Toms, P. (2005). Luminescence Dating for the Bletchingley Excavations, Surrey. London: English Heritage. https://doi.org/10.5284/1091443. Cite this using datacite

Title
Title
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Title:		 Luminescence Dating for the Bletchingley Excavations, Surrey
Series
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Series:		 Historic England Research Reports
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Downloads:
englishh2-107064_1.pdf (1 MB) : Download
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ADS, CC-BY 4.0 or CC-BY 4.0 NC.
Licence Type:
Creative Commons Attribution 4.0 International Licence icon
Creative Commons Attribution 4.0
International Licence
DOI
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DOI
https://doi.org/10.5284/1091443
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Publication Type:		 Report (in Series)
Abstract
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Abstract:		 Three conventional sediment samples and six burnt flints obtained from section A11 of the Bletchingley excavations were submitted for optical and thermoluminescence dating, respectively, by English Heritage. An attempt to quantify the accuracy of all luminescence age estimates was made using signal analysis methods to detect partial resetting of datable signals prior to sample interment, and through consideration of the influence of varying moisture content and cosmic dose rate over the burial period. Optical dating evolved a chronology of sedimentation, not necessarily continuous, from c 32ka (30,000 BC) through to c 2.8 ka (800 BC). Three flints were excluded from the study owing to evidence of insufficient heating prior to burial. The remaining flints, located in close proximity to each optical dating sample, generated age estimates of c 7 to 12 ka (5000 to 10,000 BC) consistent with age expectations premised upon microliths recovered from equivalent levels across the site. However, a significant inversion in age between the lowermost optical dating sample and the underlying flint sample was recorded. After considering the accuracy of De and dose rate estimates for both sample types, this anomaly was attributed to displacement of the flint samples from its primary context by anthropogenic activity or gravitational effects coupled with low adhesion afforded by the sand matrix within which all the flint samples were located. Similar displacement, for all the flint samples that have yielded age estimate in this study, cannot be dismissed. The juxtaposition of Mesolithic burnt flints and Iron Age sediments and charcoal in the uppermost dated unit evidences a period of land surface stability and repeated human occupation of this area.
Author
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Author:		 P. S. Toms
Publisher
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Publisher:		 English Heritage
Year of Publication
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Year of Publication:		 2005
Locations
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Locations:
Parish: Bletchingley
Country: England
County: Surrey
District: Tandridge
Grid Reference: 532898, 151999 (Easting, Northing)
Subjects / Periods
Subjects / Periods
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Subjects / Periods:
MICROLITH (Object England)
MESOLITHIC MICROLITH (Tag)
OCCUPATION SITE (Monument Type England)
IRON AGE OCCUPATION SITE (Tag)
FLINT SCATTER (Monument Type England)
MESOLITHIC FLINT SCATTER (Tag)
EXCAVATION (Event)
IRON AGE (Historic England Periods)
MESOLITHIC (Historic England Periods)
Identifiers
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Identifiers:
OASIS Id: englishh2-107064
OBIB: 9/2005
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Note:		 This report was uploaded to the OASIS system by the named Publisher. The report has been transferred into the ADS Library for public access and to facilitate future research.
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OASIS (OASIS)
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Created Date
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Created Date:		 19 Apr 2022