Cockcroft, T. and Gater, J. A. (2022). Geophysical Survey at Land at Ambrosden, Cherwell, Oxfordshire. Sumo Geophysics. https://doi.org/10.5284/1110297. Cite this using datacite

Title
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Title:		 Geophysical Survey at Land at Ambrosden, Cherwell, Oxfordshire
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Series:		 SUMO Geophysics Limited unpublished reports
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sumogeop1-505971_188428.pdf (5 MB) : Download
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Creative Commons Attribution 4.0
International Licence
DOI
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DOI
https://doi.org/10.5284/1110297
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Publication Type:		 Report (in Series)
Abstract
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Abstract:		 A temporary grid system was established over the site and marked out using canes. The location of the grid will be set out using an RTK GPS system theoretically accurate to some 0.01m and referenced to OS co-ordinates. Hand Held: Data will be collected using a Bartington Grad 601-2. The instrument consists of two paired sensors (see below) and readings are logged at 0.25m centres along traverses 1.0m apart across 30m grids. The collection of data at 0.25m centres provides an appropriate methodology balancing cost and time with resolution as per Historic England guidelines. Two sensors mounted 1m horizontally apart and very accurately aligned to nullify the effects of the earth's magnetic field. Readings relate to the difference in localised magnetic anomalies compared with the general magnetic background. A magnetometer survey of approximately 6 hectares of ground west of Ambrosden has located a range of anomalies which are of archaeological interest. The main area of importance is thought to reflect formal gardens associated with Ambrosden Hall; other less probable interpretations are the site of Ambrosden Manor House is reflected in the anomalies or they indicate a small Romano-British double-ditched enclosure. Assuming that gardens have been identified, further elements of the formal landscape could be present in the data, along with a former track / field division. A large curvilinear anomaly plus other linears, curving trends and pit-like responses of uncertain origin. Ridge and furrow ploughing has also been recorded.
Author
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Author:		 Thomas Cockcroft
John A Gater
Publisher
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Publisher:		 Sumo Geophysics
Year of Publication
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Year of Publication:		 2022
Locations
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Locations:
Country: England
County: Oxfordshire
District: Cherwell
Parish: Ambrosden
Grid Reference: 459887, 219394 (Easting, Northing)
Subjects / Periods
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Subjects / Periods:
DITCH (Monument Type England)
PIT (Monument Type England)
MEDIEVAL RIDGE AND FURROW (Tag)
UNCERTAIN DITCH (Tag)
MAGNETOMETRY SURVEY (Event)
GARDENS PARKS AND URBAN SPACES (Monument Type England)
GEOPHYSICAL SURVEY (Event)
RIDGE AND FURROW (Monument Type England)
POST MEDIEVAL GARDENS PARKS AND URBAN SPACES (Tag)
UNCERTAIN PIT (Tag)
MEDIEVAL (Historic England Periods)
POST MEDIEVAL (Historic England Periods)
UNCERTAIN (Historic England Periods)
Identifiers
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OASIS Id: sumogeop1-505971
Report id: 07119
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OASIS (OASIS)
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Created Date
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Created Date:		 12 Jul 2023