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Optically stimulated luminescence dating of sand-dune formed within the Little Ice Age
Du, JH (Du, Jin-Hua)[ 1,2 ]; Wang, XL (Wang, Xu-Long)[ 1 ]
2014-09-01
Source PublicationJOURNAL OF ASIAN EARTH SCIENCES
Volume91Issue:SIPages:154-162
Subtype期刊论文
Abstract

Optically Stimulated Luminescence (OSL) dating has been intensively used to date the late Quaternary deposits. The Single-Aliquot Regenerative-dose (SAR) protocol was applied to measure coarse quartz grains extracted from Dali sand dunes, central China. It was found that this popular method could not accurately date sand dunes activities that recently happened. This is due to the low OSL sensitivity of quartz grains, leading to a failure in OSL dating that has also been met in other sediments before. To overcome this limitation, quartz grains were heated to 500 degrees C to increase the OSL output for one magnitude. Sensitivity changes could also be corrected by the following test dose OSL responses and has no influence on OSL ages. Thus it is suggested to carry out the SAR protocol for dim and young quartz OSL samples with additional annealing step (e.g. 500 degrees C) after the measurements of natural cycle. The resultant OSL ages proved that the last sand-dune activities happened during the Little Ice Age (similar to 400 years ago), which was further supported by independent age control (similar to 1600 AD) from historical documents.

KeywordSand Dunes Osl Dating Sar Dim And Young Quartz Little Ice Age
DOI10.1016/j.jseaes.2014.05.012
Indexed BySCI ; EI
Language英语
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Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/9702
Collection现代环境研究室
Corresponding AuthorWang, XL (Wang, Xu-Long)[ 1 ]
Affiliation1.SKLLQG, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075, China;
2.University of Chinese Academy of Sciences, Beijing 100049, China
Recommended Citation
GB/T 7714
Du, JH ,Wang, XL . Optically stimulated luminescence dating of sand-dune formed within the Little Ice Age[J]. JOURNAL OF ASIAN EARTH SCIENCES,2014,91(SI):154-162.
APA Du, JH ,&Wang, XL .(2014).Optically stimulated luminescence dating of sand-dune formed within the Little Ice Age.JOURNAL OF ASIAN EARTH SCIENCES,91(SI),154-162.
MLA Du, JH ,et al."Optically stimulated luminescence dating of sand-dune formed within the Little Ice Age".JOURNAL OF ASIAN EARTH SCIENCES 91.SI(2014):154-162.
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