Radiocarbon dating of a young speleothem record of paleoclimate for Angkor, Cambodia

Conference paper


Hua, Quan, Cook, Duncan, Fohlmeister, Jens, Penny, Dan, Bishop, Paul and Buckman, Soloman. (2017). Radiocarbon dating of a young speleothem record of paleoclimate for Angkor, Cambodia. 8th Radiocarbon and Archaeology Symposium. Edinburgh, United Kingdom 27 Jun - 01 Jul 2016 Cambridge University Press. pp. 1873-1890 https://doi.org/10.1017/RDC.2017.115
AuthorsHua, Quan, Cook, Duncan, Fohlmeister, Jens, Penny, Dan, Bishop, Paul and Buckman, Soloman
TypeConference paper
Abstract

We report the chronological construction for the top portion of a speleothem, PC1, from southern Cambodia with the aim of reconstructing a continuous high-resolution climate record covering the fluorescence and decline of the medieval Khmer kingdom and its capital at Angkor (~9th–15th centuries AD). Earlier attempts to date PC1 by the standard U-Th method proved unsuccessful. We have therefore dated this speleothem using radiocarbon. Fifty carbonate samples along the growth axis of PC1 were collected for accelerator mass spectrometry (AMS) analysis. Chronological reconstruction for PC1 was achieved using two different approaches described by Hua et al. (2012a) and Lechleitner et al. (2016a). Excellent concordance between the two age-depth models indicates that the top ~47 mm of PC1 grew during the last millennium with a growth hiatus during ~1250–1650 AD, resulting from a large change in measured 14C values at 34.4–35.2 mm depth. The timing of the growth hiatus covers the period of decades-long droughts during the 14th–16th centuries AD indicated in regional climate records.

KeywordsAngkor; chronological construction; radiocarbon; Southeast Asia; tropical speleothems
Year2017
JournalRadiocarbon
PublisherCambridge University Press
ISSN0033-8222
1945-5755
Digital Object Identifier (DOI)https://doi.org/10.1017/RDC.2017.115
Scopus EID2-s2.0-85040012556
Research or scholarlyResearch
Publisher's version
License
All rights reserved
File Access Level
Controlled
Journal citation59 (6), pp. 1873-1890
Page range1873-1890
Output statusPublished
Publication dates
Online14 Dec 2017
Publication process dates
Deposited19 Apr 2022
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