OSL and radiocarbon dating of a pre-Angkorian canal in the Mekong delta, southern Cambodia

Bishop, P., Sanderson, D.C.W. and Stark, M.T. (2004) OSL and radiocarbon dating of a pre-Angkorian canal in the Mekong delta, southern Cambodia. Journal of Archaeological Science, 31(3), 319 -336. (doi:10.1016/j.jas.2003.09.002)

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Publisher's URL: http://dx.doi.org/10.1016/j.jas.2003.09.002

Abstract

This study presents preliminary results of research on pre-Angkorian canals near the ancient settlement of Angkor Borei in the southern Mekong delta of southern Cambodia. The canals have been mapped by aerial photograph interpretation and investigated in the field by hand auger drilling of two canal traces and trenching of one of these. Luminescence profiling through the canal infill successfully identified the base of the canal as well as revealing distrubance and mixing of the canal infill that was not apparent from visual inspection or sedimentological analyses of the infill sediments. OSL dating of the canal bed indicates excavation (or re-excavation) of the canal bed between the first millennium BC and the middle of the first millenium AD. This date is consistent with the time of initial occupation of Angkor borei in the fourth century BC. Multiple charcoal samples with a pooled age of early fourth to early fifth century AD probably signal the onset of canal infilling. The apparent demise of the canal coincides with a major change in land-use signalled in pollen and diatom data from Angkor Borei, but this change cannot be taken to indicate de-population of the region. This tentative chronology will be refined when more canals are investigated and greater precision is achieved in OSL dating of the canals. The latter will necessitate clearer identification and separation of unbleached (older, pre-archaeological) components and bleached (younger and dating the canal digging and/or operation) components in the OSL stored dose.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Sanderson, Professor David and Bishop, Professor Paul
Authors: Bishop, P., Sanderson, D.C.W., and Stark, M.T.
Subjects:C Auxiliary Sciences of History > CC Archaeology
D History General and Old World > DS Asia
College/School:College of Science and Engineering > School of Geographical and Earth Sciences
College of Science and Engineering > Scottish Universities Environmental Research Centre
Journal Name:Journal of Archaeological Science
Publisher:Elsevier
ISSN:0305-4403
ISSN (Online):1095-9238
First Published:First published in Journal of Archaeological Science31 (3) : 319-336

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