pIRIR and IR-RF dating of archaeological deposits at Badahlin and Gu Myaung Caves - First luminescence ages for Myanmar

被引：8

作者：

Schaarschmidt, Maria ^{[1
]}

Fu, Xiao ^{[1
]}

Li, Bo ^{[1
,2
]}

Marwick, Ben ^{[1
,3
]}

Khaing, Kyaw ^{[4
]}

Douka, Katerina ^{[5
]}

Roberts, Richard G. ^{[1
,2
]}

机构：

[1] Univ Wollongong, Sch Earth & Environm Sci, Ctr Archaeol Sci, Wollongong, NSW 2522, Australia

[2] Univ Wollongong, ARC Ctr Excellence Australian Biodivers & Heritag, Wollongong, NSW 2522, Australia

[3] Univ Washington, Dept Anthropol, Seattle, WA 98195 USA

[4] Minist Religious Affairs & Culture, Field Sch Archaeol, Dept Archaeol & Natl Museum, Pyay, Myanmar

[5] Univ Oxford, Res Lab Archaeol & Hist Art, Oxford OX1 3QY, England

来源：

QUATERNARY GEOCHRONOLOGY | 2019年 / 49卷

基金：

澳大利亚研究理事会; 欧洲研究理事会;

关键词：

K-feldspar; Single grain; Post-IR IRSL; Radiofluorescence; Partial bleaching; Residual dose; Southeast Asia; K-FELDSPAR; SEDIMENTS; SINGLE; RADIOLUMINESCENCE; QUARTZ; PROTOCOL; GRAINS; ALIQUOT; CONTEXT; TOOL;

D O I：

10.1016/j.quageo.2018.01.001

中图分类号：

P9 [自然地理学];

学科分类号：

0705 ; 070501 ;

摘要：

Reliable chronologies are essential for understanding the timing and routes of human dispersal through Southeast Asia, both of which remain open questions. This study provides luminescence chronologies for two archaeological sites in Myanmar Badahlin Cave and Gu Myaung Cave from which Palaeolithic artefacts have been recovered. We applied single-grain post-infrared infrared stimulated luminescence (pIRIR) and multi-grain infrared-radiofluorescence (IR-RF) dating methods to potassium-rich feldspar (K-feldspar) grains extracted from the sedimentary deposits at these two sites. Luminescence characteristics of the K-feldspar extracts showed that the procedures were well suited for dating. The single-grain pIRIR ages suggest human occupation of Badahlin and Gu Myaung Caves by 30 ka and 25 ka, respectively, although the age estimates for Gu Myaung Cave are much older than the radiocarbon ages. The ages obtained using the IR-RF signal are even older, which we attribute to insufficient bleaching of this signal and perhaps also the pIRIR signal and the probable existence of a substantial residual dose at the time of sediment deposition.

引用

页码：262 / 270

页数：9