Dating the megalithic culture of laos: Radiocarbon, optically stimulated luminescence and U/Pb zircon results

Date

2021-03-10

Authors

Shewan, Louise
O'Reilly, Dougald
Armstrong, Richard
Toms, Phillip
Webb, John
Beavan, Nancy
Luangkhoth, Thonglith
Wood, Jamie
Halcrow, Siân
Domett, Kate

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Publisher

Public Library of Science

Abstract

The megalithic jar sites of Laos (often referred to as the Plain of Jars) remain one of Southeast Asia’s most mysterious and least understood archaeological cultures. The sites, recently inscribed as UNESCO World Heritage, host hollowed stone jars, up to three metres in height, which appear scattered across the landscape, alone or clustered in groups of up to more than 400. Until now, it has not been possible to estimate when the jars were first placed on the landscape or from where the stone was sourced. Geochronological analysis using the age of detrital zircons demonstrates a likely quarry source for one of the largest megalithic jar sites. Optically Stimulated Luminescence (OSL) dating suggests the jars were positioned at the sites potentially as early as the late second millennium BC. Radiocarbon dating of skeletal remains and charcoal samples places mortuary activity around the jars from the 9-13th century AD, suggesting the sites have maintained ritual significance from the period of their initial placement until historic times.

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Source

PLOS ONE

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Journal article

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Open Access

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Creative Commons Attribution License

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