IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2010~)
Underestimated 14C-based chronology of late Pleistocene highlake-level events over the Tibetan Plateau and adjacent areas:Evidence from the Qaidam Basin and Tengger Desert
Hao,L(Hao,Long)[1,2]; Ji,S(Ji,Shen)[1]
2015-02
Source PublicationScience China Earth Science
Volume58Issue:2Pages:183-194
Subtype期刊论文
AbstractThe palaeolake evolution across the Tibetan Plateau and adjacent areas has been extensively studied, but the timing of late Pleistocene lake highstands remains controversial. Robust dating of lacustrine deposits is of importance in resolving this issue. This paper presents C-14 or optically stimulated luminescence (OSL) age estimates from two sets of late Quaternary lacustrine sequences in the Qaidam Basin and Tengger Desert (northeastern Tibetan Plateau). The updated dating results show: (1) the radiocarbon dating technique apparently underestimated the age of the strata of >30 ka BP in Qaidam Basin; (2) although OSL and C-14 dating agreed with each other for Holocene age samples in the Tengger Desert area, there was a significant offset in dating results of sediments older than similar to 30 ka BP, largely resulting from radiocarbon dating underestimation; (3) both cases imply that most of the published radiocarbon ages (e.g., older than similar to 30 ka BP) should be treated with caution and perhaps its geological implication should be revaluated; and (4) the high lake events on the Tibetan Plateau and adjacent areas, traditionally assigned to MIS 3a based on C-14 dating, are likely older than similar to 80 ka based on OSL chronology.
KeywordTibetan Plateau lake highstand lacustrine sediments 14C dating OSL dating
DOI10.1007/s11430-014-4993-2
Indexed BySCI
Language英语
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Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/9635
Collection黄土与第四纪地质国家重点实验室(2010~)
Affiliation1.State Key Laboratory of Lake Sciences and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China;
2.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi’an 710075, China
Recommended Citation
GB/T 7714
Hao,L,Ji,S. Underestimated 14C-based chronology of late Pleistocene highlake-level events over the Tibetan Plateau and adjacent areas:Evidence from the Qaidam Basin and Tengger Desert[J]. Science China Earth Science,2015,58(2):183-194.
APA Hao,L,&Ji,S.(2015).Underestimated 14C-based chronology of late Pleistocene highlake-level events over the Tibetan Plateau and adjacent areas:Evidence from the Qaidam Basin and Tengger Desert.Science China Earth Science,58(2),183-194.
MLA Hao,L,et al."Underestimated 14C-based chronology of late Pleistocene highlake-level events over the Tibetan Plateau and adjacent areas:Evidence from the Qaidam Basin and Tengger Desert".Science China Earth Science 58.2(2015):183-194.
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