval/Medieval,Oven,"The original surface of the oven (later surface sampled by 4DAP, context 16135), composed of well-fired orange/brown clay",5DAP,Ancient Monuments Laboratory,62.3,15.0,2.8,1125,1210,Clark et al. (1988),FALSE,TRUE,Date should be treated with caution as the feature had settled and a correction needed to be applied,"P. Linford (2001) Archaeomagnetic dating: Deansway Archaeology Project, Worcester, Worcestershire. Ancient Monuments Laboratory (English Heritage), unpublished report"
Deansway Archaeology Project,Worcestershire,SO,840,540,,Early Medieval/Medieval,Area of burning,Burnt surface of fired brown/black and orange/pink clay,9DAP,Ancient Monuments Laboratory,62.5,16.0,3.3,1105,1210,Clark et al. (1988),FALSE,TRUE,,"P. Linford (2001) Archaeomagnetic dating: Deansway Archaeology Project, Worcester, Worcestershire. Ancient Monuments Laboratory (English Heritage), unpublished report"
Deansway Archaeology Project,Worcestershire,SO,840,540,,Early Medieval/Medieval,Area of burning,Burnt surface of fired sandy brown clay but also incorporating a piece of tile,10DAP,Ancient Monuments Laboratory,65.5,22.8,1.6,1035,1110,Clark et al. (1988),FALSE,TRUE,Date should be treated with caution as the mean is based on less than 8 specimens,"P. Linford (2001) Archaeomagnetic dating: Deansway Archaeology Project, Worcester, Worcestershire. Ancient Monuments Laboratory (English Heritage), unpublished report"
Deansway Archaeology Project,Worcestershire,SO,840,540,,Early Medieval/Medieval,Area of burning,Burnt surface of fired brown clay adjacent to feature 9DAP,11DAP,Ancient Monuments Laboratory,59.2,16.9,4.2,1165,1275,Clark et al. (1988),FALSE,TRUE,,"P. Linford (2001) Archaeomagnetic dating: Deansway Archaeology Project, Worcester, Worcestershire. Ancient Monuments Laboratory (English Heritage), unpublished report"
Deansway Archaeology Project,Worcestershire,SO,840,540,,Early Medieval/Medieval,Hearth,"Hearth below an area of hammerscale, composed of fired clay (beige-orange)",13DAP,Ancient Monuments Laboratory,60.4,355.8,9.7,1170,1550,Clark et al. (1988),FALSE,TRUE,Date should be treated with caution as the alpha-95 value exceeds the critical value of 5° used in dating,"P. Linford (2001) Archaeomagnetic dating: Deansway Archaeology Project, Worcester, Worcestershire. Ancient Monuments Laboratory (English Heritage), unpublished report"
Deansway Archaeology Project,Worcestershire,SO,840,540,,Early Medieval/Medieval,Area of burning,A stone-lined burnt feature composed of orange/brown fired clay,15DAP,Ancient Monuments Laboratory,64.2,12.7,5.2,see notes,see notes,Clark et al. (1988),FALSE,TRUE,Two possible age ranges produced: AD1055-1230 or AD1465-1570. Both age ranges are equally likely and alternative information is required to determine which is more probable,"P. Linford (2001) Archaeomagnetic dating: Deansway Archaeology Project, Worcester, Worcestershire. Ancient Monuments Laboratory (English Heritage), unpublished report"
Deansway Archaeology Project,Worcestershire,SO,840,540,,Early Medieval/Medieval,Area of burning,Substantial burnt clay area sealed beneath a wall,16DAP,Ancient Monuments Laboratory,75.4,13.1,2.5,580,805,Clark et al. (1988),FALSE,TRUE,,"P. Linford (2001) Archaeomagnetic dating: Deansway Archaeology Project, Worcester, Worcestershire. Ancient Monuments Laboratory (English Heritage), unpublished report"
Deansway Archaeology Project,Worcestershire,SO,840,540,,Early Medieval/Medieval,Area of burning,Fired orange clay surface,6DAP,Ancient Monuments Laboratory,58.1,19.8,5.3,1160,1290,Clark et al. (1988),FALSE,TRUE,,"P. Linford (2001) Archaeomagnetic dating: Deansway Archaeology Project, Worcester, Worcestershire. Ancient Monuments Laboratory (English Heritage), unpublished report"
Whitby Abbey Cliff,North Yorkshire,NZ,904,114,Centre for Archaeology,Early Medieval,Hearth,"40818 = mottled orange fire hardened clay; 40870 =brown fire hardened clay, beneath 40818.",6WB,Ancient Monuments Laboratory,75.9,1.0,1.9,570,810,Clark et al. (1988),FALSE,TRUE,"Three possible dates were produced for the feature: Iron Age, 16th century AD or AD570-810. The Early Medieval date was supported by the archaeological evidence. A distortion correction of +2.4° was applied to the data","P. Linford (2002) Whitby Abbey Cliff, Whitby, North Yorkshire: Archaeomagnetic dating report 2002. Ancient Monuments Laboratory (English Heritage), unpublished report 98/2002"
Beeleigh Abbey,Essex,TL,850,071,Essex County Council Field Archaeology Unit,Medieval,Hearth,Central tile hearth in the structure,2BA,Ancient Monuments Laboratory,60.1,9.4,2.0,1450,1505,Clark et al. (1988),FALSE,TRUE,Two possible age ranges: AD1450-1505 or 13th century AD. The 13th century date was discounted based on the archaeological evidence. A distortion correction of +2.4° was applied to the data,"P. Linford (2002) Beeleigh Abbey, Maldon, Essex: Archaeomagnetic dating report 2002. Ancient Monuments Laboratory (English Heritage), unpublished report 108/2002"
Beeleigh Abbey,Essex,TL,850,071,Essex County Council Field Archaeology Unit,Medieval,Hearth,Large central tile hearth: tiles stacked vertically,3BA,Ancient Monuments Laboratory,56.4,11.3,1.8,1225,1265,Clark et al. (1988),FALSE,TRUE,A distortion correction of +2.4° was applied to the data,"P. Linford (2002) Beeleigh Abbey, Maldon, Essex: Archaeomagnetic dating report 2002. Ancient Monuments Laboratory (English Heritage), unpublished report 108/2002"
Beeleigh Abbey,Essex,TL,850,071,Essex County Council Field Archaeology Unit,Medieval,Hearth,Tile hearth with tiles laid diagonally to form a lozenge shape,4BA,Ancient Monuments Laboratory,62.0,7.2,2.7,1445,1525,Clark et al. (1988),FALSE,TRUE,Two possible date ranges: late 15th century AD or late 12th-13th centuries AD. Expected archaeological date = 13th century. A distortion correction +2.4° was applied to the data,"P. Linford (2002) Beeleigh Abbey, Maldon, Essex: Archaeomagnetic dating report 2002. Ancient Monuments Laboratory (English Heritage), unpublished report 108/2002"
9-10 The Tything,Worcestershire,SO,848,555,Worcestershire Archaeological Services,Medieval,Kiln,"Tiles sampled from the internal face of the kiln, and a brick sampled from the kiln floor",1TYW,Ancient Monuments Laboratory,59.6,5.9,1.2,see notes,see notes,Clark et al. (1988),FALSE,TRUE,Two possible age ranges were produced: AD1260-1290 or AD1440-1480,"P. Linford (2003) 9-10 The Tything, Worcester: Archaeomagnetic dating report 2003. Ancient Monuments Laboratory (English Heritage), unpublished report 5/2003"
9-10 The Tything,Worcestershire,SO,848,555,Worcestershire Archaeological Services,Medieval,Kiln,Tiles at the based of the blocked flue arches on the exterior face of the kiln wall,2TYW,Ancient Monuments Laboratory,59.8,6.1,2.2,see notes,see notes,Clark et al. 1988,FALSE,TRUE,Two possible age ranges were produced: AD1250-1300 or AD1425-1495,"P. Linford (2003) 9-10 The Tything, Worcester: Archaeomagnetic dating report 2003. Ancient Monuments Laboratory (English Heritage), unpublished report 5/2003"
Ickham Court Farm,Kent,TR,221,581,Cantebury Archaeological Trust,Medieval,Hearth,purple/brown fired clay in an approximately circular feature on the surface of the floor within the sunken floored structure,ICK,Ancient Monuments Laboratory,63.0,18.2,1.3,1115,1160,Clark et al. 1988,FALSE,TRUE,A distortion correction of +2.4° was applied to the data,"P. Linford (2002) Ickham Court Farm, Ickham, Kent: Archaeomagnetic dating report 2002. Ancient Monuments Laboratory (English Heritage), unpublished report 97/2002"
Tyler Hill,Kent,TR,146,602,Time Team,Medieval,Kiln,"Tile kiln constructed on stacked tiles mortared together with fired clay. Samples were collected from the arch inside the kiln, the floor layer on top of the line of arches, and the west and north wall of the kiln",TH,Ancient Monuments Laboratory,57.9,9.7,1.9,1238,1286,Clark et al. (1988),FALSE,TRUE,"Feature had slumped so bedding correction was applied: strike 61.9°, dip 5.5° accounted for the movement of the feature. The uncorrected values for the feature are: declination 5.0°, inclination 53.4°.","P. Linford (2000) Archaeomagnetic dating: Tyler Hill, Canterbury, Kent. Ancient Monuments Laboratory (English Heritage), unpublished report 83/2000"
Noak Hill,Essex,TQ,534,941,Rochford Hundred Archaeological Society,Medieval,Kiln,"A rectangular kiln constructed of stacked tiles. Material sampled included the orange clay above the flue, red clay in between the tiles in the walls and some of the tiles",NK,Ancient Monuments Laboratory,55.3,358.6,2.2,1365,1405,Clark et al. (1988),FALSE,TRUE,"The south and part of the east wall had slumped - the samples from these areas were excluded from the analysis. The clay above the flue was reddened, but had not been exposed to sufficiently high temperatures to remagnetise","P. Linford (2001) Archaeomagnetic dating: Noak Hill, Havering, Essex. Ancient Monuments Laboratory (English Heritage), unpublished report 1/2001"
Tesco Site,Conwy,SN,910,681,Earthworks,Medieval,Hearth,Burnt clay from domestic hearth,ABE,GeoQuest Associates,59.7,2.4,2.9,see notes,see notes,Clark et al. 1988,FALSE,TRUE,Two possible age ranges were produced: AD1275-1330 or AD1400-1430,"M. Noel (2003) Archaeomagnetic analysis of burnt contexts 025 and 026 at Tesco site, Abergele. GeoQuest Associates, unpublished report"
Buckley,Flintshire,SJ,272,642,Earthworks Archaeological Service,Post-Medieval,Hearth,Sub-circular area of burnt clay and soil,BUC,GeoQuest Associates,74.5,357.6,1.5,see notes,see notes,Clark et al. (1988),FALSE,TRUE,Magnetic vector did not overlap with the calibration curve. The vector had to be extrapolated to return a tentative date of AD1660-1690.,"M. Noel (2000) Archaeomagnetic study of hearth context 104, Buckley, Flintshire. GeoQuest Associates, unpublished report"
Cwmystwyth,Ceredigion,SN,809,750,Early Mines Research Group,Medieval,Hearth,Lead smelting hearth,,"Archaeomagnetic Research Group, University of Bradford",56.8,354.2,19.1,see notes,see notes,,FALSE,FALSE,"This should not be used for dating as the alpha-95 value exceeds the critical value of 5° used in dating, and the mean is based on less than 8 specimens. A calibrated date was therefore not produced","A.J. Powell (2003) Archaeomagnetic dating of a lead smelting hearth excavated at Penguelan, Cwmystwyth. Archaeomagnetic Research Group, University of Bradford, unpublished report BR03-AM104"
Grimstone End,Suffolk,TL,910,706,,Roman Britain,Area of burning,,,,65.7,357.0,1.7,,,,FALSE,FALSE,,"E. Thellier (1981) Sur la direction du champ magnetique terrestre, en France durant les deux dernieres millenaires. Physics of the Earth and Planetary Interiors 24: 89-132"
Quayside,Tyne and Wear,NZ,322,563,,Medieval,Oven,Oven,,,61.9,18.9,3.0,,,,FALSE,FALSE,,"D. Najid (1986) Palaeomagnetic studies in Morocco. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Quayside,Tyne and Wear,NZ,322,563,,Medieval,Oven,Oven,,,55.3,355.7,3.1,,,,FALSE,FALSE,,"D. Najid (1986) Palaeomagnetic studies in Morocco. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Quayside,Tyne and Wear,NZ,322,563,,Medieval,Oven,Oven,,,61.9,3.6,3.6,,,,FALSE,FALSE,,"D. Najid (1986) Palaeomagnetic studies in Morocco. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Church Close,Cleveland,NZ,526,338,Cleveland County Archaeological Section,Medieval,Hearth,Hearth,211,,59.5,4.0,2.9,,,,FALSE,FALSE,Date should be treated with caution as mean based on less than 8 specimens,"D. Najid (1986) Palaeomagnetic studies in Morocco. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Church Close,Cleveland,NZ,526,338,Cleveland County Archaeological Section,Medieval,Oven,Oven,187,,57.0,5.1,3.0,,,,FALSE,FALSE,,"D. Najid (1986) Palaeomagnetic studies in Morocco. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Church Close,Cleveland,NZ,526,338,Cleveland County Archaeological Section,Medieval,Oven,Oven,620,,59.1,359.3,4.1,,,,FALSE,FALSE,Date should be treated with caution as based on less than 8 specimens,"D. Najid (1986) Palaeomagnetic studies in Morocco. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Church Close,Cleveland,NZ,526,338,Cleveland County Archaeological Section,Medieval,Oven,Oven,205,,61.1,1.4,8.1,,,,FALSE,FALSE,Date should be treated with caution as the mean is based on less than 8 specimens and the alpha-95 value exceeded the critical value of 5° used in dating,"D. Najid (1986) Palaeomagnetic studies in Morocco. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Church Close,Cleveland,NZ,526,338,Cleveland County Archaeological Section,Medieval,Oven,Oven,595,,58.0,358.0,6.6,,,,FALSE,FALSE,Date should be treated with caution as the mean is based on less than 8 specimens and the alpha-95 value exceeded the critical value of 5° used in dating,"D. Najid (1986) Palaeomagnetic studies in Morocco. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Church Close,Cleveland,NZ,526,338,Cleveland County Archaeological Section,Medieval,Oven,Oven,523,,60.4,9.0,3.8,,,,FALSE,FALSE,Date should be treated with caution as the mean is based on less than 8 specimens,"D. Najid (1986) Palaeomagnetic studies in Morocco. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Steel Rigg,Northumberland,NY,680,563,,Roman onwards,Hearth,Hearth,ST/A,,66.1,10.5,2.2,,,,FALSE,FALSE,Date should be treated with caution as the mean is based on less than 8 specimens,"N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Steel Rigg,Northumberland,NY,680,563,,Roman onwards,Area of burning,Burnt bricks,ST/B,,67.6,10.2,1.6,,,,FALSE,FALSE,Date should be treated with caution as the mean is based on less than 8 specimens,"N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Steel Rigg,Northumberland,NY,680,563,,Roman onwards,Area of burning,Burnt clay,ST/C,,65.8,359.4,1.4,,,,FALSE,FALSE,Date should be treated with caution as the mean is based on less than 8 specimens,"N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Steel Rigg,Northumberland,NY,680,563,,Roman onwards,Area of burning,Burnt wall,ST/D,,66.1,359.4,1.4,,,,FALSE,FALSE,Date should be treated with caution as the mean is based on less than 8 specimens,"N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Lincoln,Lincolnshire,TF,070,682,,Roman Britain,Silt,Silt,LIN silt,,66.3,11.6,4.8,,,,FALSE,FALSE,Date should be treated with caution as the mean is based on less than 8 specimens,"N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Lincoln,Lincolnshire,TF,070,682,,Roman Britain,Area of burning,Baked clay,LIN baked clay,,72.5,10.6,7.1,,,,FALSE,FALSE,Date should be treated with caution as the mean is based on less than 8 specimens and the alpha-95 value exceeded the critical value of 5° used in dating,"N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Bridge Abuttment,Northumberland,NY,680,562,,Roman Britain,Hearth,Hearth,RBA,,62.2,0.2,1.2,,,,FALSE,FALSE,,"N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Wallsend,Tyne and Wear,NZ,258,562,,Roman Britain,Hearth,Hearth,WALL,,66.1,1.2,1.2,,,,FALSE,FALSE,,"N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Wallsend,Tyne and Wear,NZ,258,562,,Roman Britain,Hearth,Hearth,WAL/2,,65.2,1.7,1.3,,,,FALSE,FALSE,,"N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Roman wall,Tyne and Wear,NY,680,563,,Roman Britain,Hearth,Hearth,RM1,,65.9,356.6,1.8,,,,FALSE,FALSE,,"N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Roman wall,Tyne and Wear,NY,680,563,,Roman Britain,Hearth,Hearth,RM2,,64.7,356.1,3.6,,,,FALSE,FALSE,Date should be treated with caution as the mean was based on less than 8 specimens,"N.B. Hammo-Yassi (1983) Archaeomagnetic work in Britain and Iraq. Unpublished PhD thesis, University of Newcastle-upon-Tyne"
Trelystan,Powys,SJ,256,008,,Bronze Age,Hearth,Hearth,TRE,Ancient Monuments Laboratory,60.1,358.5,2.6,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Winchester,Hampshire,SU,561,337,,Bronze Age,Area of burning,Burnt soil,M3R4/3,Ancient Monuments Laboratory,70.5,8.7,7.3,,,,FALSE,FALSE,Date should be treated with caution as the mean is based on less than 8 specimens,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Thanet,Kent,TR,371,611,,Bronze Age,Silt,Ditch sediments from the inner ditch,THAID,Ancient Monuments Laboratory,78.1,37.3,20.8,,,,FALSE,FALSE,The alpha-95 value exceeded the critical value of 5° used in dating,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Thanet,Kent,TR,371,611,,Bronze Age,Silt,Ditch sediments from the middle ditch,THAMD,Ancient Monuments Laboratory,68.8,6.9,13.7,,,,FALSE,FALSE,The alpha-95 value exceeded the critical value of 5° used in dating,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Thanet,Kent,TR,371,611,,Bronze Age,Silt,Ditch sediments from the outer ditch,THAOD,Ancient Monuments Laboratory,70.4,16.8,9.6,,,,FALSE,FALSE,The alpha-95 value exceeded the critical value of 5° used in dating,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Rainham,Greater London,TQ,528,802,,Iron Age,Silt,Ditch sediments,RAI/M,Ancient Monuments Laboratory,64.9,3.1,11.3,,,,FALSE,FALSE,The alpha-95 value exceeded the critical value of 5° used in dating,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Redcliff Farm,Dorset,SY,934,867,,Roman Britain,Kiln,Clamp kiln for pottery,RED,Ancient Monuments Laboratory,63.7,7.8,2.6,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Binchester,Durham,NZ,209,313,,Roman Britain,Hearth,Hearth,BIN1,Ancient Monuments Laboratory,69.9,2.4,5.4,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Binchester,Durham,NZ,209,313,,Roman Britain,Kiln,Kiln,BIN2,Ancient Monuments Laboratory,67.3,0.7,4.0,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Binchester,Durham,NZ,209,313,,Roman Britain,Hearth,Hearth,BIN3,Ancient Monuments Laboratory,55.9,351.8,4.9,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Carlisle,Cumbria,NY,424,565,,Roman Britain,Kiln,Kiln,CAR1,Ancient Monuments Laboratory,68.8,19.8,6.4,,,,FALSE,FALSE,Date should be treated with caution as the mean is based on less than 8 specimens and the alpha-95 value exceeded the critical value of 5° used in dating,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Great Holme Street,Leicestershire,SP,554,004,Leicestershire Archaeological Field Unit,Roman Britain,Kiln,Kiln,GHS1,Ancient Monuments Laboratory,66.9,5.1,2.5,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Great Holme Street,Leicestershire,SP,554,004,Leicestershire Archaeological Field Unit,Roman Britain,Area of burning,,GHS2,Ancient Monuments Laboratory,68.8,15.1,2.4,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Jarvis Brook,East Sussex,TQ,545,246,,Roman Britain,Hearth,Hearth,JAR,Ancient Monuments Laboratory,60.7,352.7,7.2,,,,FALSE,FALSE,Alpha-95 value exceeds the critical value of 5° used in dating and should be treated with caution,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Orsett,Essex,TQ,667,806,,Roman Britain,Kiln,Kiln,ORS,Ancient Monuments Laboratory,62.8,2.4,3.1,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Neatham,Hampshire,SU,740,410,North East Hampshire Archaeological Society,Roman Britain,Hearth,Floor of the hearth associated with Oven 1 were sampled,NEA,Ancient Monuments Laboratory,64.2,356.7,1.9,see notes,see notes,,FALSE,TRUE,"Two possible age ranges were produced for the feature: AD110-150 or AD320-350. Neither of these dates agree with the typological date obtained from the pottery associated with the oven, which suggests a mid-3rd century AD date.","A.J. Clark (1986) Archaeomagnetic measurements on Oven 1. In M. Millet & D. Graham (eds.) Excavations on the Romano-British small town at Neatham, Hampshire 1969-1979. Hampshire Field Club and Archaeological Society: Gloucester, Microfiche M1/3"
Rainham,Greater London,TQ,528,802,,Iron Age,Hearth,Hearth,LAU,Ancient Monuments Laboratory,63.0,356.4,4.2,,,,FALSE,FALSE,The mean magnetic vector was based on less than 8 specimens,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Walton le Dale,Lancashire,SD,539,228,,Early Medieval,Silt,Silt,WLD3,Ancient Monuments Laboratory,78.5,347.4,15.0,,,,FALSE,FALSE,Alpha-95 value greatly exceeds the critical value of 5° used in dating and so this date should be used with caution,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Jarrow Priory,Tyne and Wear,NZ,338,651,,Early Medieval,Furnace,Furnace,JAR,Ancient Monuments Laboratory,63.7,15.4,1.2,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Hamwih,Hampshire,SU,425,120,,Early Medieval,Hearth,Hearth,HAM1,Ancient Monuments Laboratory,71.5,40.5,0.7,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
London,Greater London,TQ,323,685,,Early Medieval,Hearth,Hearth,TAV82,Ancient Monuments Laboratory,70.3,24.4,0.9,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Dan y Coed,,NS,248,643,,Early Medieval/Medieval,Hearth,Hearth,DAN,Ancient Monuments Laboratory,62.8,9.8,5.2,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
"44-48 Bow Lane, Well Court",Greater London,TQ,324,811,Department of Greater London Archaeology,Early Medieval,Hearth,Hearth,BOW,Ancient Monuments Laboratory,70.3,33.7,2.0,950,1000,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Reigate,Surrey,TQ,259,461,,Early Medieval/Medieval,Hearth,Hearth,RE1,Ancient Monuments Laboratory,58.5,24.8,12.1,,,,FALSE,FALSE,The alpha-95 value greatly exceeds the critical value of 5° used in dating and therefore should be used with caution,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Swan Lane,Greater London,TQ,327,807,Museum of London Department of Urban Archaeology,Medieval,Hearth,Hearth construcuted of vertically pitched tiles - part of a series of 6 superimposed hearths that were sampled (hearth 1),SWA1,Ancient Monuments Laboratory,44.2,19.0,2.3,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Swan Lane,Greater London,TQ,327,807,Museum of London Department of Urban Archaeology,Medieval,Hearth,Hearth constructed of vertically pitched tiles - part of a series of 6 superimposed hearths that were sampled (hearth 2),SWA2,Ancient Monuments Laboratory,62.3,22.5,2.4,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Swan Lane,Greater London,TQ,327,807,Museum of London Department of Urban Archaeology,Medieval,Hearth,Hearth constructed of vertically pitched tiles - part of a series of 6 superimposed hearths that were sampled (hearth 3),SWA3,Ancient Monuments Laboratory,57.4,0.0,10.0,,,,FALSE,FALSE,The alpha-95 value greatly exceeded the critical value of 5° used in dating and should therefore be treated with caution,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Swan Lane,Greater London,TQ,327,807,Museum of London Department of Urban Archaeology,Medieval,Hearth,Hearth constructed of vertically pitched tiles - part of a series of 6 superimposed hearths that were sampled (hearth 4),SWA4,Ancient Monuments Laboratory,61.5,13.1,1.7,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Swan Lane,Greater London,TQ,327,807,Museum of London Department of Urban Archaeology,Medieval,Hearth,Hearth constructed of vertically pitched tiles - part of a series of 6 superimposed hearths that were sampled (hearth 5),SWA5,Ancient Monuments Laboratory,63.6,10.3,1.9,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Swan Lane,Greater London,TQ,327,807,Museum of London Department of Urban Archaeology,Medieval,Hearth,Hearth constructed of vertically pitched tiles - part of a series of 6 superimposed hearths that were sampled. SWA6 represents the earliest in the sequence (hearth 6),SWA6,Ancient Monuments Laboratory,57.4,7.1,2.2,,,,FALSE,FALSE,The date should be treated with caution as the mean is based on less than 8 specimens,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
The Black Gate,Tyne and Wear,NZ,250,637,Newcastle City Archaeological unit,Medieval,Hearth,Hearth,BLG,Ancient Monuments Laboratory,57.5,6.2,4.0,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Castle Acre,Norfolk,TF,819,151,Norfolk Archaeological Unit,Medieval,Silt,Middle layer of silt from the diverted channel,CAS916,Ancient Monuments Laboratory,69.8,349.7,5.1,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Castle Acre,Norfolk,TF,819,151,Norfolk Archaeological Unit,Medieval,Silt,Silt from the diverted channel,CAS1/8,Ancient Monuments Laboratory,72.3,345.8,,,,,FALSE,FALSE,No alpha-95 value was provided,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Castle Acre,Norfolk,TF,819,151,Norfolk Archaeological Unit,Medieval,Silt,Silt from the bottom layer of the diverted channel,CAS17,Ancient Monuments Laboratory,70.4,353.3,,,,,FALSE,FALSE,No alpha-95 values were provided,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Pippingford,East Sussex,TQ,471,355,,Medieval,Furnace,Bloomery furnace,PIP/B,Ancient Monuments Laboratory,65.2,5.8,4.0,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
St Johns Priory,West Yorkshire,SE,463,226,Pontefract Archaeological Society,Medieval,Hearth,Hearth,PON,Ancient Monuments Laboratory,57.3,12.6,9.0,,,,FALSE,FALSE,The alpha-95 value greatly exceeded the critical value of 5° used in dating and should therefore be treated with caution,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Carrickfergus,County Antrim,NW,729,061,,Medieval,Kiln,Pottery kiln,CARR,Ancient Monuments Laboratory,61.7,12.8,3.6,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Newbury,Berkshire,SU,488,670,,Medieval,Hearth,Pitched tile hearth,NEW/1,Ancient Monuments Laboratory,55.0,4.2,6.8,,,,FALSE,FALSE,Alpha-95 value exceeds the critical value of 5° used in dating and therefore should be used with caution,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Newbury,Berkshire,SU,488,670,,Medieval,Hearth,Pitched tile hearth,NEW/2,Ancient Monuments Laboratory,58.3,357.9,2.3,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Newbury,Berkshire,SU,488,670,,Medieval,Hearth,Clay hearth,NEW/3,Ancient Monuments Laboratory,59.7,8.6,4.6,,,,FALSE,FALSE,Date should be treated with caution as the mean is based on less than 8 specimens,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Newbury,Berkshire,SU,488,670,,Medieval,Hearth,Pitched tile hearth,NEW/4,Ancient Monuments Laboratory,63.2,6.0,2.8,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Newbury,Berkshire,SU,488,670,,Medieval,Hearth,Pitched tile hearth,NEW/5,Ancient Monuments Laboratory,57.4,345.6,3.2,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Bedern,North Yorkshire,SE,604,531,York Archaeological Trust,Medieval,Hearth,Hearth,BED2,Ancient Monuments Laboratory,52.0,358.3,6.5,,,,FALSE,FALSE,The alpha-95 value exceeds the critical value of 5° used in dating and should therefore be used with caution,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Tintern Abbey,Monmouthshire,SO,533,000,,Medieval,Furnace,,T1,Ancient Monuments Laboratory,58.4,5.5,4.6,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Wakefield,West Yorkshire,SE,331,227,,Medieval,Floor,Burnt clay floor,SA,Ancient Monuments Laboratory,65.7,4.0,3.2,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Langley Burrell,Wiltshire,ST,928,754,,Medieval/Post-Medieval,Kiln,Pottery kiln,LAN,Ancient Monuments Laboratory,54.5,351.4,5.1,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Farnborough,Hampshire,SU,907,564,,Post-Medieval,Kiln,Kiln,SL2(3),Ancient Monuments Laboratory,66.6,354.0,6.0,,,,FALSE,FALSE,Alpha-95 value exceeded the critical value of 5° used in dating and should therefore be used with caution,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Allensford Blast Furnace,Northumberland,NZ,079,503,,Post-Medieval,Furnace,Blast furnace,ALL,Ancient Monuments Laboratory,76.7,340.8,1.2,,,,FALSE,FALSE,The 'Keys to the Past' website states that the archaeomagnetic date on the furnace produced a date of AD1730-1750 (http://www.keystothepast.info/durhamcc/K2P.nsf/K2PDetail?readform&PRN=N9914),"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Danyatt,Somerset,ST,331,134,,Post-Medieval,Kiln,Pottery kiln,DON1,Ancient Monuments Laboratory,73.5,341.7,4.5,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Danyatt,Somerset,ST,331,134,,Post-Medieval,Kiln,Pottery Kiln,DON2,Ancient Monuments Laboratory,79.2,21.2,2.5,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Millmead,Surrey,SU,979,455,,Post-Medieval,Silt,River silt deposits,MIL1,Ancient Monuments Laboratory,69.5,353.3,8.5,,,,FALSE,FALSE,The alpha-95 value exceeds the critical value of 5° used in dating and should therefore be used with caution,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Whitby Abbey Cliff,North Yorkshire,NZ,904,114,Centre for Archaeology,Early Medieval,Hearth,Very well baked clay surface with impressions of plant fibres in corner of the kerbed area,1WB,Ancient Monuments Laboratory,77.2,6.9,1.8,560,810,Clark et al. (1988),FALSE,TRUE,,"P. Linford (2001) Whitby Abbey cliff, North Yorkshire: Archaeomagnetic dating report. Ancient Monuments Laboratory (English Heritage), unpublished report 94/2001"
Whitby Abbey Cliff,North Yorkshire,NZ,904,114,Centre for Archaeology,Early Medieval,Hearth,Area of fired clay and reddened sandstone above the earlier ditch fill,2WB,Ancient Monuments Laboratory,69.6,30.4,3.6,920,1085,Clark et al. (1988),FALSE,TRUE,Date should be used with caution as the mean is based on less than 8 specimens. Two possible age ranges produced: AD920-1085 or 600-400BC. The archaeological evidence supported the 10th-11th century AD date.,"P. Linford (2001) Whitby Abbey cliff, North Yorkshire: Archaeomagnetic dating report. Ancient Monuments Laboratory (English Heritage), unpublished report 94/2001"
Whitby Abbey Cliff,North Yorkshire,NZ,904,114,Centre for Archaeology,Early Medieval,Hearth,Earlier fired clay surface beneath 1WB,3WB,Ancient Monuments Laboratory,75.6,22.9,3.1,560,850,Clark et al. (1988),FALSE,TRUE,Two possible age ranges: AD560-850 or 535-200BC. The Early Medival date was supported by the archaeological evidence.,"P. Linford (2001) Whitby Abbey cliff, North Yorkshire: Archaeomagnetic dating report. Ancient Monuments Laboratory (English Heritage), unpublished report 94/2001"
Whitby Abbey Cliff,North Yorkshire,NZ,904,114,Centre for Archaeology,Early Medieval,Hearth,Burnt clay patches in kerbed area,4WB,Ancient Monuments Laboratory,76.3,6.8,2.5,560,825,Clark et al. (1988),FALSE,TRUE,,"P. Linford (2001) Whitby Abbey cliff, North Yorkshire: Archaeomagnetic dating report. Ancient Monuments Laboratory (English Heritage), unpublished report 94/2001"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Hearth inlcuding red ash and charcoal,OSB AM16,"Archaeomagnetic Research Group, University of Bradford",74.7,22.4,6.8,780,890,Clark et al. (1988),FALSE,TRUE,"Three possible age ranges were produced: AD1500-1600, AD780-890 and AD500-600. The AD780-890 range was supported by a radiocarbon date from the same deposit. The alpha-95 value exceeded the critical value used in dating and should be used with caution","Z. Outram & C.M. Batt (in press) Dating at Old Scatness. In Dockrill et al. (eds.) Excavations at Old Scatness, Shetland, Volume 1: The Pictish and Viking Settlement. Shetland Heritage Publications, Lerwick"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Fire cracked stone and ash of the hearth,OSB AM17 and AM20,"Archaeomagnetic Research Group, University of Bradford",74.4,16.2,7.0,,,,FALSE,FALSE,Information based on the NRM values only. Direction indicates feature could tentatively date to the 1st century AD but the mean magnetic vector was based on less than 8 specimens and the alpha-95 value exceeded the critical value of 5° used in dating,"Z. Outram (2006) A Reassessment of the Iron Age Chronology of the Northern Isles: a Pilot Study at Old Scatness Broch, Shetland. Unpublished PhD thesis, University of Bradford"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Orange/red area of burning in the SW cell of the structure,OSB AM19,"Archaeomagnetic Research Group, University of Bradford",74.7,21.2,6.8,see notes,see notes,Clark et al. (1988),FALSE,TRUE,"Three possible age ranges were produced: AD1500-1630, AD790-1130 or AD470-730. The alpha-95 value exceeded the critical value used in dating and should therefore be used with caution","Z. Outram & C.M. Batt (in press) Dating at Old Scatness. In Dockrill et al. (eds.) Excavations at Old Scatness, Shetland, Volume 1: The Pictish and Viking Settlement. Shetland Heritage Publications, Lerwick"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Fired clay laying on top of cracked hearth stone,OSB AM21,"Archaeomagnetic Research Group, University of Bradford",72.7,9.8,5.6,-150,170,Clark et al. (1988),FALSE,TRUE,Information based on the NRM values only - the date should be used with caution as based on less than 8 specimens,"Z. Outram (2006) A Reassessment of the Iron Age Chronology of the Northern Isles: a Pilot Study at Old Scatness Broch, Shetland. Unpublished PhD thesis, University of Bradford"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Orange area of burning in the NW part of the hearth,OSB AM22,"Archaeomagnetic Research Group, University of Bradford",70.0,0.0,2.3,-100,90,Clark et al. (1988),FALSE,TRUE,Two possible age ranges were produced: AD1850-present or 100BC-AD90. The modern date was discounted based on the archaeological evidence,"Z. Outram (2006) A Reassessment of the Iron Age Chronology of the Northern Isles: a Pilot Study at Old Scatness Broch, Shetland. Unpublished PhD thesis, University of Bradford"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Orange area of burning in the SE area of the hearth,OSB AM23,"Archaeomagnetic Research Group, University of Bradford",355.6,73.1,4.0,-150,150,Clark et al. (1988),FALSE,TRUE,Two possible age ranges were produced: AD1625-1700 or 150BC-AD150. The Post-Medieval period date was discounted based on the archaeological evidence,"Z. Outram (2006) A Reassessment of the Iron Age Chronology of the Northern Isles: a Pilot Study at Old Scatness Broch, Shetland. Unpublished PhD thesis, University of Bradford"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Interior of the formal central hearth,OSB AM24,"Archaeomagnetic Research Group, University of Bradford",79.9,-2.4,6.2,580,810,Clark et al. (1988),FALSE,TRUE,"The alpha-95 value exceeded the critical value used in dating, and therefore this date should be used with caution. Two possible age ranges were produced: AD1600-1770 or AD590-810. The Post-Medieval date was discounted based on the archaeological evidence","Z. Outram & C.M. Batt (in press) Dating at Old Scatness. In Dockrill et al. (eds.) Excavations at Old Scatness, Shetland, Volume 1: The Pictish and Viking Settlement. Shetland Heritage Publications, Lerwick"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Halo of burnt red material,OSB AM25,"Archaeomagnetic Research Group, University of Bradford",73.0,12.8,4.5,450,600,Clark et al. (1988),FALSE,TRUE,"Several age ranges were produced: AD1490-1600, AD810-870, AD450-600, AD40-60 or 440-300BC. The age range AD450-600 was supported by the other dating evidence from the structure","Z. Outram (2006) A Reassessment of the Iron Age Chronology of the Northern Isles: a Pilot Study at Old Scatness Broch, Shetland. Unpublished PhD thesis, University of Bradford"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Area of burning in the corner of the structure,OSB AM26,"Archaeomagnetic Research Group, University of Bradford",65.3,318.8,9.7,,,,FALSE,FALSE,The alpha-95 value exceeded the critical value used in dating and the mean magnetic vector was based on less than 8 specimens. The magnetic direction did not overlap with the Clark et al. (1988) calibration curve and so a date could not be produced,"Z. Outram (2006) A Reassessment of the Iron Age Chronology of the Northern Isles: a Pilot Study at Old Scatness Broch, Shetland. Unpublished PhD thesis, University of Bradford"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Greasy reddish material in hearth,OSB AM27,"Archaeomagnetic Research Group, University of Bradford",76.0,18.6,4.1,see notes,see notes,Clark et al. (1988),FALSE,TRUE,"Several age ranges produced: AD1530-1630, AD800-950, AD500-720, and 500-250BC. The AD500-720 or AD800-950 age ranges were both similar to a radiocarbon date produced on the same material","Z. Outram & C.M. Batt (in press) Dating at Old Scatness. In Dockrill et al. (eds.) Excavations at Old Scatness, Shetland, Volume 1: The Pictish and Viking Settlement. Shetland Heritage Publications, Lerwick"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Secondary hearth in the structure,OSB AM31,"Archaeomagnetic Research Group, University of Bradford",68.4,351.6,4.1,140,210,Clark et al. (1988),FALSE,TRUE,The feature was from a Post-Medieval structure but the returned date was within the 2nd and 3rd centuries AD,"Z. Outram (2006) A Reassessment of the Iron Age Chronology of the Northern Isles: a Pilot Study at Old Scatness Broch, Shetland. Unpublished PhD thesis, University of Bradford"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Halo of burnt red material,OSB AM42,"Archaeomagnetic Research Group, University of Bradford",357.4,75.0,4.9,520,550,Clark et al. (1988),FALSE,TRUE,"Several age ranges were produced: AD1940-present, AD1610-1690, AD800-820, AD520-550, 300BC-AD130. The age range AD520-550 was supported by a radiocarbon date from a stratigraphically related context","Z. Outram (2006) A Reassessment of the Iron Age Chronology of the Northern Isles: a Pilot Study at Old Scatness Broch, Shetland. Unpublished PhD thesis, University of Bradford"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Area of burning,Area of orange fired clay,OSB AM51,"Archaeomagnetic Research Group, University of Bradford",78.7,342.1,7.9,-310,40,Clark et al. (1988),FALSE,TRUE,"The alpha-95 value exceeded the critical value used in dating, and the mean was based on less than 8 specimens. Tentative ranges of AD1600-present, AD600-820, 310BC-AD40 were produced. The earliest age range was supported by the archaeological evidence","Z. Outram (2006) A Reassessment of the Iron Age Chronology of the Northern Isles: a Pilot Study at Old Scatness Broch, Shetland. Unpublished PhD thesis, University of Bradford"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,Orange fired clay in the hearth,OSB AM63,"Archaeomagnetic Research Group, University of Bradford",79.7,341.2,9.5,-400,100,Clark et al. (1988),FALSE,TRUE,"The alpha-95 value exceeded the critical value used in dating, and the mean was based on less than 8 samples. Several age ranges were produced: AD1570-present, AD540-850 or 400BC-AD100. The oldest date was chosen based on the archaeological evidence","Z. Outram (2006) Old Scatness Broch, AM63: Archaeomagnetic dating report. Archaeomagnetic Research Group, University of Bradford. Unpublished report"
Maddison Street (SOU29),Hampshire,SU,410,110,Southampton City Museum,Iron Age,Kiln,"Medieval lime kiln, clay wall fired clay",AML841419/AJC81,Ancient Monuments Laboratory,61.0,6.8,2.2,see notes,see notes,,TRUE,FALSE,The data is based on the NRM values as demagnetisation increased the recorded scatter. Two possible age ranges were produced: AD1250-1290 or AD1450-1500 (68% confidence). The expected archaeological age was AD1325-1350.,"A.J. Clark (1986) Ancient Monuments Laboratory: Archaeomagnetic dating report. In J. Oxley (ed.) Excavations at Southampton Castle. Southampton City Museums: Oxford, Microfiche MF2, sheet C2"
Old Scatness Broch,Shetland Islands,HU,390,111,"North Atlantic Research Unit, University of Bradford",Iron Age onwards,Hearth,concentrated ash lens,OSB AM8,"Archaeomagnetic Research Group, University of Bradford",68.8,359.8,5.0,see notes,see notes,Clark et al. (1988),FALSE,TRUE,"Several possible age ranges were produced: AD1420-1480, AD1280-1320, AD270-460, AD50-230. None of these seemed to agree with the supporting dating evidence produced from the structure","Z. Outram & C.M. Batt (in press) Dating at Old Scatness. In Dockrill et al. (eds.) Excavations at Old Scatness, Shetland, Volume 1: The Pictish and Viking Settlement. Shetland Heritage Publications, Lerwick"
Higham Ferrers,Northamptonshire,SP,959,692,,Medieval,Kiln,Samples collected from the wall lining and pedestal of the pottery kiln,HF,Ancient Monuments Laboratory,56.5,2.3,2.0,1385,1435,Clark et al. (1988),FALSE,TRUE,A distortion correction of +2.4° was applied to the data.,"P. Linford (2002) Higham Ferrers, Northamptonshire: Archaeomagnetic dating report 2002. Ancient Monuments Laboratory (English Heritage), unpublished report 65/2002"
West Stow Heath,Suffolk,TL,773,700,,Roman Britain,Area of burning,Roman pottery kiln,,,67.2,358.0,3.2,,,,FALSE,FALSE,Date should be treated with caution as the mean is based on less than 8 specimens,"E. Thellier (1981) Sur la direction du champ magnetique terrestre, en France durant les deux dernieres millenaires. Physics of the Earth and Planetary Interiors 24: 89-132"
St Giles Hospital,North Yorkshire,SE,200,990,North Yorkshire County Council Historic Environment Team,Medieval,Hearth,Hearth,,GeoQuest Associates,69.7,8.3,5.3,,,,FALSE,FALSE,The mean magnetic vector was based on less than 8 specimens,"M. Noel (1990) Archaeomagnetic dating: St Giles Hospital, Brompton Bridge. GeoQuest Associates, unpublished report"
Shelley House,Greater London,TQ,320,810,Museum of London Archaeology Service,Roman Britain,Area of burning,Burnt feature,context 1127,The Clark Laboratory,64.5,349.7,1.1,,,,FALSE,FALSE,,"P. A. Mackie & W.A. McCann (1996) Archaeological investigations at Shelley House, London, EC2. Archaeomagnetic dating report No.191296. The Clark Laboratory, unpublished report"
Shelley House,Greater London,TQ,320,810,Museum of London Archaeology Service,Roman Britain,Area of burning,Burnt feature,context 1257,The Clark Laboratory,65.6,357.3,2.7,,,,FALSE,FALSE,The date should be treated with caution as the mean is based on less than 8 specimens,"P. A. Mackie & W.A. McCann (1996) Archaeological investigations at Shelley House, London, EC2. Archaeomagnetic dating report No.191296. The Clark Laboratory, unpublished report"
Shelley House,Greater London,TQ,320,810,Museum of London Archaeology Service,Roman Britain,Area of burning,Burnt feature,context 1261,The Clark Laboratory,62.0,351.9,5.8,,,,FALSE,FALSE,The alpha-95 value exceeded the critical value of 5° used in dating,"P. A. Mackie & W.A. McCann (1996) Archaeological investigations at Shelley House, London, EC2. Archaeomagnetic dating report No.191296. The Clark Laboratory, unpublished report"
Shelley House,Greater London,TQ,320,810,Museum of London Archaeology Service,Roman Britain,Area of burning,Burnt feature,context 1565,The Clark Laboratory,62.7,338.5,2.6,,,,FALSE,FALSE,,"P. A. Mackie & W.A. McCann (1996) Archaeological investigations at Shelley House, London, EC2. Archaeomagnetic dating report No.191296. The Clark Laboratory, unpublished report"
Shelley House,Greater London,TQ,320,810,Museum of London Archaeology Service,Roman Britain,Area of burning,Burnt feature,context 1598,The Clark Laboratory,61.5,342.6,1.8,,,,FALSE,FALSE,,"P. A. Mackie & W.A. McCann (1996) Archaeological investigations at Shelley House, London, EC2. Archaeomagnetic dating report No.191296. The Clark Laboratory, unpublished report"
Shelley House,Greater London,TQ,320,810,Museum of London Archaeology Service,Roman Britain,Area of burning,Burnt feature,context 1800,The Clark Laboratory,64.8,356.7,2.7,,,,FALSE,FALSE,,"P. A. Mackie & W.A. McCann (1996) Archaeological investigations at Shelley House, London, EC2. Archaeomagnetic dating report No.191296. The Clark Laboratory, unpublished report"
"Lloyds Register of Shipping, 68-71 Fenchurch St",Greater London,TQ,330,800,Museum of London Archaeology Services,Roman Britain,Hearth,Hearth,context 566,The Clark Laboratory,63.0,358.1,2.2,,,,FALSE,FALSE,,"P.A. Mackie & W.A. McCann (1997) Archaeological investigations at Lloyds Registry, London EC3. Archaeomagnetic dating report No.23297. The Clark Laboratory, unpublished report"
"Lloyds Register of Shipping, 68-71 Fenchurch St",Greater London,TQ,330,800,Museum of London Archaeology Services,Roman Britain,Hearth,Hearth,context 575,The Clark Laboratory,59.7,0.0,2.6,,,,FALSE,FALSE,,"P.A. Mackie & W.A. McCann (1997) Archaeological investigations at Lloyds Registry, London EC3. Archaeomagnetic dating report No.23297. The Clark Laboratory, unpublished report"
The Capitol Centre,Lancashire,SD,550,280,Lancaster University Archaeological Unit (now Oxford Archaeology North),Roman Britain,Kiln,Pottery kiln,context 1117,The Clark Laboratory,66.7,355.4,3.7,,,,FALSE,FALSE,,"P.A. Mackie & W.A. McCann (1997) Archaeological investigations at the Capitol Centre, Walton-le-Dale, Preston. Archaeomagnetic dating report No.28497. The Clark Laboratory, unpublished report"
"Guildhall Yard, 72-73 Basinghall Street",Greater London,TQ,320,810,Museum of London Archaeology Service,Roman Britain,Hearth,Hearth,context 21818,The Clark Laboratory,58.3,349.0,4.4,,,,FALSE,FALSE,,"P.A. Mackie & W.A. McCann (1996) Archaeological investigations at Guildhall Yard, London, EC2, City of London. Archaeomagnetic dating report No. 151196. The Clark Laboratory, unpublished report"
No.1 Poultry,Greater London,TQ,320,810,Museum of London Archaeology Service,Roman onwards,Hearth,Hearth,context 16682,The Clark Laboratory,63.8,340.8,4.0,,,,FALSE,FALSE,The date should be treated with caution as the mean in based on less than 8 specimens. The information was collected from Zananiri et al. (2007) but no reference was provided,I. Zananiri et al. (2007) Archaeomagnetic secular variation in the UK during the past 4000 years and its application to archaeomagnetic dating. Physics of the Earth and Planetary Interiors 160: 97-107
The Royal Opera House,Greater London,TQ,300,800,Museum of London Archaeology Service,Early Medieval/Medieval,Hearth,Hearth,context 515,The Clark Laboratory,71.8,349.3,3.8,,,,FALSE,FALSE,The date should be treated with caution as the mean was based on less than 8 specimens,"P.A. Mackie & W.A. McCann (1996) Archaeological investigations at the Royal Opera House, London, WC2. Archaeomagnetic dating report No. 21197. The Clark Laboratory, unpublished report"
The Royal Opera House,Greater London,TQ,300,800,Museum of London Archaeology Service,Early Medieval/Medieval,Hearth,Hearth,context 1510,The Clark Laboratory,68.4,337.3,6.1,,,,FALSE,FALSE,The date should be treated with caution as the mean in based on less than 8 specimens,"P.A. Mackie & W.A. McCann (1996) Archaeological investigations at the Royal Opera House, London, WC2. Archaeomagnetic dating report No. 21197. The Clark Laboratory, unpublished report"
The Royal Opera House,Greater London,TQ,300,800,Museum of London Archaeology Service,Early Medieval/Medieval,Hearth,Hearth,context 1628,The Clark Laboratory,72.1,352.5,,,,,FALSE,FALSE,No alpha-95 value was provided and so a magnetic rank was not applied,"P.A. Mackie & W.A. McCann (1996) Archaeological investigations at the Royal Opera House, London, WC2. Archaeomagnetic dating report No. 21197. The Clark Laboratory, unpublished report"
The Royal Opera House,Greater London,TQ,300,800,Museum of London Archaeology Service,Early Medieval/Medieval,Hearth,Hearth,context 2573,The Clark Laboratory,71.7,352.3,7.4,,,,FALSE,FALSE,The date should be treated with caution as the mean is based on less than 8 specimens,"P.A. Mackie & W.A. McCann (1996) Archaeological investigations at the Royal Opera House, London, WC2. Archaeomagnetic dating report No. 21197. The Clark Laboratory, unpublished report"
The Royal Opera House,Greater London,TQ,300,800,Museum of London Archaeology Service,Early Medieval/Medieval,Hearth,Hearth,context 2722,The Clark Laboratory,73.2,344.6,,,,,FALSE,FALSE,The date should be treated with caution as the mean is based on less than 8 specimens. No alpha-95 values were provided and so a magnetic rank was not assigned,"P.A. Mackie & W.A. McCann (1996) Archaeological investigations at the Royal Opera House, London, WC2. Archaeomagnetic dating report No. 21197. The Clark Laboratory, unpublished report"
The Royal Opera House,Greater London,TQ,300,800,Museum of London Archaeology Service,Early Medieval/Medieval,Hearth,Hearth,context 2791,The Clark Laboratory,73.5,356.7,2.7,,,,FALSE,FALSE,,"P.A. Mackie & W.A. McCann (1996) Archaeological investigations at the Royal Opera House, London, WC2. Archaeomagnetic dating report No. 21197. The Clark Laboratory, unpublished report"
"Bull Wharf, Thames Court, Upper Thames Street",Greater London,TQ,320,800,Museum of London Archaeology Service,Medieval,Hearth,Hearth,context 2605,The Clark Laboratory,63.1,356.2,4.4,,,,FALSE,FALSE,The date should be treated with caution as the mean is based on less than 8 specimens,"Archaeological investigations at Bull Wharf, Upper Thames Street, EC4. Archaeomagnetic dating report No.3496"
"Bull Wharf, Thames Court, Upper Thames Street",Greater London,TQ,320,800,Museum of London Archaeology Service,Medieval,Hearth,Hearth,context 2570,The Clark Laboratory,57.1,351.9,1.4,,,,FALSE,FALSE,,"A.J. Clark et al. (1997) Archaeological investigations at Bull Wharf, Upper Thames Street, EC4. Archaeomagnetic dating report No.3496. The Clark Laboratory unpublished report"
"Bull Wharf, Thames Court, Upper Thames Street",Greater London,TQ,320,800,Museum of London Archaeology Service,Medieval,Hearth,Hearth,context 2955,The Clark Laboratory,61.4,341.2,1.5,,,,FALSE,FALSE,,"A.J. Clark et al. (1997) Archaeological investigations at Bull Wharf, Upper Thames Street, EC4. Archaeomagnetic dating report No.3496. The Clark Laboratory unpublished report"
70-76 Eden Street,Greater London,TQ,180,690,Museum of London Archaeology Service,Medieval,Kiln,Kiln,context 264,The Clark Laboratory,55.7,358.9,0.9,,,,FALSE,FALSE,,"P.A. Mackie & W.A. McCann (1997) Archaeological investigations at Eden Street, Kingston. Archaeomagnetic dating report No. 27497. The Clark Laboratory, unpublished report"
Southgate Car Park,West Sussex,SU,845,119,,Medieval,Kiln,Pottery kiln constructed of ceramic tiles mortared together with clay. The samples related to a fired tile (n=2) and fired clay (n=11),CH,Ancient Monuments Laboratory,56.4,11.9,3.5,1218,1262,Clark et al. (1988),TRUE,FALSE,,"P. Linford (2000) Archaeomagnetic dating: Southgate Car Park, Chichester, West Sussex. Ancient Monuments Laboratory (English Heritage), unpublished report"
"Low Hall, Walthamstow",Greater London,TQ,360,880,Museum of London Archaeology Service,Medieval/Post-Medieval,Hearth,Hearth,context 637,The Clark Laboratory,57.9,356.3,1.5,,,,FALSE,FALSE,,"P.A. Mackie & W.A. McCann (1997) Archaeological investigations at Low Hall, Walthamstow. Archaeomagnetic dating report No. 38997. The Clark Laboratory, unpublished report"
"Low Hall, Walthamstow",Greater London,TQ,360,880,Museum of London Archaeology Service,Medieval/Post-Medieval,Hearth,Hearth,context 659,The Clark Laboratory,59.2,355.5,2.2,,,,FALSE,FALSE,,"P.A. Mackie & W.A. McCann (1997) Archaeological investigations at Low Hall, Walthamstow. Archaeomagnetic dating report No. 38997. The Clark Laboratory, unpublished report"
274 New Cross Road,Greater London,TQ,360,760,Pre-Construct Archaeology,Post-Medieval,Kiln,Brick clamp,context 180/196,The Clark Laboratory,67.3,348.8,1.7,,,,FALSE,FALSE,,"P.A. Mackie & W.A. McCann (1996) Archaeological investigations at 274 New Cross Road, London, SE14. Archaeomagnetic dating report No.121096. The Clark Laboratory, unpublished report"
Whitley Farm,Shropshire,SJ,473,028,,Roman onwards,Hearth,Hearth,context 1263,,66.5,343.2,4.1,,,,FALSE,FALSE,The data was taken from Zananiri et al. (2007) but no references were provided,I. Zananiri et al. (2007) Archaeomagnetic secular variation in the UK during the past 4000 years and its application to archaeomagnetic dating. Physics of the Earth and Planetary Interiors 160: 97-107
The Dominican Priory,"East Riding, Yorkshire",TA,039,394,,Medieval,Hearth,Pitched tile hearth,AJC-21,The Clark Laboratory,61.0,10.7,8.9,see notes,see notes,Clark et al. (1988),TRUE,FALSE,"An approximate date of the 13th century AD was suggested, but this should be treated with caution as the mean is only based on 3 specimens","A.J. Clark (1996) Archaeomagnetic dating. In M. Foreman (ed.) Further Excavations at the Dominican Priory, Beverley 1986-1989. Sheffield Academic Press Ltd: Sheffield, microfiche"
The Dominican Priory,"East Riding, Yorkshire",TA,039,394,,Medieval,Hearth,Clay hearth,AJC-24,The Clark Laboratory,64.1,15.1,1.5,1140,1190,Clark et al. (1988),TRUE,FALSE,A tentative magnetic rank was given to this sample as it was not stated how many samples this date was based on. There was also some concern that the feature had suffered an overall tilt and so the date should be treated with caution,"A.J. Clark (1996) Archaeomagnetic dating. In M. Foreman (ed.) Further Excavations at the Dominican Priory, Beverley 1986-1989. Sheffield Academic Press Ltd: Sheffield, microfiche"
The Dominican Priory,"East Riding, Yorkshire",TA,039,394,,Medieval,Hearth,Pitched tile hearth,AJC-22,The Clark Laboratory,59.3,5.6,2.3,see notes,see notes,Clark et al. (1988),TRUE,FALSE,A tentative magnetic rank was assigned to the feature as there was no indication of how many samples were measured. Two age ranges were produced: AD1260-1300 or AD1400-1440. Both are equally like to represent the true age of the feature,"A.J. Clark (1996) Archaeomagnetic dating. In M. Foreman (ed.) Further Excavations at the Dominican Priory, Beverley 1986-1989. Sheffield Academic Press Ltd: Sheffield, microfiche"
The Dominican Priory,"East Riding, Yorkshire",TA,039,394,,Medieval,Area of burning,Burnt loam surface,AJC-26,The Clark Laboratory,57.3,353.3,5.4,1330,1390,Clark et al. (1988),TRUE,FALSE,The mean magnetic vector was based on less than 8 specimens,"A.J. Clark (1996) Archaeomagnetic dating. In M. Foreman (ed.) Further Excavations at the Dominican Priory, Beverley 1986-1989. Sheffield Academic Press Ltd: Sheffield, microfiche"
The Dominican Priory,"East Riding, Yorkshire",TA,039,394,,Medieval,Hearth,Brick-lined hearth floor,AJC-41,The Clark Laboratory,64.1,15.9,2.0,1125,1175,Clark et al. (1988),TRUE,FALSE,The sampled bricks were cracked and may have suffered from an overall tilt. The date should be treated with caution,"A.J. Clark (1996) Archaeomagnetic dating. In M. Foreman (ed.) Further Excavations at the Dominican Priory, Beverley 1986-1989. Sheffield Academic Press Ltd: Sheffield, microfiche"
Abbey of St Mary Stratford Langthorne,Greater London,TQ,391,836,Passmore Edwards Museum,Medieval,Hearth,Lead-working hearth,AJC-115,The Clark Laboratory,64.5,12.4,2.2,1100,1170,Clark et al. (1988),TRUE,FALSE,A 1° allowance was made for the effect of magnetic refraction,"A.J. Clark (2004) Archaeomagnetic dating. In B. Barber et al. (eds.) The Cistercian abbey of St Mary Stratford Langthorne, Essex. Museum of London Archaeology Service: London, p179. Originally published in 1995. Reproduced for the monograph"
Abbey of St Mary Stratford Langthorne,Greater London,TQ,391,836,Passmore Edwards Museum,Medieval,Kiln,Limekiln,AJC-114,The Clark Laboratory,60.3,13.3,1.1,1130,1170,Clark et al. (1988),TRUE,FALSE,A correction of +2.4° was applied due to magnetic refraction,"A.J. Clark (2004) Archaeomagnetic dating. In B. Barber et al. (eds.) The Cistercian abbey of St Mary Stratford Langthorne, Essex. Museum of London Archaeology Service: London, p179. Originally published in 1995. Reproduced for the monograph"
33-35 Eastgate,"East Riding, Yorkshire",TA,030,390,Humberside Archaeological Unit,Medieval,Hearth,Pitched tile hearth,AJC-92,The Clark Laboratory,59.2,2.4,2.1,1260,1320,Clark et al. (1988),TRUE,FALSE,It was calculated that the feature had slumped by 6.8°. The date should therefore be treated with caution,"A.J. Clark (1992) Archaeomagnetic dating. In D.H. Evans & D.G. Tomlinson (eds.) Excavations at 33-35 Eastgate Beverley, 1983-1986. Sheffield Excavation Reports: Sheffield, p267"
Barham Gravel Quarry,Suffolk,TM,188,606,Suffolk County Council Archaeology Service,Roman Britain,Kiln,"Horizontal upper part of the pedestal (context 2368), and the reddened surface (context 2384) around the stokehole",BAR,GeoQuest Associates,62.0,2.6,2.7,see notes,see notes,Clark et al. (1988),FALSE,TRUE,"Two age ranges were produced: AD175-215 or AD270-300. Further evidence is required to distinguish between these two ranges, as they are both equally likely to represent where the true age lies","M. Noel (2005) Archaeomagnetic analysis of Roman pottery kiln, context 2368 & 2384, Barham Gravel Quarry, Claydon, Suffolk. GeoQuest Associates, unpublished report"
Flixton Park Quarry,Suffolk,TM,246,831,Suffolk County Council Archaeology Service,Roman Britain,Kiln,Well preserved Roman pottery kiln,FPQ1-15,GeoQuest Associates,66.4,356.6,2.5,90,150,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2001) Archaeomagnetic analysis of Roman pottery kiln contexts 0014 and 0016 at Flixton Park Quarry, Suffolk. GeoQuest Associates, unpublished report"
Flixton Park Quarry,Suffolk,TM,246,831,Suffolk County Council Archaeology Service,Roman Britain,Kiln,Roman pottery kiln,FPQ16-27,GeoQuest Associates,64.0,3.7,3.7,285,450,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2001) Archaeomagnetic analysis of Roman pottery kiln contexts 0014 and 0016 at Flixton Park Quarry, Suffolk. GeoQuest Associates, unpublished report"
Grimwade Street,Suffolk,SP,577,394,,Medieval,Kiln,Tile kiln,context 0042,GeoQuest Associates,58.1,7.6,1.5,1400,1420,Clark et al. (1988),FALSE,TRUE,"The magnetic direction diverges slightly from the calibration curve, probably due to disturbance of the Earth's magnetic field within the massive cooling structure. The date should therefore be treated with some caution","M. Noel (2008) Archaeomagnetic analysis of tile kilns 0042 and 0037 at Grimwade Street, Ipswich (Site Code IAS 6702). GeoQuest Associates, unpublished report"
Grimwade Street,Suffolk,SP,577,394,,Medieval,Kiln,Tile kiln,context 0037,GeoQuest Associates,56.8,3.5,2.4,1375,1405,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2008) Archaeomagnetic analysis of tile kilns 0042 and 0037 at Grimwade Street, Ipswich (Site Code IAS 6702). GeoQuest Associates, unpublished report"
Chapel Street,West Sussex,SU,861,032,Chichester Excavation Committee,Early Medieval,Kiln,Saxon pottery firing clamp kiln,CH2,,67.4,20.0,2.8,,,,FALSE,FALSE,"Date assigned to the feature ""Late Saxon""","A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Chapel Street,West Sussex,SU,861,032,Chichester Excavation Committee,Early Medieval,Kiln,Saxon pottery firing clamp kiln,CH3,,64.4,28.9,6.6,,,,FALSE,FALSE,"Date assigned to the feature ""Late Saxon"". The alpha-95 value exceeded the critical value of 5° used in dating","A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Peel Castle,Isle of Man,SC,241,845,,Medieval,Hearth,Small hearth set into a corner between two later walls,AJC-43,,67.1,10.2,2.6,see notes,see notes,Clark et al. (1988),TRUE,FALSE,"The calibrated date of the feature was AD500 or AD1500, but the feature showed signs of subsidence. An assumed tilt of 5° was applied to the data, resulting in a calibrated age range of AD1100-1180 at 68% confidence","A.J. Clark (2002) Archaeomagnetic assay. In D. Freke (ed.) Excavation on St Patrick's Isle Peel, Isle of Man, 1982-88. Prehistoric, Viking and later. Liverpool University Press: Liverpool, p.264"
Peel Castle,Isle of Man,SC,241,845,,Medieval,Hearth,A thick hearth deposit,AJC-45,,67.3,10.9,2.8,see notes,see notes,Clark et al. (1988),FALSE,FALSE,"The calibrated age range = 50BC, but it was concluded that the feature had tilted. A 14th century AD date was tentatively suggested for the feature once the tilt had been taken into account","A.J. Clark (2002) Archaeomagnetic assay. In D. Freke (ed.) Excavation on St Patrick's Isle Peel, Isle of Man, 1982-88. Prehistoric, Viking and later. Liverpool University Press: Liverpool, p.264"
Peel Castle,Isle of Man,SC,241,845,,Medieval,Hearth,soft red clay from the hearth,AJC-46,,70.3,3.0,3.3,see notes,see notes,Clark et al. (1988),FALSE,FALSE,"A date of 100BC was produced for the feature, but it was concluded that it had become tilted. Potential dates of AD500 or AD1500, or in the 11th century AD were tentatively suggested.","A.J. Clark (2002) Archaeomagnetic assay. In D. Freke (ed.) Excavation on St Patrick's Isle Peel, Isle of Man, 1982-88. Prehistoric, Viking and later. Liverpool University Press: Liverpool, p.264"
Wrenthorpe,West Yorkshire,SE,331,227,,Post-Medieval,Kiln,The floor of the kiln was sampled,,"Plymouth Environmental Research Centre, University of Plymouth",73.8,17.9,3.7,,,,FALSE,FALSE,,"D.H. Tarling (1984) Wrenthorpe, nr Wakefield: unpublished report. Department of Geological Sciences, Plymouth University, unpublished report"
Tintern Abbey,Monmouthshire,SO,533,000,,Medieval,Kiln,Small clay lined kiln,T2,Ancient Monuments Laboratory,60.8,4.9,3.5,,,,FALSE,FALSE,,"A.J. Clark (1983) Ancient Monuments Laboratory Report. English Heritage, unpublished report"
Underhoull,Shetland Islands,HP,576,045,North Atlantic Research Unit,Early Medieval/Medieval,Hearth,"Large orange area of clay with charcoal flecking within an area of flags, located in the southern annexe. The material was soft and friable and some areas only 0.5cm thick",UND AM149,"Archaeomagnetic Research Group, University of Bradford",66.6,14.7,2.6,1085,1300,Rendate v.1.0.0.4b,FALSE,TRUE,,"Z. Outram (2008) Archaeomagnetic dating at Underhoull, Unst, Shetland. Archaeomagnetic Research Group, University of Bradford. Unpublished report"
Underhoull,Shetland Islands,HP,576,045,North Atlantic Research Unit,Early Medieval/Medieval,Hearth,"Large orange area of clay with charcoal flecking within an area of flags, located in the southern annexe. The material was soft and friable and some areas only 0.5cm thick",UND AM150,"Archaeomagnetic Research Group, University of Bradford",63.5,9.6,2.6,1200,1400,Rendate v.1.0.0.4b,FALSE,TRUE,,"Z. Outram (2008) Archaeomagnetic dating at Underhoull, Unst, Shetland. Archaeomagnetic Research Group, University of Bradford. Unpublished report"
Underhoull,Shetland Islands,HP,576,045,North Atlantic Research Unit,Early Medieval/Medieval,Hearth,Orange-red hard baked ash hearth material overlaying a flagged surface,UND AM151,"Archaeomagnetic Research Group, University of Bradford",70.4,28.1,4.1,800,1140,Rendate v.1.0.0.4b,FALSE,TRUE,Two possible age ranges were produced: AD800-1140 or 1000-690BC. The earlier date was discounted based on the archaeological evidence,"Z. Outram (2008) Archaeomagnetic dating at Underhoull, Unst, Shetland. Archaeomagnetic Research Group, University of Bradford. Unpublished report"
Hamar,Shetland Islands,HP,649,091,North Atlantic Research Unit,Early Medieval/Medieval,Area of burning,"Area of soft red ash and charcoal on the west side of the upper room, House 1. The material sealed burnt bedrock and was approximately 3-4cm thick.",HMR AM154,"Archaeomagnetic Research Group, University of Bradford",63.6,18.5,3.9,1100,1330,Rendate v.1.0.0.4b,FALSE,TRUE,,"Z. Outram (2008) Archaeomagnetic dating at Hamar, Unst, Shetland. Archaeomagnetic Research Group, University of Bradford. Unpublished report"
Little Furnace Wood,East Sussex,TQ,591,245,Wealden Iron Research Group/Mid Sussex Field Archaeology Team,Roman Britain,Furnace,Roughly circular chimney flue base,Context 3,GeoQuest Associates,68.8,2.5,1.46,40,60,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2008) Archaeomagnetic analysis of contexts [3], [98], and [135], Little Furnace Wood, Mayfield, East Sussex. GeoQuest Associates, unpublished report"
Little Furnace Wood,East Sussex,TQ,591,245,Wealden Iron Research Group/Mid Sussex Field Archaeology Team,Roman Britain,Furnace,Base of furnace chimney,Context [135],GeoQuest Associates,63.3,1.1,9.2,see notes,see notes,Clark et al. (1988),FALSE,TRUE,Two possible age ranges: AD60-220 or AD270-480. The date should be used with caution as the alpha-95 value exceeded the critical value used in dating and the mean magnetic vector was based on less than 8 specimens,"M. Noel (2008) Archaeomagnetic analysis of contexts [3], [98], and [135], Little Furnace Wood, Mayfield, East Sussex. GeoQuest Associates, unpublished report"
Michelmersh,Hampshire,SU,344,264,Wessex Archaeology,Early Medieval,Kiln,Clamp kiln dug into the natural sandy clay soil. Black/red fired clay floor of kiln sampled,MM,Ancient Monuments Laboratory,67.5,23.5,1.8,965,1030,Clark et al. (1988),FALSE,TRUE,,"P. Linford (2002) Michelmersh, Hampshire: Archaeomagnetic dating report. Ancient Monuments Laboratory (English Heritage), unpublished report"
Ringlemere Farm,Kent,TR,293,569,Canterbury Archaeological Trust,Neolithic/Bronze Age,Hearth,"Clay hearth: dark brown/black very well-fired layer and a lighter sandy orange layer, which in places appeared to underlie the dark layer",RM,Ancient Monuments Laboratory,62.3,352.4,3.2,see notes,see notes,CALSK7K (Korte & Constable 2005),FALSE,TRUE,"The UK calibration curve only extends to 1000BC, so the global geomagnetic reference curve CALSK7K was used instead. An approximate date of 4500-3170BC was produced but this should be used with caution.","P. Linford & L. Martin (2008) Ringlemere Farm, Woodnesborough, Kent: Archaeomagnetic dating report. Ancient Monuments Laboratory (English Heritage), Research Department Report Series 88-2008"
Bignor Roman Villa,West Sussex,SU,987,146,"University College London, Field Archaeology Unit (now Archaeology South-East)",Roman Britain,Hypocaust,Tile-built stoke-hole of a hypocaust system,BIG,GeoQuest Associates,56.3,356.6,5.6,see notes,see notes,Clark et al. (1988),FALSE,TRUE,"The magnetic vector diverged from the calibration curve, which may be due to the intense magnetisation of the feature. The vector was extrapolated onto the curve, returning a tentative date of AD210-275.","M. Noel (2000) Archaeomagnetic study of a hypocaust stoke-hole at Bignor Roman villa, W. Sussex. GeoQuest Associates, unpublished report"
Barnburgh Hall,South Yorkshire,SE,498,006,West Yorkshire Archaeological Service,Post-Medieval,Kiln,Burnt limestone and clay,BAR,GeoQuest Associates,66.4,356.6,2.5,1590,1625,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2001) Archaeomagnetic analysis of lime kiln context 1045 at Barnburgh Hall, Doncaster. GeoQuest Associates, unpublished report"
33 Queen Street,Hertfordshire,TL,168,349,Pre-Construct Archaeology Ltd,Medieval,Hearth,Fired clay hearth approximately 80cm in diameter,HIT,GeoQuest Associates,15.1,58.1,3.8,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The magnetic vector did not overlap with the calibration curve. The vector was extrapolated onto the curve to produce a tentative date of AD1220-1250. The mean magnetic vector was based on less than 8 specimens,"M. Noel (2001) Archaeomagnetic analysis of a fired clay hearth at 33 Queen Street, Hitchin, Hertfordshire. GeoQuest Associates, unpublished report"
Jubilee Square,Berkshire,SU,720,728,AOC Archaeology,Medieval,Kiln,Tile kiln constructed of red and grey tiles. Samples collected from the arch of the flue and the kiln walls,REA,GeoQuest Associates,55.9,359.6,3.6,1365,1400,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2001) Archaeomagnetic analysis of Medieval tile kiln, context 7240, Jubilee Square, Reading. GeoQuest Associates, unpublished report"
"Linch Clough, Hope Woodlands",Derbyshire,SK,167,893,Peak District National Park,Medieval,Hearth,Burnt sandstone base of hearth,LIN,GeoQuest Associates,63.5,6.3,2.6,1430,1470,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2001) Archaeomagnetic analysis of Medieval iron smelting hearth, context 1019, Hope Woodlands, Upper Derwent Valley. GeoQuest Associates, unpublished report"
"Dash Farm Close, Chapel Road",Northamptonshire,SP,922,896,Archaeological Project Services,Early Medieval,Furnace,Slag and fired clay associated with a furnace,WEL,GeoQuest Associates,71.3,19.8,6.1,840,980,Clark et al. (1988),FALSE,TRUE,Two possible age ranges were produced: AD840-980 or AD1540-1580. The earlier range was supported by the archaeological evidence. The mean magnetic vector was based on less than 8 specimens,"M. Noel (2001) Archaeomagnetic analysis of a Medieval iron smelting furnace, context 139, Weldon, Northants. GeoQuest Associates, unpublished report"
Glebe Farm,Nottinghamshire,SK,867,789,Trent and Peak Archaeological Trust (now Trent & Peak Archaeology),Early Medieval,Pit,"Oval pit 1.4m x 1.0m, approximately 0.3m deep. An 8cm layer of burnt gravel were at the base of the feature. The burnt chert pebbles were sampled",BRO,GeoQuest Associates,64.4,9.9,8.0,see notes,see notes,Clark et al. (1988),FALSE,TRUE,"The magnetism was weak and unstable, so they were not demagnetised. The calibrated age range was based on the NRM. Two possible age ranges were produced: AD1125-1250 or AD1440-1510, neither of which corresponds with the expected Anglo-Saxon period date","M. Noel (2001) Archaeomagnetic analysis of fired pit feature, context 0634, Glebe Farm, Brough, Nottinghamshire. GeoQuest Associates, unpublished report"
21-23 London Road,Greater London,TQ,184,681,Pre-Construct Archaeology Ltd,Medieval,Kiln,pitched tiles and dripped glaze area from the youngest of three tile-built kilns,KIN1-8,GeoQuest Associates,58.0,4.3,2.4,1395,1420,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2002) Archaeomagnetic analysis of three Medieval kilns at 21-23 London Road, Kingston upon Thames. GeoQuest Associates, unpublished report"
21-23 London Road,Greater London,TQ,184,681,Pre-Construct Archaeology Ltd,Medieval,Kiln,Fired floor surface of the middle of three pitched tile kilns recorded in sequence,KIN9-16,GeoQuest Associates,4.4,56.6,2.1,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The date should be used with caution as it was based on less than 8 samples. The magnetic vector did not overlap with the calibration curve. When the inclination value was extrapolated onto the curve a tentative date of AD1380-1405 was produced.,"M. Noel (2002) Archaeomagnetic analysis of three Medieval kilns from 21-23 London Road, Kingston upon Thames. GeoQuest Associates, unpublished report"
21-23 London Road,Greater London,TQ,184,681,Pre-Construct Archaeology Ltd,Medieval,Kiln,Fired floor surface of the oldest of a sequence of three pitched tile kilns,KIN16-24,GeoQuest Associates,56.6,11.4,3.3,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The date should be used with caution as it was based on less than 8 samples. The magnetic vector did not overlap with the calibration curve. When the inclination value was extrapolated onto the curve a tentative date of AD1375-1410 was produced,"M. Noel (2002) Archaeomagnetic analysis of three Medieval kilns from 21-23 London Road, Kingston upon Thames. GeoQuest Associates, unpublished report"
"Narrow Street, Limehouse",Greater London,TQ,362,808,Pre-Construct Archaeology Ltd,Medieval,Area of burning,Burnt clay area from on-site brick and tile manufacture,NAR,GeoQuest Associates,64.0,7.0,2.0,1465,1485,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2000) Archaeomagnetic study of a burnt horizon at Narrow Street, Limehouse, London E14. GeoQuest Associates, unpublished report"
Walkergate,Durham,NZ,273,426,Northern Archaeological Associates,Medieval,Furnace,Base of a substantial furnace constructed of sandstone flags and blocks,WAL1-14,GeoQuest Associates,60.7,2.2,2.3,1390,1415,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2000) Archaeomagnetic study of contexts 993, 545, 591 at Walkergate, Durham. GeoQuest Associates, unpublished report"
Walkergate,Durham,NZ,273,426,Northern Archaeological Associates,Medieval,Furnace,Furnace base constructed of stone. Stratigraphically younger than context 993. Possibly used for iron roasting,WAL15-28,GeoQuest Associates,64.6,2.5,2.3,See notes,see notes,Clark et al. (1988),FALSE,TRUE,The magnetic vector did not overlap with the calibration curve. The inclination values were extrapolated onto the curve to produce a tentative date of AD1430-1455,"M. Noel (2000) Archaeomagnetic study of contexts 993, 545, 591 at Walkergate, Durham. GeoQuest Associates, unpublished report"
Walkergate,Durham,NZ,273,426,Northern Archaeological Associates,Medieval,Area of burning,Sub-circular burnt area of clay-sand associated with industrial activity,WAL29-39,GeoQuest Associates,61.7,2.7,3.1,1400,1430,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2000) Archaeomagnetic study of contexts 993, 545, 591 at Walkergate, Durham. GeoQuest Associates, unpublished report"
Jubilee Place,West Yorkshire,SE,450,220,West Yorkshire Archaeology Service,Medieval,Kiln,Fired natural sand at the base of the kiln. The kiln was filled with Medieval pottery of probable Humberware type,PON,GeoQuest Associates,59.2,9.7,2.2,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The magnetic vector did not overlap with the calibration curve. The vector lay close to the 13th-14th century part of the calibration curve.,"M. Noel (2000) Archaeomagnetic study of fired context 050 at Jubilee Place, Pontefract. GeoQuest Associates, unpublished report"
Thame Park,Oxfordshire,SP,690,117,Oxford Archaeology,Medieval,Hearth,Hearth constructed from on-edge tiles,THA,GeoQuest Associates,62.0,6.1,4.2,1430,1475,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2002) Archaeomagnetic analysis of Medieval hearth, context 1470, Thame Park, Oxon. GeoQuest Associates, unpublished report"
Blue Bridge Lane,North Yorkshire,SE,607,510,Field Archaeology Specialists Ltd,Medieval,Kiln,Hard-fired brown clay sand of the kiln,BBL,GeoQuest Associates,59.2,21.3,2.2,see notes,see notes,Clark et al. (1988),FALSE,TRUE,"Steep railings next to the feature caused an error in the sample orientation, resulting in the magnetic vector being deflected. Tentative dates of AD1320-1340 or AD1360-1430 were produced when the inclination values were extrapolated onto the curve","M. Noel (2002) Archaeomagnetic analysis of Medieval pottery kiln, feature 58, context 2136, Blue Bridge Lane, York. GeoQuest Associates, unpublished report"
Nosterfield Quarry,North Yorkshire,SE,262,783,Field Archaeology Specialists,Roman Britain,Kiln,"A kiln or corn-drying oven approximately 1.2m x 0.8m, constructed of stone mortared with fired clay",NOS,GeoQuest Associates,66.6,357.0,3.8,100,170,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2002) Archaeomagnetic analysis of a Roman kiln/drying oven, context F159, at Nosterfield Quarry, North Yorkshire. GeoQuest Associates, unpublished report"
Town Street,"East Riding, Yorkshire",SE,820,460,MAP Archaeological Consultancy Ltd,Roman Britain,Pit,Pit approximately 40cm diameter with burnt clay lining,HAY,GeoQuest Associates,64.7,2.4,1.6,295,405,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2002) Archaeomagnetism of burnt clay lining of a pit, context 1160, Town Street, Hayton, East Riding of Yorkshire. GeoQuest Associates, unpublished report"
"East Witton Yorks, Water pipeline",North Yorkshire,SE,196,894,Northern Archaeological Associates,Medieval,Kiln,A kiln constructed of fired clay and sandstone,HEA,GeoQuest Associates,61.3,9.5,4.1,1235,1280,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2002) Archaeomagnetic analysis of Medieval pottery kiln, context 548, Healey, North Yorkshire. GeoQuest Associates, unpublished report"
Yarnton,Oxfordshire,SP,469,109,Oxford Archaeology,Iron Age,Silt,Organic rich layer at the base of the ditch,,Ancient Monuments Laboratory,70.2,3.4,2.0,see notes,see notes,Clark et al. (1988),FALSE,TRUE,"Two age ranges produced: 215-90BC or 10BC-AD60. Both ranges compare well with the radiocarbon dates produced from acquatic plant material from the basal fill of the ditch: OxA-10707 = 360-1 cal BC, OxA-10708 = 390-90 cal BC.","N. Linford et al. (2005) Dating environmental change using magnetic bacteria in archaeological soils from the Upper Thames Valley, UK. Journal of Archaeological Science 32: 1037-1043"
Staxton Farm,North Yorkshire,TA,042,906,MAP Archaeological Consultants Ltd,Medieval,Kiln,"Hearth or kiln base, fired clay sampled",STA,GeoQuest Associates,62.3,17.4,2.7,1190,1250,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2002) Archaeomagnetic analysis of hearth or kiln base context 1012, Staxton Farm, North Yorkshire. GeoQuest Associates, unpublished report"
Marrick Park,North Yorkshire,NZ,196,005,Kevin J. Cale Archaeological Consultant,Post-Medieval,Hearth,Substantial domestic hearth constructed of heated sandstone flags,MPK,GeoQuest Associates,76.4,0.9,1.9,1645,1678,Clark et al. (1988),FALSE,TRUE,Date based on less than 8 samples and so should be treated with caution,"M. Noel (2002) Archaeomagnetic analysis of a flagstone hearth base, context 506, Marrick Park. GeoQuest Associates, unpublished report"
Hazel Lane Quarry,South Yorkshire,SE,598,007,Thames Valley Archaeological Services,Roman Britain,Kiln,Kiln constructed of limestone slabs,HLQ,GeoQuest Associates,64.9,0.0,1.8,145,180,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2002) Archaeomagnetic analysis of two features at Hazel Lane Quarry, Hampole, South Yorkshire. Site code HLH 02/04. GeoQuest Associates, unpublished report"
Sewerby Cottage Farm,"East Riding, Yorkshire",TA,178,686,On Site Archaeology,Roman Britain,Kiln,burnt clay floor of a possible corn drying oven. Samples were collected from the T-shaped flue which was set into a pit approximately 3m wide,SEW,GeoQuest Associates,67.5,4.1,2.9,see notes,see notes,Clark et al. (1988),FALSE,TRUE,"The magnetic vector did not overlap with the calibration curve. If the inclination values are extrapolated onto the curve three tentative age ranges are produced: AD40-90, AD410-460 or AD1460-1520.","M. Noel (2003) Archaeomagnetic analysis of corn dryer, context 3857, Sewerby Cottage Farm, Bridlington. GeoQuest Associates, unpublished report"
Sheriff Hutton Castle,North Yorkshire,SE,654,676,Ed Dennison Archaeological Services Ltd,Medieval,Oven,"Base of a bread oven or drying kiln approximately 2m in diameter, constructed of bricks",SHH11-20,GeoQuest Associates,59.3,18.8,4.2,see notes,see notes,Clark et al. (1988),FALSE,TRUE,It was though the magnetic vector was deflected by scaffolding near the feature. A tentative date of AD1230-1270 or AD1350-1420 was produced. The mean magnetic vector was based on less than 8 specimens,"M. Noel (2003) Archaeomagnetic analysis of four Medieval burnt features at Sheriff Hutton Castle: contexts 009,025, 019 & 015. GeoQuest Associates, unpublished report"
Sheriff Hutton Castle,North Yorkshire,SE,654,676,Ed Dennison Archaeological Services Ltd,Medieval,Hearth,A brick from a fireplace was sampled,SHH21-30,GeoQuest Associates,61.9,11.1,6.0,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The date should be treated with caution as it was based on less than 8 specimens and the alpha-95 value exceeded the critical value of 5° used in dating. Two possible age ranges were produced: AD1170-1280 or AD1390-1450.,"M. Noel (2003) Archaeomagnetic analysis of four Medieval burnt features at Sheriff Hutton Castle: contexts 009,025, 019 & 015. GeoQuest Associates, unpublished report"
Sheriff Hutton Castle,North Yorkshire,SE,654,676,Ed Dennison Archaeological Services Ltd,Medieval,Area of burning,Burnt sandstone from a wall above the Medieval hearth,SHH31-37,GeoQuest Associates,62.9,357.9,5.6,1290,1340,Clark et al. (1988),FALSE,TRUE,The date should be treated with caution as it was based on less than 8 specimens,"M. Noel (2003) Archaeomagnetic analysis of four Medieval burnt features at Sheriff Hutton Castle: contexts 009,025, 019 & 015. GeoQuest Associates, unpublished report"
Bintree,Norfolk,TG,032,234,Network Archaeology Ltd,Roman Britain,Kiln,"Kiln set into a flat-bottomed, vertical sided pit and is cruciform in plan. Two concentric circles of heated clay sampled: the inner zone is light-grey/mid blue grey silt, the outer zone is orange/salmon pink/brick red clay",BIN,GeoQuest Associates,61.8,358.4,3.2,170,230,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2003) Archaeomagnetic analysis of possible Romano-British kiln or corn drying oven, context 24059, Bintree, Nortfolk. GeoQuest Associates, unpublished report"
Horse Cross,Perth and Kinross,NO,094,241,SUAT Ltd,Medieval,Hearth,Stone flagged base of a hearth that was sealed by a silty floor deposit containing 13th-15th century Medieval pottery,PER,GeoQuest Associates,59.4,9.3,3.0,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The magnetic vector did not overlap with the calibration curve. If the inclination values are extrapolated onto the curve a tentative date of AD1360-1390 is produced,"M. Noel (2003) Archaeomagnetic analysis of medieval hearth context 1140, Perth (site code PE43). GeoQuest Associates, unpublished report"
Broadwood Project,North Yorkshire,SD,674,784,Ingleborough Archaeological Group,Iron Age/Roman,Kiln,Conical lime kiln constructed of sandstone and limestone boulders. The limestone was sampled for dating,ING,GeoQuest Associates,73.7,357.6,2.6,-200,-100,Clark et al. (1988),FALSE,TRUE,"Two possible age ranges were produced: 200-100BC or AD1650-1695. The later date was discounted based on the archaeological evidence. The earlier age range is Iron Age, but the estimated date for the feature was Roman (AD43-410).","M. Noel (2003) Archaeomagnetic analysis of lime kiln, context 404, Broadwood Project, Ingleton (site code BW03). GeoQuest Associates, unpublished report"
"Bread and Meat Close, Friar Street",Warwickshire,SP,277,647,Northamptonshire Archaeology,Medieval,Kiln,Floor of central chamber of the kiln (latest of the two features sampled),WAR1-11,GeoQuest Associates,55.4,2.8,3.4,1340,1370,Clark et al. (1988),FALSE,TRUE,Two connected features were sampled. Context 1036 represents the youngest part.,"M. Noel (2003) Archaeomagnetic analysis of a Medieval tile kiln at Bread and Meat Close, Warwick (site code WBM03). GeoQuest Associates, unpublished report"
"Bread and Meat Close, Friar Street",Warwickshire,SP,277,647,Northamptonshire Archaeology,Medieval,Kiln,"The north, south, east and west walls respectively of the south chamber of the kiln (the oldest feature sampled)",WAR12-20,GeoQuest Associates,59.8,8.0,3.2,1300,1330,Clark et al. (1988),FALSE,TRUE,"Two features were sampled: the walls sampled by contexts 1005, 1008, 1010 and 1015 represent the oldest parts of the sampled feature","M. Noel (2003) Archaeomagnetic analysis of a Medieval tile kiln at Bread and Meat Close, Warwick (site code WBM03). GeoQuest Associates, unpublished report"
"St Margaret's Baths, Causeway Lane",Leicestershire,SK,624,040,University of Leicester Archaeology Service,Medieval,Oven,Fired clay from a malting oven was sampled,MBA,GeoQuest Associates,61.7,13.5,4.2,1170,1235,Clark et al. (1988),FALSE,TRUE,The date should be treated with caution as it was based on less than 8 specimens,"M. Noel (2003) Archaeomagnetic analysis of Medieval malting oven, context 550, St Margaret's Baths site, Leicester. GeoQuest Associates, unpublished report"
"Westbridge Wharf site, Bath Lane",Leicestershire,SK,624,040,University of Leicester Archaeology Service,Roman Britain,Kiln,Fired clay from the walls of a lime clamp kiln was sampled,WW,GeoQuest Associates,57.4,5.5,5.0,230,270,Clark et al. (1988),FALSE,TRUE,The date should be treated with caution as it was based on less than 8 specimens,"M. Noel (2003) Archaeomagnetic analysis of lime clamp kiln, context 80, Westbridge Wharf site, Leicester. GeoQuest Associates, unpublished report"
Maiden Green,Derbyshire,SK,134,893,Trent and Peak Archaeological Unit,Iron Age onwards,Hearth,Charcoal and fired clay of a shallow bowl-shaped hearth or furnace base,MGH,GeoQuest Associates,69.5,15.2,7.8,see notes,see notes,,FALSE,FALSE,"No date was produced as the results were too scattered, and the alpha-95 value exceeded the critical value of 5° used in dating","M. Noel (2004) Archaeomagnetic analysis of burnt context 0206, Maiden Green, Hope, Derbyshire (site code MGH). GeoQuest Associates, unpublished report"
Wolverton Mill,Northamptonshire,SP,893,388,Northamptonshire Archaeology,Early Medieval,Oven,"Limestone embedded in fired clay, part of a malting oven/corn dryer",WOM,GeoQuest Associates,68.9,24.8,1.7,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The magnetic vector did not overlap with the calibration curve. A tentative date of AD970-1020 was produced when the inclination values were extrapolated onto the curve,"M. Noel (2004) Archaeomagnetic analysis of context Nos 254 and 512 from Wolverton Mill, Northants (site code WM04). GeoQuest Associates, unpublished report"
62-68 Low Petergate,North Yorkshire,SE,604,520,York Archaeological Trust,Medieval,Hearth,Metal working hearth,LPG,GeoQuest Associates,70.2,338.0,3.6,1830,1900,Clark et al. (1988),FALSE,TRUE,"The estimate date for the feature was Late Medieval (AD1300-1540), but Victorian period date was produced","M. Noel (2004) Archaeomagnetic analysis of heath context No.5005 from 62-68 Low Petergate, York (site code 2002.421). GeoQuest Associates, unpublished report"
"North Kent Hospital, Gravesend",Greater London,TQ,669,751,Pre-Construct Archaeology,Iron Age/Roman,Pit,Fired clay from the base of a fired pit,GRA1-8,GeoQuest Associates,66.9,11.1,2.3,485,510,Clark et al. (1988),FALSE,TRUE,Date should be treated with caution as it was based on less than 8 specimens,"M. Noel (2004) Archaeomagnetic analysis of contexts 351 and 519 from North Kent Hospital, Gravesend (site code KGER04). GeoQuest Associates, unpublished report"
"North Kent Hospital, Gravesend",Greater London,TQ,669,751,Pre-Construct Archaeology,Iron Age/Roman,Pit,Fired clay from the base of a fired pit,GRA9-18,GeoQuest Associates,68.1,15.1,1.9,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The magnetic vector did not overlap with the calibration curve. If the inclination values are extrapolated onto the curve a tentative date of AD500-530 is produced,"M. Noel (2004) Archaeomagnetic analysis of contexts 351 and 519 from North Kent Hospital, Gravesend (site code KGER04). GeoQuest Associates, unpublished report"
Old Mart,Louth,SB,131,336,Archaeological Development Services,Medieval,Kiln,Fired clay from a pottery kiln,samples 1-10,GeoQuest Associates,55.8,13.1,2.1,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The magnetic vector did not overlap with the calibration curve. If the vector is extrapolated onto the curve a tentative date of AD1150-1250 is produced,"M. Noel (2004) Archaeomagnetic analysis of contexts 488 and 596 from Old Mart, Drogheda, Louth (site code 04E0224). GeoQuest Associates, unpublished report"
Old Mart,Louth,SB,131,336,Archaeological Development Services,Medieval,Kiln,Fired clay from a pottery kiln,samples 1-6,GeoQuest Associates,61.7,4.1,4.5,1270,1305,Clark et al. (1988),FALSE,TRUE,The date should be treated with caution as it is based on less than 8 specimens,"M. Noel (2004) Archaeomagnetic analysis of contexts 488 and 596 from Old Mart, Drogheda, Louth (site code 04E0224). GeoQuest Associates, unpublished report"
Melton,"East Riding, Yorkshire",SE,977,270,On Site Archaeology,Roman Britain,Oven,Fired clay,MEL,GeoQuest Associates,60.0,354.7,5.1,see notes,see notes,Clark et al. (1988),FALSE,TRUE,"Two possible age ranges were produced: the magnetic vector overlapped the calibration curve at AD1310-1350, and was extrapolated to cross the curve at AD200-250. The earlier date is supported by the archaeological evidence but should be used with caution","M. Noel (2004) Archaeomagnetic analysis of a conjecture crop dryer, context 4374 at Melton, near Kingston upon Hull. GeoQuest Associates, unpublished report"
Bermondsey Square,Greater London,TQ,333,794,Pre-Construct Archaeology,Medieval,Area of burning,Fired clay surface probably associated with the demolition of the monastic buildings,BER,GeoQuest Associates,58.8,2.7,2.2,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The magnetic vector did not overlap with the calibration curve. Tentative age ranges of AD1280-1320 or AD1400-1430 were produced when the vector was extrapolated onto the curve,"M. Noel (2006) Archaeomagnetic analysis of an area of burning, context 5353, Bermondsey, Southwark, London (site code BYQ98). GeoQuest Associates, unpublished report"
Cracoe,North Yorkshire,SE,001,560,Ingleborough Archaeology Group,Post-Medieval,Kiln,"Burnt sandstone and limestone from the lining of a lime kiln, constructed of blocks of sandstone lying directly on the limestone bedrock",CRA,GeoQuest Associates,74.8,355.5,1.6,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The magnetic vector did not overlap with the calibration curve. A tentative date of AD1660-1700 was produced when the vector was extrapolated onto the curve.,"M. Noel (2005) Archaeomagnetic analysis of a lime kiln at Cracoe, Yorkshire Dales. GeoQuest Associates, unpublished report"
"St Margaret's Baths, Vaughan Way",Leicestershire,SK,624,040,University of Leicester Archaeology Service,Medieval,Pit,Fired clay from the bell mould pit,MBA3-11,GeoQuest Associates,63.5,18.9,1.3,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The magnetic vector did not overlap with the calibration curve. A tentative date of AD1150-1180 was produced once the vector was extrapolated onto the curve.,"M. Noel (2005) Archaeomagnetic analysis of contexts 10,001, 10,002, and 10,003 at St Margaret's Baths, Vaughan Way, Leicester. GeoQuest Associates, unpublished report"
"St Margaret's Baths, Vaughan Way",Leicestershire,SK,624,040,University of Leicester Archaeology Service,Medieval,Oven,The fired clay floor of an oven,MBA22-27,GeoQuest Associates,59.5,1.3,6.6,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The date should be treated with caution as it was based on less than 8 specimens and returned an alpha-95 value that exceeded the critical value of 5° used in archaeomagnetic dating. Two possible ranges were produced: AD1270-1350 or AD1370-1440.,"M. Noel (2005) Archaeomagnetic analysis of contexts 10,001, 10,002, and 10,003 at St Margaret's Baths, Vaughan Way, Leicester. GeoQuest Associates, unpublished report"
"Bedford Western Bypass, Area 3",Bedfordshire,SP,958,567,Albion Archaeology,Roman Britain,Kiln,Fired clay lining of the pottery kiln,BWB,GeoQuest Associates,64.2,6.3,3.1,300,460,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2006) Archaeomagnetic analysis of pottery kiln lining, context 3339, Bedford Western Bypass (site code BWB 1124). GeoQuest Associates, unpublished report"
Shippams Factory site,West Sussex,SU,867,063,Pre-Construct Archaeology Ltd,Roman Britain,Oven,Fired clay,,GeoQuest Associates,60.0,3.2,2.0,275,290,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2006) Archaeomagnetic analysis of four Roman ovens or kilns at the Shippams Factory site, Chichester (site code WSHF04). GeoQuest Associates, unpublished report"
Shippams Factory site,West Sussex,SU,867,063,Pre-Construct Archaeology Ltd,Roman Britain,Oven,Fired clay,,GeoQuest Associates,65.4,5.0,2.6,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The magnetic vector did not overlap with the calibration curve. Tentative dates of c. AD130 or c. AD460 were produced when the vector was extrapolated onto the curve,"M. Noel (2006) Archaeomagnetic analysis of four Roman ovens or kilns at the Shippams Factory site, Chichester (site code WSHF04). GeoQuest Associates, unpublished report"
Shippams Factory site,West Sussex,SU,867,063,Pre-Construct Archaeology Ltd,Roman Britain,Oven,Fired clay,,GeoQuest Associates,57.0,5.5,2.2,255,270,Clark et al. (1988),FALSE,TRUE,The date should be treated with caution as it was based on less than 8 specimens,"M. Noel (2006) Archaeomagnetic analysis of four Roman ovens or kilns at the Shippams Factory site, Chichester (site code WSHF04). GeoQuest Associates, unpublished report"
Catsick Hill,Leicestershire,SK,575,184,Northamptonshire Archaeology,Medieval/Post-Medieval,Kiln,Fired brick and fusion crust,,GeoQuest Associates,70.8,335.8,1.4,1825,1860,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2006) Archaeomagnetic analysis of fifteen limekilns at Catsick Hill, Barrow upon Soar, Leicestershire (site code BOSP06). GeoQuest Associates, unpublished report"
Catsick Hill,Leicestershire,SK,575,184,Northamptonshire Archaeology,Medieval/Post-Medieval,Kiln,Fired brick and fusion crust,,GeoQuest Associates,71.9,335.0,1.6,1795,1840,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2006) Archaeomagnetic analysis of fifteen limekilns at Catsick Hill, Barrow upon Soar, Leicestershire (site code BOSP06). GeoQuest Associates, unpublished report"
Catsick Hill,Leicestershire,SK,575,184,Northamptonshire Archaeology,Medieval/Post-Medieval,Kiln,Fired brick and fusion crust,,GeoQuest Associates,74.6,345.9,5.4,1700,1750,Clark et al. (1988),FALSE,TRUE,The date should be treated with caution as it was based on less than 8 specimens,"M. Noel (2006) Archaeomagnetic analysis of fifteen limekilns at Catsick Hill, Barrow upon Soar, Leicestershire (site code BOSP06). GeoQuest Associates, unpublished report"
Catsick Hill,Leicestershire,SK,575,184,Northamptonshire Archaeology,Medieval/Post-Medieval,Kiln,Fired brick and fusion crust,,GeoQuest Associates,70.1,336.3,3.0,1825,1870,Clark et al. (1988),FALSE,TRUE,The date should be treated with caution as it was based on less than 8 specimens,"M. Noel (2006) Archaeomagnetic analysis of fifteen limekilns at Catsick Hill, Barrow upon Soar, Leicestershire (site code BOSP06). GeoQuest Associates, unpublished report"
Catsick Hill,Leicestershire,SK,575,184,Northamptonshire Archaeology,Medieval/Post-Medieval,Kiln,Fired brick and fusion crust,,GeoQuest Associates,69.4,338.9,0.7,1870,1880,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2006) Archaeomagnetic analysis of fifteen limekilns at Catsick Hill, Barrow upon Soar, Leicestershire (site code BOSP06). GeoQuest Associates, unpublished report"
Catsick Hill,Leicestershire,SK,575,184,Northamptonshire Archaeology,Medieval/Post-Medieval,Kiln,Fired brick and fusion crust,,GeoQuest Associates,72.4,343.3,2.1,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The magnetic vector did not overlap with the calibration curve. A tentative date of c. AD1750 was produced when the vector was extrapolated onto the curve,"M. Noel (2006) Archaeomagnetic analysis of fifteen limekilns at Catsick Hill, Barrow upon Soar, Leicestershire (site code BOSP06). GeoQuest Associates, unpublished report"
Catsick Hill,Leicestershire,SK,575,184,Northamptonshire Archaeology,Medieval/Post-Medieval,Kiln,Fired brick and fusion crust,,GeoQuest Associates,68.2,342.7,2.0,1885,1910,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2006) Archaeomagnetic analysis of fifteen limekilns at Catsick Hill, Barrow upon Soar, Leicestershire (site code BOSP06). GeoQuest Associates, unpublished report"
Catsick Hill,Leicestershire,SK,575,184,Northamptonshire Archaeology,Medieval/Post-Medieval,Kiln,Base of kiln,,GeoQuest Associates,66.9,2.1,1.9,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The magnetic vector did not overlap with the calibration curve. A tentative date of AD c.1490 was produced when the vector was extrapolated onto the curve,"M. Noel (2006) Archaeomagnetic analysis of fifteen limekilns at Catsick Hill, Barrow upon Soar, Leicestershire (site code BOSP06). GeoQuest Associates, unpublished report"
Catsick Hill,Leicestershire,SK,575,184,Northamptonshire Archaeology,Medieval/Post-Medieval,Kiln,Base of the kiln,,GeoQuest Associates,68.6,10.0,2.2,1515,1535,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2006) Archaeomagnetic analysis of fifteen limekilns at Catsick Hill, Barrow upon Soar, Leicestershire (site code BOSP06). GeoQuest Associates, unpublished report"
Catsick Hill,Leicestershire,SK,575,184,Northamptonshire Archaeology,Medieval/Post-Medieval,Kiln,Base of the kiln,,GeoQuest Associates,65.9,0.8,3.3,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The magnetic vector did not overlap with the calibration curve. A tentative date of c. AD1475 was produced when the vector was extrapolated onto the curve,"M. Noel (2006) Archaeomagnetic analysis of fifteen limekilns at Catsick Hill, Barrow upon Soar, Leicestershire (site code BOSP06). GeoQuest Associates, unpublished report"
Catsick Hill,Leicestershire,SK,575,184,Northamptonshire Archaeology,Medieval/Post-Medieval,Kiln,Base of the kiln,,GeoQuest Associates,69.8,5.2,2.7,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The magnetic vector did not overlap with the calibration curve. A tentative date of c. AD1540 was produced when the vector was extrapolated onto the curve,"M. Noel (2006) Archaeomagnetic analysis of fifteen limekilns at Catsick Hill, Barrow upon Soar, Leicestershire (site code BOSP06). GeoQuest Associates, unpublished report"
Catsick Hill,Leicestershire,SK,575,184,Northamptonshire Archaeology,Medieval/Post-Medieval,Kiln,Stone base of the kiln,,GeoQuest Associates,72.6,12.7,2.5,1570,1600,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2006) Archaeomagnetic analysis of fifteen limekilns at Catsick Hill, Barrow upon Soar, Leicestershire (site code BOSP06). GeoQuest Associates, unpublished report"
Catsick Hill,Leicestershire,SK,575,184,Northamptonshire Archaeology,Medieval/Post-Medieval,Kiln,Burnt natural kiln base,,GeoQuest Associates,68.4,10.1,2.6,1510,1540,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2006) Archaeomagnetic analysis of fifteen limekilns at Catsick Hill, Barrow upon Soar, Leicestershire (site code BOSP06). GeoQuest Associates, unpublished report"
Catsick Hill,Leicestershire,SK,575,184,Northamptonshire Archaeology,Medieval/Post-Medieval,Kiln,Hard concretion on the base of the kiln,,GeoQuest Associates,66.3,10.9,1.5,1490,1510,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2006) Archaeomagnetic analysis of fifteen limekilns at Catsick Hill, Barrow upon Soar, Leicestershire (site code BOSP06). GeoQuest Associates, unpublished report"
Brownsea Island,Dorset,SZ,022,878,The National Trust,Post-Medieval,Kiln,Fired clay floor,1BR,GeoQuest Associates,62.2,7.9,3.1,1430,1475,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2007) Archaeomagnetic analysis of four brick-tile kilns on Brownsea Island, Poole Harbour, Dorset. GeoQuest Associates, unpublished report"
Brownsea Island,Dorset,SZ,022,878,The National Trust,Post-Medieval,Kiln,Fired clay floor,2BR,GeoQuest Associates,64.5,13.0,2.6,see notes,see note,Clark et al. (1988),FALSE,TRUE,The magnetic vector did not overlap with the calibration curve. A tentative date of AD1470-1520 was produced when the vector was extrapolated onto the curve. The date should also be treated with caution as it was based on less than 8 specimens,"M. Noel (2007) Archaeomagnetic analysis of four brick-tile kilns on Brownsea Island, Poole Harbour, Dorset. GeoQuest Associates, unpublished report"
A3 improvements,Surrey,SU,883,364,Wessex Archaeology,Post-Medieval,Kiln,A roughly made brick and stone lined kiln.,,GeoQuest Associates,75.3,3.5,2.1,1610,1660,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2007) Archaeomagnetic analysis of lime kiln contexts 15924 and 25427 on the A3 improvements, Hindhead, site code 61764. GeoQuest Associates, unpublished report"
A3 improvements,Surrey,SU,883,364,Wessex Archaeology,Post-Medieval,Kiln,"A well-made brick and mortar-lined kiln, some of the bricks were vitrified on their inner face.",,GeoQuest Associates,73.7,346.5,0.9,1715,1735,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2007) Archaeomagnetic analysis of lime kiln contexts 15924 and 25427 on the A3 improvements, Hindhead, site code 61764. GeoQuest Associates, unpublished report"
Space Foods Factory,Leicestershire,SK,858,188,Cambridgeshire County Council,Medieval/Post-Medieval,Hearth,Back of a fireplace. Samples collected from the heat-reddened stone along the front edge of the upper course of stones,,GeoQuest Associates,70.3,7.4,5.7,1520,1600,Clark et al. (1988),FALSE,TRUE,The date should be treated with caution as the alpha-95 value exceeded the critical value used in dating,"M. Noel (2007) Archaeomagnetic analysis of three contexts from a manor house at Space Foods Factory, Wymondham, Leicestershire. GeoQuest Associates, unpublished report"
Space Foods Factory,Leicestershire,SK,858,188,Cambridgeshire County Council,Medieval/Post-Medieval,Hearth,large rectangular floor hearth. The samples were collected from the heavily burnt sandstone slab base,,GeoQuest Associates,64.9,17.7,6.0,1060,1190,Clark et al. (1988),FALSE,TRUE,The date should be treated with caution as the alpha-95 value exceeded the critical value used in dating,"M. Noel (2007) Archaeomagnetic analysis of three contexts from a manor house at Space Foods Factory, Wymondham, Leicestershire. GeoQuest Associates, unpublished report"
Town's Piece,North Yorkshire,SD,975,671,Ingleborough Archaeology Group,Post-Medieval,Kiln,Samples were collected from the lintels of the flue and from the lining from the flue walls,,GeoQuest Associates,72.6,1.9,2.7,1620,1670,Clark et al. (1988),FALSE,TRUE,"Magnetic refraction was identified and a ""suitable correction"" applied","M. Noel (2007) Archaeomagnetic analysis of a lime kiln at Town's Piece, Kilnsey, Wharfdale (site code KY07). GeoQuest Associates, unpublished report"
"A3 improvements, Thursley",Surrey,SU,903,398,Wessex Archaeology,Post-Medieval,Kiln,"Sandstone blocks, fired earth and bricks used to construct the kiln. Feature half section prior to sampling, the base had not been excavated at the time of sampling",THU,GeoQuest Associates,72.2,2.3,2.9,1620,1675,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2007) Archaeomagnetic analysis of a lime/pottery kiln, context 25516 at Thursley on the A3 improvements, Hindhead. GeoQuest Associates, unpublished report"
Grovehill Industrial Estate,"East Riding, Yorkshire",TA,047,045,Humber Field Archaeology,Medieval,Kiln,Fired clay tile from the upper floor of the kiln,GIE15-25,GeoQuest Associates,62.2,4.6,2.4,see notes,see notes,Clark et al. (1988),FALSE,TRUE,"Two possible age ranges were produced: AD1280-1305, or AD1420-1440. The mean magnetic vector was based on less than 8 specimens","M. Noel (2008) Archaeomagnetic analysis of Medieval tile kilns 1027, 89, 1016, and 57, Beverley, East Riding of Yorkshire (site code ARG 2008). GeoQuest Associates, unpublished report"
Grovehill Industrial Estate,"East Riding, Yorkshire",TA,047,045,Humber Field Archaeology,Medieval,Kiln,Fired clay tile from the floor of the kiln,GIE26-36,GeoQuest Associates,62.9,11.8,2.5,1170,1220,Clark et al. (1988),FALSE,TRUE,The date should be treated with caution as it was based on less than 8 specimens,"M. Noel (2008) Archaeomagnetic analysis of Medieval tile kilns 1027, 89, 1016, and 57, Beverley, East Riding of Yorkshire (site code ARG 2008). GeoQuest Associates, unpublished report"
Grovehill Industrial Estate,"East Riding, Yorkshire",TA,047,045,Humber Field Archaeology,Medieval,Kiln,Mortar floor of kiln,GIE39-52,GeoQuest Associates,61.9,4.8,2.4,see notes,see notes,Clark et al. (1988),FALSE,TRUE,Two possible age ranges were produced: AD1280-1305 or AD1420-1440,"M. Noel (2008) Archaeomagnetic analysis of Medieval tile kilns 1027, 89, 1016, and 57, Beverley, East Riding of Yorkshire (site code ARG 2008). GeoQuest Associates, unpublished report"
Grovehill Industrial Estate,"East Riding, Yorkshire",TA,047,045,Humber Field Archaeology,Medieval,Kiln,Fired clay and tile from the inner face of the flue,GEI53-64,GeoQuest Associates,59.3,1.8,1.3,1390,1405,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2008) Archaeomagnetic analysis of Medieval tile kilns 1027, 89, 1016, and 57, Beverley, East Riding of Yorkshire (site code ARG 2008). GeoQuest Associates, unpublished report"
Upper St Martin's Lane,Greater London,TQ,301,809,Museum of London Archaeology,Early Medieval,Hearth,hard-fired clay hearth,,GeoQuest Associates,63.2,15.9,4.5,1100,1190,Clark et al. (1988),FALSE,TRUE,,"M. Noel (2008) Archaeomagnetic analysis of contexts 2338 and 2476, Upper St. Martin's Lane, Westminster (site code USM06). GeoQuest Associates, unpublished report"
Upper St Martin's Lane,Greater London,TQ,301,809,Museum of London Archaeology,Early Medieval,Hearth,Hard-fired red clay from the hearth,,GeoQuest Associates,69.1,12.4,3.6,see notes,see notes,Clark et al. (1988),FALSE,TRUE,Two possible age ranges were produced: AD495-550 or AD1525-1575. The earlier range seems more likely based on the archaeological evidence,"M. Noel (2008) Archaeomagnetic analysis of contexts 2338 and 2476, Upper St. Martin's Lane, Westminster (site code USM06). GeoQuest Associates, unpublished report"
Wood Hall,North Yorkshire,SE,530,200,North Yorkshire County Council,Medieval,Kiln,Dome of slaked lime over a base of limestone blocks. The surrounding earth had become heat-reddened,WHA1-16,GeoQuest Associates,64.2,359.7,2.3,see notes,see notes,Clark et al. (1988),FALSE,TRUE,"The magnetic vector did not overlap with the calibration curve, probably due to the kiln tilting slightly since it was last heated. A tentative date of AD1290-1320 was produced when the vector was extrapolated onto the curve","M. Noel (1991) Archaeomagnetic study of contexts 669 and 675, Wood Hall, North Yorks. GeoQuest Associates, unpublished report"
Wood Hall,North Yorkshire,SE,530,200,North Yorkshire County Council,Medieval,Kiln,Area of reddened sandy silt and fired clay,WHA17-34,GeoQuest Associates,56.2,18.3,5.6,see notes,see notes,Clark et al. (1988),FALSE,TRUE,"The magnetic vector did not overlap with the calibration curve, possibly due to the feature tilting slightly since it was last fired. A tentative date of AD1180-1260 was produced when the vector was extrapolated onto the calibration curve","M. Noel (1991) Archaeomagnetic study of contexts 669 and 675, Wood Hall, North Yorks. GeoQuest Associates, unpublished report"
Durham Police Hostel,Durham,NZ,277,422,Northern Archaeological Associates,Medieval,Hearth,"substantial sub-circular structure containing ash, coal, fired clay and sandstone. Samples were collected from the areas of fired clay and stone",DPH,GeoQuest Associates,63.2,0.1,4.5,see notes,see notes,Clark et al. (1988),FALSE,TRUE,Two possible age ranges were produced: AD1260-1340 or AD1380-1460. Fragments of 13th century Scarborough ware pottery may suggest that the earlier range is more likely,"M. Noel (1993) Archaeomagnetic study of hearth 150, Durham Police Hostel, City of Durham. GeoQuest Associates, unpublished report"
Niblett Hall,Greater London,TQ,313,811,Museum of London Archaeology,Medieval,Kiln,"Tile kiln constructed of brick earth and coursed tiles, some of which were vitrified. Samples were collected from the fired clay and tiles",NIB,GeoQuest Associates,57.1,18.6,2.6,see notes,see notes,Clark et al. (1988),FALSE,TRUE,"The magnetic vector did not overlap with the calibration curve, possibly due to the deflection of the field by nearby buildings. A tentative date of AD1210-1280 was produced when the vector was extrapolated onto the curve","M. Noel (1993) Archaeomagnetic study of a tile kiln at Niblett Hall, City of London. GeoQuest Associates, unpublished report"
Greenhall Whiteley Brewery,Cheshire,SJ,610,860,Gifford & Partners (Cheshire),Roman Britain,Kiln,Fired clay from the base of a kiln,GWH,GeoQuest Associates,63.2,359.2,4.6,see notes,see notes,Clark et al. (1988),FALSE,TRUE,Two possible age ranges were produced: AD140-215 or AD290-300.,"M. Noel (1993) Archaeomagnetic study of context 85/86 and 87 at Greenhill Whiteley Brewery. GeoQuest Associates, unpublished report"
Rawcliffe Manor,North Yorkshire,SE,580,550,York Archaeological Trust,Medieval,Hearth,well-preserved on-edge tile hearth. Slightly subsided in a northerly direction,RAW1-19,GeoQuest Associates,69.2,18.1,3.9,see notes,see notes,Clark et al. (1988),FALSE,TRUE,Feature suffered from magnetic refraction - a suitable correction was applied. The magnetic vector did not overlap with the calibration curve. A tentative date of AD1500-1560 was produced when the magnetic vector was extrapolated onto the curve,"M. Noel (1993) Archaeomagnetic study of context 6340 and 6341 at Rawcliffe Manor, York. GeoQuest Associates, unpublished report"
Rawcliffe Manor,North Yorkshire,SE,580,550,York Archaeological Trust,Medieval,Hearth,A well-preserved on-edge tile hearth,RAW20-29,GeoQuest Associates,53.6,355.1,5.8,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The magnetic vector did not overlap with the calibration curve. A tentative date of AD1340-1380 was produced when the vector was extrapolated onto the curve. The alpha-95 value exceeded the critical value of 5° used in dating,"M. Noel (1993) Archaeomagnetic study of context 6340 and 6341 at Rawcliffe Manor, York. GeoQuest Associates, unpublished report"
Spa Clough,Greater Manchester,SD,999,104,Greater Manchester Archaeological Unit,Medieval,Area of burning,Area of reddened clay,CAS14-24,GeoQuest Associates,62.7,10.1,1.9,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The magnetism was very soft so no demagnetisation was carried out. Two possible age ranges were produced: AD1175-122 or AD1430-1460,"M. Noel (1993) Archaeomagnetic study of contexts 347, 353, and 359 at Spa Clough, Castleshaw. GeoQuest Associates, unpublished report"
Wrigley's Furnacing site,Greater Manchester,SD,997,105,Greater Manchester Archaeological Unit,Medieval,Furnace,Fired clay sampled from the base of the kiln and from the axis of the tapping channel,SPA,GeoQuest Associates,63.5,356.3,8.6,1290,1330,Clark et al. (1988),FALSE,TRUE,The date should be treated with caution as the alpha-95 value exceeds the critical value of 5° used in archaeomagnetic dating,"M. Noel (1994) Archaeomagnetic study of contexts 445, 450, and 454 at Wrigley's Furnacing site. GeoQuest Associates, unpublished report"
Hull Magistrates Court,"East Riding, Yorkshire",TA,100,280,Humberside County Council,Medieval,Hearth,On-edge tile hearth beneath the knave of the friary church,HUL,GeoQuest Associates,63.5,13.0,2.5,1160,1200,Clark et al. (1988),FALSE,TRUE,Sun compass used to correct for magnetic variation - resulted in an eastward rotation of the mean archaeomagnetic vector by 15.8°. This changed the declination value from 357.2° to 13.0°.,"M. Noel (1994) Archaeomagnetic analysis of two features on the site of Hull Magistrates Court. GeoQuest Associates, unpublished report"
Sandy Lane,South Yorkshire,SK,490,910,West Yorkshire Archaeological Service,Medieval,Kiln,Limestone from the kiln,STA13-26,GeoQuest Associates,72.2,8.7,1.8,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The magnetic vector did not overlap the calibration curve; the magnetic variation may have been affected by the magnetic field in the kiln structures A tentative date of AD1560-1600 was produced when the vector was extrapolated onto the calibration curve,"M. Noel (1995) Archaeomagnetic analysis of lime kilns at Sandy Lane, Bramley, South Yorkshire. GeoQuest Associates, unpublished report"
Sandy Lane,South Yorkshire,SK,490,910,West Yorkshire Archaeological Service,Medieval,Kiln,Limestone from the kiln,STA27-39,GeoQuest Associates,67.1,6.6,2.9,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The magnetic vector did not overlap with the calibration curve; the magnetic variation may have been affected by the magnetic field in the kiln structures A tentative date of AD1470-1520 was produced when the vector was extrapolated onto the curve,"M. Noel (1995) Archaeomagnetic analysis of lime kilns at Sandy Lane, Bramley, South Yorkshire. GeoQuest Associates, unpublished report"
Sandy Lane,South Yorkshire,SK,490,910,West Yorkshire Archaeological Service,Medieval,Kiln,Limestone from the kiln,STA54-71,GeoQuest Associates,71.8,4.0,1.7,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The magnetic vector did not overlap with the calibration curve; the magnetic variation may have been affected by the magnetic field in the kiln structures. A tentative date of AD1550-1590 was produced when the vector was extrapolated onto the curve.,"M. Noel (1995) Archaeomagnetic analysis of lime kilns at Sandy Lane, Bramley, South Yorkshire. GeoQuest Associates, unpublished report"
Stockbridge,Tyne and Wear,NZ,254,640,Newcastle City Archaeological Unit,Medieval,Hearth,A substantial hearth constructed largely of flags,STO1-14a,GeoQuest Associates,64.6,7.8,2.2,1440,1470,Clark et al. (1988),FALSE,TRUE,,"M. Noel (1995) Archaeomagnetic analysis of hearths at Stockbridge, Newcastle upon Tyne. GeoQuest Associates, unpublished report"
Stockbridge,Tyne and Wear,NZ,254,640,Newcastle City Archaeological Unit,Medieval,Hearth,A burnt surface of irregular flags,STO14b-22,GeoQuest Associates,65.7,359.6,1.7,1455,1475,Clark et al. (1988),FALSE,TRUE,,"M. Noel (1995) Archaeomagnetic analysis of hearths at Stockbridge, Newcastle upon Tyne. GeoQuest Associates, unpublished report"
Stockbridge,Tyne and Wear,NZ,254,640,Newcastle City Archaeological Unit,Medieval,Hearth,"Stone hearth constructed of massive sandstone blocks, sloping downwards on a bearing of 268°",STO50-67,GeoQuest Associates,66.7,6.9,1.5,1470,1495,Clark et al. (1988),FALSE,TRUE,,"M. Noel (1995) Archaeomagnetic analysis of hearths at Stockbridge, Newcastle upon Tyne. GeoQuest Associates, unpublished report"
Stockbridge,Tyne and Wear,NZ,254,640,Newcastle City Archaeological Unit,Medieval,Hearth,Circular array of sandstone flags set into a bed of grey clay,STO100-116,GeoQuest Associates,68.1,3.6,7.0,see notes,see notes,Clark et al. (1988),FALSE,TRUE,"The magnetic vector did not overlap with the calibration curve, was based on less than 8 specimens, and the alpha-95 value exceeded the critical value of 5°. A tentative date of AD1455-1550 was produced when the vector was extrapolated onto the curve","M. Noel (1995) Archaeomagnetic analysis of hearths at Stockbridge, Newcastle upon Tyne. GeoQuest Associates, unpublished report"
Marfield Quarry Extension,North Yorkshire,SE,209,829,MAP Archaeological Consultancy Ltd,Post-Medieval,Kiln,Kiln constructed of large cobbles of sandstone and limestone set into a matrix of fired red clay,MAR19-25,GeoQuest Associates,73.5,347.9,2.1,see notes,see notes,Clark et al. (1988),FALSE,TRUE,Inclination values suffered shallowing due to magnetic refraction. Inclination values therefore extrapolated onto the curve to produce a tentative date of AD1650-1740. The date should be treated with caution as it was based on less than 8 specimens,"M. Noel (1996) Archaeomagnetic analysis of kilns at Marfield Quarry Extension, Masham. GeoQuest Associates, unpublished report"
Marfield Quarry Extension,North Yorkshire,SE,209,829,MAP Archaeological Consultancy Ltd,Post-Medieval,Kiln,Kiln constructed of large cobbles of sandstone and limestone set into a matrix of fired clay,MAR9-18,GeoQuest Associates,72.6,354.5,3.0,see notes,see note,Clark et al. (1988),FALSE,TRUE,Inclination values suffered shallowing due to magnetic refraction. Inclination values therefore extrapolated onto the curve to produce a tentative date of AD1650-1740. The date should be treated with caution as it was based on less than 8 specimens,"M. Noel (1996) Archaeomagnetic analysis of kilns at Marfield Quarry Extension, Masham. GeoQuest Associates, unpublished report"
Marfield Quarry Extension,North Yorkshire,SE,209,829,MAP Archaeological Consultancy Ltd,Post-Medieval,Kiln,Kiln constructed of large cobbles of sandstone and limestone set into a matrix of fired clay,MAR1-8,GeoQuest Associates,73.4,352.9,4.8,see notes,see notes,Clark et al. (1988),FALSE,TRUE,Inclination values suffered shallowing due to magnetic refraction. Inclination values were therefore extrapolated onto the curve to produce a tentative date of AD1650-1740. The date should be treated with caution as it was based on less than 8 specimens,"M. Noel (1996) Archaeomagnetic analysis of kilns at Marfield Quarry Extension, Masham. GeoQuest Associates, unpublished report"
Wootton Quarr,Isle of Wight,SZ,550,930,English Heritage,Medieval,Kiln,Tile and fired clay from the kiln,QA,GeoQuest Associates,57.8,2.5,1.9,1400,1425,Clark et al. (1988),FALSE,TRUE,,"M. Noel (1996) Archaeomagnetic analysis of samples from a kiln at Wootton Quarr, Isle of Wight. GeoQuest Associates, unpublished report"
Marfield Quarry Extension,North Yorkshire,SE,209,829,MAP Archaeological Consultancy Ltd,Post-Medieval,Kiln,Circular depression 1.5m diameter formed of heat reddened clay soil with blocks of limestone in the base,MAR1-14,GeoQuest Associates,74.5,350.6,2.4,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The feature may have suffered from magnetic refraction causing a shallowing of the inclination values. A tentative date of AD1680-1730 was produced when the inclination values were extrapolated onto the curve,"M. Noel (1996) Archaeomagnetic analysis of two burnt features at Marfield, North Yorkshire. GeoQuest Associates, unpublished report"
Marfield Quarry Extension,North Yorkshire,SE,209,829,MAP Archaeological Consultancy Ltd,Post-Medieval,Kiln,"A 1.8m diameter sub-circular hollow feature with a patchy rim of reddened soil. The floor contained randomly distributed limestone, some of which was burnt.",MAR20-30,GeoQuest Associates,75.2,11.1,3.7,1585,1650,Clark et al. (1988),FALSE,TRUE,,"M. Noel (1996) Archaeomagnetic analysis of two burnt features at Marfield, North Yorkshire. GeoQuest Associates, unpublished report"
Ellingham Dairy Farm,Norfolk,TM,370,910,Norfolk Archaeological Unit,Roman Britain,Kiln,"Kiln constructed almost entirely of mortaria rims set into a dark red matrix of fired clay: context 69 = pedestal, 111 = wall, 110 = lower floor of the kiln",ELL,GeoQuest Associates,61.9,12.1,4.2,see notes,see notes,Clark et al. (1988),FALSE,TRUE,Local disturbance of geomagnetic field due to a nearby steel-clad building deflected the orientation of the samples by approx. 8° eastward. Tentative dates of AD160-225 or AD270-300 were produced when the magnetic vector was extrapolated onto the curve,"M. Noel (1996) Archaeomagnetic analysis of a Romano-British kiln at Ellingham, Norfolk. GeoQuest Associates, unpublished report"
Neasham Abbey,Durham,NZ,320,100,Northern Archaeological Associates,Medieval,Hearth,Substantial hearth constructed using flagstones set on edge with a frame of dressed sandstone blocks,NEA,GeoQuest Associates,70.0,12.6,2.2,1520,1550,Clark et al. (1988),FALSE,TRUE,,"M. Noel (1996) Archaeomagnetic analysis of hearth context 068 at Neasham Abbey, Co. Durham. GeoQuest Associates, unpublished report"
Heath Farm,Norfolk,TG,280,090,Norfolk Archaeological Unit,Roman Britain,Kiln,Sub-circular kiln 0.9m diameter with a well-preserved clay floor. Samples collected from the kiln floor and the upper parts of the walls,POS1-12,GeoQuest Associates,64.8,358.5,1.2,135,160,Clark et al. (1988),FALSE,TRUE,,"M. Noel (1997) Archaeomagnetic study of three Romano-British kilns at Postwick, Norwich. GeoQuest Associates, unpublished report"
Heath Farm,Norfolk,TG,280,090,Norfolk Archaeological Unit,Roman Britain,Kiln,"Sub-circular kiln (1.1m diameter). Samples collected from the rim of the kiln, the central pedestal, the base and the arch above the stoke-hole",POS13-25,GeoQuest Associates,64.6,357.2,2.3,130,170,Clark et al. (1988),FALSE,TRUE,,"M. Noel (1997) Archaeomagnetic study of three Romano-British kilns at Postwick, Norwich. GeoQuest Associates, unpublished report"
Heath Farm,Norfolk,TG,280,090,Norfolk Archaeological Unit,Roman Britain,Kiln,1m diameter kiln with a central pedestal. Samples collected from the top of the pedestal and the upper inside face of the kiln wall,POS26-38,GeoQuest Associates,64.6,356.6,3.4,100,160,Clark et al. (1988),FALSE,TRUE,,"M. Noel (1997) Archaeomagnetic study of three Romano-British kilns at Postwick, Norwich. GeoQuest Associates, unpublished report"
Stanley Grange,Derbyshire,SK,427,406,Trent and Peak Archaeological Trust,Medieval,Furnace,Isolated area of burnt clay,SGD21-30,GeoQuest Associates,58.2,9.1,6.8,see notes,see notes,Clark et al. (1988),FALSE,TRUE,"The date should be treated with caution as based on less than 8 specimens, and the alpha-95 value exceeded the critical value of 5° used in dating. Two possible age ranges were produced: AD1220-1280 or AD1400-1440","M. Noel (1997) Archaeomagnetic study of four fired features at Stanley Grange, Derbyshire. GeoQuest Associates, unpublished report"
Bonemills Farm,Cambridgeshire,TF,040,010,Cambridgeshire Archaeology,Early Medieval,Furnace,"Base and parts of the lining of a furnace formed of baked clay, sand and slag",BMF,GeoQuest Associates,19.3,55.5,8.6,1540,1700,Clark et al. (1988),FALSE,TRUE,The date should be treated with caution as the alpha-95 value greatly exceeded the critical value of 5° used in dating. The date does not agree with the estimated age (Early Medieval),"M. Noel (1997) Archaeomagnetic study of a fired feature at Bonemills Farm, Wittering, Cambridgeshire. GeoQuest Associates, unpublished report"
Creake Road,Norfolk,TF,836,419,Norfolk Archaeological Unit,Early Medieval/Medieval,Oven,Indistinct circular deposit of burnt clay and ash with a hard rid of partly fired clay,BMA11-20,GeoQuest Associates,59.6,359.7,9.9,1260,1440,Clark et al. (1988),FALSE,TRUE,The date should be treated with caution as it was based on less than 8 specimens and the alpha-95 value greatly exceeded the critical value of 5° used in dating.,"M. Noel (1998) Archaeomagnetic study of contexts 666,737, and 973, Creake Road, Burnham Market, Norfolk. GeoQuest Associates, unpublished report"
Creake Road,Norfolk,TF,836,419,Norfolk Archaeological Unit,Early Medieval/Medieval,Oven,"c.2m long 'boat-shaped' oven lined with red, partly fired clay",BMA1-10,GeoQuest Associates,74.5,20.6,10.0,600,980,Clark et al. (1988),FALSE,TRUE,The date should be treated with caution as the results were scattered - the alpha-95 value greatly exceeded the critical value of 5° used in dating,"M. Noel (1998) Archaeomagnetic study of contexts 666,737, and 973, Creake Road, Burnham Market, Norfolk. GeoQuest Associates, unpublished report"
21 Woods Lane,Northamptonshire,SP,760,431,Woodfield Architectural and Archaeological Services,Medieval,Kiln,Pottery kiln constructed of limestone blocks and tile fragments bedded into fired clay and mortar. At least two phases of relining was noted,POT,GeoQuest Associates,71.4,10.7,1.7,1550,1570,Clark et al. (1988),FALSE,TRUE,Two possible age ranges were produced: AD1550-1570 or c. 9th century AD. The earlier date was not supported by the pottery evidence from the site,"M. Noel (1998) Archaeomagnetic study of a pottery kiln at 21 Woods Lane, Poterspury, Northants. GeoQuest Associates, unpublished report"
West Chevington Chapel,Northumberland,NZ,241,981,The Archaeological Practice Ltd,Early Medieval,Floor,Burnt floor surface of fired clay and stone,CHE,GeoQuest Associates,61.5,12.8,10.1,1160,1290,Clark et al. (1988),FALSE,TRUE,The date should be treated with caution as it was based on less than 8 specimens and the results were scattered - the alpha-95 value greatly exceeded the critical value of 5° used in dating,"M. Noel (1997) Archaeomagnetic study of contexts at West Chevington Chapel, Northumberland. GeoQuest Associates, unpublished report"
Bremenium,Northumberland,NY,830,980,Archaeology Department (School of Historical Studies),Roman Britain,Hypocaust,Stone flagged base of a flue for the hypocaust heating system,HR,GeoQuest Associates,66.6,357.3,2.8,130,175,Clark et al. (1988),FALSE,TRUE,,"M. Noel (1997) Archaeomagnetic study of a hypocaust flue and floor at Bremenium, Northumberland. GeoQuest Associates, unpublished report"
Stanley Grange,Derbyshire,SK,427,406,Trent and Peak Archaeological Trust,Medieval,Furnace,Base and lining of the iron smelting furnace,SGD1-10,GeoQuest Associates,61.2,3.3,4.0,1270,1315,Clark et al. (1988),FALSE,TRUE,The date should be treated with caution as it is based on less than 8 specimens,"M. Noel (1997) Archaeomagnetic study of a further 3 fired contexts at Stanley Grange, Derbyshire. GeoQuest Associates, unpublished report"
Stanley Grange,Derbyshire,SK,427,406,Trent and Peak Archaeological Trust,Medieval,Floor,Base and lining of an iron smelting furnace,SGD11-20,GeoQuest Associates,54.8,8.0,3.2,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The date should be treated with caution as it was based on less than 8 specimens. The feature may also have suffered from magnetic refraction. The inclination values were extrapolated onto the curve to produce a tentative date of AD1245-1285,"M. Noel (1997) Archaeomagnetic study of a further 3 fired contexts at Stanley Grange, Derbyshire. GeoQuest Associates, unpublished report"
Stanley Grange,Derbyshire,SK,427,406,Trent and Peak Archaeological Trust,Medieval,Furnace,Base and lining of an iron smelting furnace,SGD21-31,GeoQuest Associates,60.0,8.7,3.3,1235,1285,Clark et al. (1988),FALSE,TRUE,,"M. Noel (1997) Archaeomagnetic study of a further 3 fired contexts at Stanley Grange, Derbyshire. GeoQuest Associates, unpublished report"
"NFU building, St Saviourgate",North Yorkshire,SE,606,519,MAP Archaeological Consultancy Ltd,Medieval,Hearth,"NW quadrant of a rectangular hearth formed of loosely arranged, rounded sandstone cobbles set in a fired clay and mortar matrix",SSA,GeoQuest Associates,58.4,17.4,5.0,see notes,see notes,Clark et al. (1988),FALSE,TRUE,"A steel skip potentially disturbed the local geomagnetic field, causing the inaccurate orientation of the samples in the field. If the declination values are extrapolated onto the curve a tentative date of AD1325-1420 is produced.","M.Noel (1997) Archaeomagnetic study of fired context 1113 at the NFU building excavation, St Saviourgate, York. GeoQuest Associates, unpublished report"
"Segedunum, Wallsend",Tyne and Wear,NZ,300,660,Tyne and Wear Museum Service,Roman Britain,Hearth,Fired sandstone blocks set in a red clay matrix,,GeoQuest Associates,66.7,7.2,5.1,295,485,Clark et al. (1988),FALSE,TRUE,,"M. Noel (1997) Archaeomagnetic study of fired contexts 5934 and 5935 at Wallsend Roman fort, Newcastle upon Tyne. GeoQuest Associates, unpublished report"
Blanket Row,"East Riding, Yorkshire",TA,009,284,Northern Archaeological Associates,Medieval,Hearth,Rectangular brick hearth,BLR,GeoQuest Associates,61.2,5.6,7.5,see notes,see note,Clark et al. (1988),FALSE,TRUE,Two possible age ranges were produced: AD1235-1315 or AD1390-1460. The alpha-95 value exceeded the critical value of 5° used in dating,"M. Noel (1998) Archaeomagnetic study of two hearths excavated at Blanket Row, Hull. GeoQuest Associates, unpublished report"
Girton Quarry,Nottinghamshire,SK,826,666,Trent and Peak Archaeological Trust,Early Medieval,Floor,Burnt floor of red clay,GIR,GeoQuest Associates,76.6,6.3,6.4,650,815,Clark et al. (1988),FALSE,TRUE,Two dates were produced: AD650-815 or AD1600-1700. The archaeological evidence supports the earlier date. The date should be treated with caution as the magnetic vector was scattered - the alpha-95 value exceeded the critical value of 5° use in dating,"M. Noel (1998) Archaeomagnetic study of a burnt surface (context 1716) at Girton Quarry, Notts. GeoQuest Associates, unpublished report"
Harton Hildenley Water main,North Yorkshire,SE,700,610,Northern Archaeological Associates,Roman Britain,Hearth,A bowl-shaped depression 1.2m diameter with one or more layers of soft red clay lining,HHM,GeoQuest Associates,65.6,319.5,7.6,see notes,see notes,Clark et al. (1988),FALSE,TRUE,"Steel pipes disturbed the local geomagnetic field, affecting the accurate orientation of the samples. The declination values were extrapolated onto the curve, producing tentative ranges: AD60-205, AD270-520, AD1000-1210, AD1440-1540. Alpha-95 exceeded 5°","M. Noel (1998) Archaeomagnetic study of a hearth on the route of the Harton Hildenley water main. GeoQuest Associates, unpublished report"
Grange Road,"East Riding, Yorkshire",SE,651,216,York Archaeological Trust,Medieval,Kiln,Pottery kiln with six radial flues,WCO1-14,GeoQuest Associates,64.8,10.7,1.9,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The magnetic vector did not overlap with the calibration curve. Tentative dates of AD1150-1190 or AD1455-1480 were produced when the vector was extrapolated onto the curve. The pottery evidence supports the 12th century date,"M. Noel (1999) Archaeomagnetic study of two kilns excavated at West Cowick, Leeds. GeoQuest Associates, unpublished report"
Grange Road,"East Riding, Yorkshire",SE,651,216,York Archaeological Trust,Medieval,Kiln,A pottery kiln with three flues visible. The feature was half excavated at the time of sampling,WCO15-23,GeoQuest Associates,60.2,4.9,1.5,1405,1425,Clark et al. (1988),FALSE,TRUE,,"M. Noel (1999) Archaeomagnetic study of two kilns excavated at West Cowick, Leeds. GeoQuest Associates, unpublished report"
Captain's Pingle,Derbyshire,SK,340,270,Trent and Peak Archaeological Trust,Roman Britain,Pit,Fired base of a pit surrounded by fired and unfired clay with fired cracked pebbles,CAP113-124,GeoQuest Associates,60.9,358.8,1.4,200,220,Clark et al. (1988),FALSE,TRUE,Two age ranges were produced: AD200-220 or AD1310-1330AD. The 3rd century AD date was supported by the archaeological evidence.,"M. Noel (1999) Archaeomagnetic study of contexts 0039, 0041, 0051 & 0052 at Captain's Pingle, Barrow on Trent. GeoQuest Associates, unpublished report"
Caerlaverock Old Castle,Dumfries and Galloway,NY,027,654,SUAT Ltd,Medieval,Area of burning,Area of burnt clay that may pre-date the use of the castle,CAE23-35,GeoQuest Associates,59.6,7.2,3.1,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The magnetic vector did not overlap with the calibration curve. A tentative date of AD1250-1275 was produced when the vector was extrapolated onto the curve,"M. Noel (1999) Archaeomagnetic study of contexts 175, 544 and 461 at Caerlaverock Old Castle, Dumfries. GeoQuest Associates, unpublished report"
Caerlaverock Old Castle,Dumfries and Galloway,NY,027,654,SUAT Ltd,Medieval,Area of burning,Area of burnt clay that may pre-date the use of the castle,CAE36-47,GeoQuest Associates,62.0,5.7,4.3,1250,1310,Clark et al. (1988),FALSE,TRUE,Two possible age ranges were produced: AD1250-1310 or AD1400-1440. The earlier date was supported by the archaeological evidence,"M. Noel (1999) Archaeomagnetic study of contexts 175, 544 and 461 at Caerlaverock Old Castle, Dumfries. GeoQuest Associates, unpublished report"
Marfield Quarry Extension,North Yorkshire,SE,209,829,MAP Archaeological Consultancy Ltd,Post-Medieval,Kiln,"Lime kiln 2x1.8x1.5m, lined with clay",MAR1-15,GeoQuest Associates,75.1,334.0,1.6,1760,1790,Clark et al. (1988),FALSE,TRUE,,"M. Noel (1999) Archaeomagnetic study of a kiln at Marfield Quarry, Masham, North Yorkshire. GeoQuest Associates, unpublished report"
Cawthorns Camp,North Yorkshire,SE,782,900,Central Excavation Unit,Roman/Early Medieval,Floor,Burnt floor (hearth?) of a grubenhaus,CAW9-22 (sample 638),GeoQuest Associates,65.3,0.2,6.9,see notes,see notes,Clark et al. (1988),FALSE,TRUE,"Two age ranges were produced: AD1420-1490 or AD1275-1325. Neither of these ranges agree with the expected date of 9th-10th century AD. The date should be treated with caution as the magnetism was weak, and the alpha-95 value exceeded 5°","M. Noel (1999) Archaeomagnetic study of samples 637 and 638 from Cawthorn Camp B. GeoQuest Associates, unpublished report"
Colstoun Mains Farm,East Lothian,NT,519,710,SUAT Ltd,Medieval,Kiln,Fired clay and stone from a pottery kiln,COL,GeoQuest Associates,62.8,350.6,4.2,see notes,see notes,Clark et al. (1988),FALSE,TRUE,The magnetic vector did not overlap with the calibration curve. A tentative date of AD1320-1350 was produced when the vector was extrapolated onto the curve,"M. Noel (1999) Archaeomagnetic study of a pottery kiln at Colstoun Mains Farm, East Lothian. GeoQuest Associates, unpublished report"
Tipping Street,Staffordshire,SJ,907,231,Oxford Archaeology,Early Medieval,Kiln,"The walls and central pedestal of a pottery kiln. The kiln was 1.25m in diameter, dug into sand which was then lined with clay.",AM169,"Archaeomagnetic Research Group, University of Bradford",65.3,28.6,3.1,880,1090,Rendate v.1.0.0.4b,FALSE,TRUE,Two age ranges were produced: 1000-745BC or AD880-1090. The earlier date was discounted based on the archaeological evidence,"S.J. Clelland & C.M. Batt (2010) Archaeomagnetic dating of a kiln feature at Tipping Street, Stafford. Archaeomagnetic Research Group, University of Bradford. Unpublished report"
Simpson's Malt,West Yorkshire,SE,462,228,West Yorkshire Archaeological Service,Early Medieval,Kiln,Fired clay base of the kiln,SML08-01-20,"Archaeomagnetic Research Group, University of Bradford",72.3,11.7,4.8,580,1015,Rendate v.1.0.0.4b,FALSE,TRUE,"Three possible age ranges were produced: 1000-300BC, AD580-1015, or AD1615-1835. The middle age range was supported by the pottery evidence","D.P. Greenwood & C.M. Batt (2009) Archaeomagnetic dating of a pottery kiln from the excavations at Simpson's Malt, Pontefract. Archaeomagnetic Research Group, University of Bradford, unpublished report"
Worcester Library & History Centre,Worcestershire,SO,846,550,Worcestershire County Council (Historic Environment and Archaeology Service),Roman Britain,Oven,basal layer of fired clay within the oven,6364-01-25,"Archaeomagnetic Research Group, University of Bradford",61.5,14.4,3.7,see notes,see notes,Rendate v.1.0.0.4b,FALSE,TRUE,"Four possible age ranges were produced: 1000-992BC, 989-986BC, AD980-1305, or AD1447-1560, but the estimated age of the feature based on archaeological evidence was Roman (AD43-410). The feature may have suffered undetected post-depositional disturbance.","D.P. Greenwood & C.M. Batt (2009) Archaeomagnetic dating of two fired features from the excavations at the site of the new Worcester Library and History Centre, The Butts, Worcester. Archaeomagnetic Research Group, University of Bradford, unpublished report"
Worcester Library & History Centre,Worcestershire,SO,846,550,Worcestershire County Council (Historic Environment and Archaeology Service),Roman Britain,Oven,Fired clay from the basal layer of the oven,6365-01-20,"Archaeomagnetic Research Group, University of Bradford",61.2,3.9,2.4,200,352,Rendate v.1.0.0.4b,FALSE,TRUE,"Three possible age ranges were produced: AD200-349, AD350-352, and AD1145-1563. The later date was discounted based on the archaeological evidence. The remaining two age ranges were combined as they were only separated by 1 year","D.P. Greenwood & C.M. Batt (2009) Archaeomagnetic dating of two fired features from the excavations at the site of the new Worcester Library and History Centre, The Butts, Worcester. Archaeomagnetic Research Group, University of Bradford, unpublished report"
Forster End Drove,Norfolk,TL,558,827,Archaeological Solutions,Roman Britain,Kiln,A well preserved circular pottery kiln approximately 1.5m diameter composed of yellow-red fired clay,F1: 2118,"Archaeomagnetic Research Group, University of Bradford",69.9,356.1,4.4,-150,100,Clark et al. (1988),FALSE,TRUE,,"C.M. Batt & A. Trapenese (2005) Archaeomagnetic dating of 3 features from excavations at East Winch, Norfolk. Archaeomagnetic Research Group, University of Bradford. Unpublished report"
Forster End Drove,Norfolk,TL,558,827,Archaeological Solutions,Roman Britain,Kiln,U-shaped kiln constructed of compact grey clay. The feature was disturbed in some areas by later quarrying activity,F3: 2133,"Archaeomagnetic Research Group, University of Bradford",58.6,353.2,3.9,200,250,Clark et al. (1988),FALSE,TRUE,,"C.M. Batt & A. Trapenese (2005) Archaeomagnetic dating of 3 features from excavations at East Winch, Norfolk. Archaeomagnetic Research Group, University of Bradford. Unpublished report"
Corby Prior Hall,Northamptonshire,SP,929,901,Archaeological Project Services,Roman Britain,Furnace,Partially collapsed furnace constructed of fired clay,CF3B (AM80),"Archaeomagnetic Research Group, University of Bradford",65.6,348.7,3.5,see notes,see notes,Rendate v.1.0.0.4b,FALSE,TRUE,"Three possible age ranges were produced: 460-245BC, AD330-630 or AD1863-present. The Post-Medieval period date was discounted based on the archaeological evidence","S.J. Clelland & C.M. Batt (2006) Archaeomagnetic dating of a possible iron smelting furnace from the excavations at Corby Prior Hall, Northamptonshire. Archaeomagnetic Research Group, University of Bradford. Unpublished report BR06-AM80"
Bolsterstone Glass House,South Yorkshire,SK,272,984,South Yorkshire Archaeology Unit,Post-Medieval,Furnace,Annealing furnace flue constructed of sandstone blocks: the northerly lintel and footings of the central arch were sampled,BSA,"Centre for Environmental Magnetism and Palaeomagnetism, University of Lancaster",71.5,337.6,1.8,1800,1870,Clark et al. (1988),FALSE,TRUE,,"V. Karloukovski & M.W. Hounslow (2006). Report on the archaeomagnetic dating of the remains of the Bolsterstone glass house, Stocksbridge, Sheffield. CEMP, University of Lancaster, unpublished report"
Bolsterstone Glass House,South Yorkshire,SK,272,984,South Yorkshire Archaeology Unit,Post-Medieval,Furnace,Glass furnace sieges constructed of sandstone blocks. The sandstone blocks from the walls and fired clay layers at the base of the feature were sampled,BSB,"Centre for Environmental Magnetism and Palaeomagnetism, University of Lancaster",75.1,350.6,1.3,1690,1720,Clark et al. (1988),FALSE,TRUE,1.2°,"V. Karloukovski & M.W. Hounslow (2006). Report on the archaeomagnetic dating of the remains of the Bolsterstone glass house, Stocksbridge, Sheffield. CEMP, University of Lancaster, unpublished report"
Cladh Hallan,Outer Hebrides/Na h-Eileana Siar,NF,732,219,"Department of Archaeology, University of Sheffield",Bronze Age/Iron Age,Hearth,Soft red fired clay,CH(A)/AM74,"Archaeomagnetic Research Group, University of Bradford",73.5,48.3,2.4,-700,-560,Clark et al. (1988),FALSE,TRUE,"The dates should be treated with caution as the calibration curve is not well established for the earlier periods, and the limit of the curve is 1000BC","C.M. Batt (2000) Archaeomagnetic dating of three hearths from excavations at Cladh Hallan, South Uist. Archaeomagnetic Research Group, University of Bradford. Unpublished report"
Cladh Hallan,Outer Hebrides/Na h-Eileana Siar,NF,732,219,"Department of Archaeology, University of Sheffield",Bronze Age/Iron Age,Hearth,Soft red fired clay,CH(B)/AM75,"Archaeomagnetic Research Group, University of Bradford",70.7,45.0,2.3,-850,-650,Clark et al. (1988),FALSE,TRUE,"The date should be treated with caution as the calibration curve is not well defined for the earlier periods, and the limit of the curve is 1000BC","C.M. Batt (2000) Archaeomagnetic dating of three hearths from excavations at Cladh Hallan, South Uist. Archaeomagnetic Research Group, University of Bradford. Unpublished report"
Cladh Hallan,Outer Hebrides/Na h-Eileana Siar,NF,732,219,"Department of Archaeology, University of Sheffield",Bronze Age/Iron Age,Hearth,Lower hearth composed of soft red fired clay,CH(C)/AM76,"Archaeomagnetic Research Group, University of Bradford",74.4,32.4,1.2,see notes,see notes,Clark et al. (1988),FALSE,TRUE,A calibrated age range of 540-480BC. The date was younger than expected and did not agree with the other dating evidence or the archaeological evidence. It is possible that the feature may pre-date 1000BC.,"C.M. Batt (2000) Archaeomagnetic dating of three hearths from excavations at Cladh Hallan, South Uist. Archaeomagnetic Research Group, University of Bradford. Unpublished report"
Cladh Hallan,Outer Hebrides/Na h-Eileana Siar,NF,732,219,"Department of Archaeology, University of Sheffield",Bronze Age/Iron Age,Hearth,Fired clay and sand hearth,CH1(2000)/AM124,"Archaeomagnetic Research Group, University of Bradford",65.9,23.9,6.0,see notes,see notes,Clark et al. (1988),FALSE,TRUE,"A date of AD970-1190 was produced, which did not agree with the radiocarbon or archaeological evidence. It is likely that the feature may pre-date 1000BC, the current limits of the British calibration curve","C.M. Batt & Z. Outram (2001) Archaeomagnetic dating of hearths from the excavations at Cladh Hallan, South Uist. Archaeomagnetic Research Group, University of Bradford. Unpublished report"
Cladh Hallan,Outer Hebrides/Na h-Eileana Siar,NF,732,219,"Department of Archaeology, University of Sheffield",Bronze Age/Iron Age,Hearth,Soft red fired clay,CH2(2000)/AM125,"Archaeomagnetic Research Group, University of Bradford",70.0,19.7,3.4,see notes,see notes,Clark et al. (1988),FALSE,TRUE,"Four possible age ranges were produced: 450-410BC, AD500-505, AD1000-1100, or AD1510-1590. None of the age ranges agreed with the radiocarbon or archaeological evidence, and it is possible that the feature pre-dates 1000BC","C.M. Batt & Z. Outram (2001) Archaeomagnetic dating of hearths from the excavations at Cladh Hallan, South Uist. Archaeomagnetic Research Group, University of Bradford. Unpublished report"
Cladh Hallan,Outer Hebrides/Na h-Eileana Siar,NF,732,219,"Department of Archaeology, University of Sheffield",Bronze Age/Iron Age,Hearth,Central hearth within the structure,CH4(2000),"Archaeomagnetic Research Group, University of Bradford",70.6,17.8,4.8,see notes,see notes,Clark et al. (1988),FALSE,TRUE,"Four age ranges were produced: 500-320BC, AD490-600, AD830-1000, AD1510-1590. None of these age ranges were supported by the radiocarbon or the archaeological evidence. It is possible that the feature pre-dates 1000BC","C.M. Batt & Z. Outram (2001) Archaeomagnetic dating of hearths from the excavations at Cladh Hallan, South Uist. Archaeomagnetic Research Group, University of Bradford. Unpublished report"
Cladh Hallan,Outer Hebrides/Na h-Eileana Siar,NF,732,219,"Department of Archaeology, University of Sheffield",Bronze Age/Iron Age,Hearth,Brown ash and orange sand from the hearth,CHC/AM128,"Archaeomagnetic Research Group, University of Bradford",71.0,2.3,3.5,see notes,see notes,Clark et al. (1988),FALSE,TRUE,"Five age ranges were produced: 380-90BC, AD1-70, AD575-600, AD760-850AD, AD1580-1670. None of the ranges are supported by the radiocarbon or archaeological evidence. It is possible that the feature pre-dates 1000BC","C.M. Batt & Z. Outram (2001) Archaeomagnetic dating of hearths from the excavations at Cladh Hallan, South Uist. Archaeomagnetic Research Group, University of Bradford. Unpublished report"
Cladh Hallan,Outer Hebrides/Na h-Eileana Siar,NF,732,219,"Department of Archaeology, University of Sheffield",Bronze Age/Iron Age,Hearth,Fired clay from hearth,CHD/AM129,"Archaeomagnetic Research Group, University of Bradford",74.7,7.04,4.35,see notes,see notes,Clark et al. (1988),FALSE,TRUE,"Three age ranges: 405-90BC, AD500-560, AD850-940, AD1520-1570. None of the age ranges were supported by the radiocarbon or archaeological evidence from the structure. It is possible that the feature pre-dates 1000BC. Mean based on less than 8 specimens","C.M. Batt & Z. Outram (2001) Archaeomagnetic dating of hearths from the excavations at Cladh Hallan, South Uist. Archaeomagnetic Research Group, University of Bradford. Unpublished report"
Cladh Hallan,Outer Hebrides/Na h-Eileana Siar,NF,732,219,"Department of Archaeology, University of Sheffield",Bronze Age/Iron Age,Hearth,hearth recorded in a small test pit from House 801,AM162,"Archaeomagnetic Research Group, University of Bradford",74.7,23.3,2.6,see notes,see notes,Clark et al. (1988),FALSE,TRUE,"The magnetic vector did not overlap with the calibration curve, but it is possible that the feature pre-dates 1000BC, which is the current limit of the British calibration curve.","C.M. Batt (2000) Archaeomagnetic dating of three hearths from excavations at Cladh Hallan, South Uist. Archaeomagnetic Research Group, University of Bradford. Unpublished report"
Corby Prior Hall,Northamptonshire,SP,929,901,Archaeological Project Services,Roman Britain,Furnace,"Bowl-shaped furnace wall, Hard, mid-purple-pink  burnt clay",CPHF1B (AM98),"Archaeomagnetic Research Group, University of Bradford",57.4,356.3,4.2,240,300,Rendate v.1.0.0.4b,FALSE,TRUE,Two possible age ranges were produced: AD240-300 or AD1227-1503. The Medieval date was discounted based on the archaeological evidence,"D.P. Greenwood & C.M. Batt (2007) Archaeomagnetic dating of six iron smelting features excavated at Corby Prior's Hall, Northamptonshire. Archaeomagnetic Research Group, University of Bradford, unpublished report"
Corby Prior Hall,Northamptonshire,SP,929,901,Archaeological Project Services,Roman Britain,Furnace,"Sunken shaft furnace wall lining was sampled. Compact, light yellow fired clay with pink-red mottles",CPHF2 (AM99),"Archaeomagnetic Research Group, University of Bradford",67.4,358.2,2.3,see notes,see notes,Rendate v.1.0.0.4b,FALSE,TRUE,"Three possible age ranges were produced: 535BC-AD120, AD415-660, AD1590-1700. The Post-Medieval range was discounted on the basis of the archaeological evidence","D.P. Greenwood & C.M. Batt (2007) Archaeomagnetic dating of six iron smelting features excavated at Corby Prior's Hall, Northamptonshire. Archaeomagnetic Research Group, University of Bradford, unpublished report"
Corby Prior Hall,Northamptonshire,SP,929,901,Archaeological Project Services,Roman Britain,Furnace,Sunken shaft furnace wall: hard grey-white heated clay furnace lining,CPHF3A (AM100),"Archaeomagnetic Research Group, University of Bradford",65.4,355.3,1.9,see notes,see notes,Rendate v.1.0.0.4b,FALSE,TRUE,Two possible age ranges were produced: 395BC-AD230 or AD340-600. Additional information would be required to determine the archaeological significant age range.,"D.P. Greenwood & C.M. Batt (2007) Archaeomagnetic dating of six iron smelting features excavated at Corby Prior's Hall, Northamptonshire. Archaeomagnetic Research Group, University of Bradford, unpublished report"
Corby Prior Hall,Northamptonshire,SP,929,901,Archaeological Project Services,Roman Britain,Furnace,Sunken shaft furnace lining was sampled: hard white fired clay,CPHF4A (AM101),"Archaeomagnetic Research Group, University of Bradford",64.1,2.8,3.6,-110,665,Rendate v.1.0.0.4b,FALSE,TRUE,"Several age ranges were produced: 480-225BC, 110BC-AD665, AD1115-1230, AD1421-1655. The Medieval and Iron Age period age ranges were discounted based on the archaeological evidence.","D.P. Greenwood & C.M. Batt (2007) Archaeomagnetic dating of six iron smelting features excavated at Corby Prior's Hall, Northamptonshire. Archaeomagnetic Research Group, University of Bradford, unpublished report"
Corby Prior Hall,Northamptonshire,SP,929,901,Archaeological Project Services,Roman Britain,Furnace,"Sunken shaft furnace bottom. A thick reddened clay layer was sampled. The material was 8cm thick, with the top 2-3cm being red.",CPHF4B (AM102),"Archaeomagnetic Research Group, University of Bradford",66.7,11.3,5.1,see notes,see notes,Rendate v.1.0.0.4b,FALSE,TRUE,"Several age ranges were produced: 1000-275BC, AD1-125, AD390-1190, AD1495-1710. The Medieval and Bronze Age/Iron date were discounted based on the archaeological evidence, leaving the ranges AD1-125 or AD390-1190","D.P. Greenwood & C.M. Batt (2007) Archaeomagnetic dating of six iron smelting features excavated at Corby Prior's Hall, Northamptonshire. Archaeomagnetic Research Group, University of Bradford, unpublished report"
Corby Prior Hall,Northamptonshire,SP,929,901,Archaeological Project Services,Roman Britain,Furnace,"D-shaped furnace wall outer lining was sampled, composed of white, extremely hard fired clay.",CPHF5A (AM103),"Archaeomagnetic Research Group, University of Bradford",71.2,355.1,3.3,see notes,see notes,Rendate v.1.0.0.4b,FALSE,TRUE,"Three possible age ranges were produced: 560-95BC, AD560-710, AD1645-present. The expected date of the feature was Roman, but none of the age ranges date to this period","D.P. Greenwood & C.M. Batt (2007) Archaeomagnetic dating of six iron smelting features excavated at Corby Prior's Hall, Northamptonshire. Archaeomagnetic Research Group, University of Bradford, unpublished report"