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Lake level variations of Qinghai Lake in northeastern Qinghai-Tibetan Plateau since 3.7 ka based on OSL dating
Liu, XiangJun1,2; Lai, ZhongPing1; Madsen, David3; Yu, LuPeng1,2; Liu, Kai1,2; Zhang, JingRan1,2
2011-05-01
Source PublicationQUATERNARY INTERNATIONAL
Volume236Pages:57-64
SubtypeArticle
AbstractQinghai Lake is the largest internally drained lake in China and its unique location makes it sensitive to climate changes. Late glacial climate changes associated with variation in Qinghai Lake levels have been intensively investigated for the past 40 years, with particular attention paid to lake level fluctuation histories between the last interglacial and the Holocene. However, the details of lake level fluctuations during the Holocene are still unclear. Using both optically stimulated luminescence (OSL) dating of quartz (for 22 samples) and infra-red stimulated luminescence (IRSL) of feldspars (only for sample HYW1 whose IRSL age is 37 +/- 15 years), a total of 23 samples are dated from paleoshoreline deposits, fluvial sediments and aeolian sands (a total of 13 sections) near the modern lake shore, with ages from 37 +/- 15 to 3710 +/- 350 years. These ages are used to reconstruct the lake level fluctuation history spanning the last 3700 years. The results indicate that: (1) the youngest IRSL age of 37 +/- 15 years is in agreement with the independent age of 39-29 years, suggesting that luminescence dating is able to date decadal samples for sediments from the study area; (2) the lake experienced several oscillations imposed on an overall regressive trend during the past 3700 years; (3) the dated paleoshoreline deposits are generally related to warm and wet periods, suggesting that those shoreline deposits formed during cold and dry periods, if any, may have been modified by later transgressions; (4) lake level fluctuations during the period of 3700-240 years ago are generally consistent with the climate conditions identified in other proxies, with the highest lake level occurring about 1770 years ago; and (5) after 240 years ago the lake level dropped more rapidly, which is inconsistent with the proxy records (showing a warmer and wetter phase). (C) 2010 Elsevier Ltd and INQUA. All rights reserved.
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordLAST 18,000 YEARS ; OXYGEN-ISOTOPE ; CHINESE LOESS ; SEDIMENTS ; LUMINESCENCE ; RECORDS ; RATES
Indexed BySCI ; ISTP
Language英语
WOS Research AreaPhysical Geography ; Geology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary
WOS IDWOS:000290511100007
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Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/5982
Collection青海盐湖研究所知识仓储
盐湖地质与环境实验室
Affiliation1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Salt Lake Resources & Chem, Luminescence Dating Grp, Xining 810008, Qinghai, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
3.Univ Texas Austin, Texas Archeol Res Lab, Austin, TX 78712 USA
Recommended Citation
GB/T 7714
Liu, XiangJun,Lai, ZhongPing,Madsen, David,et al. Lake level variations of Qinghai Lake in northeastern Qinghai-Tibetan Plateau since 3.7 ka based on OSL dating[J]. QUATERNARY INTERNATIONAL,2011,236:57-64.
APA Liu, XiangJun,Lai, ZhongPing,Madsen, David,Yu, LuPeng,Liu, Kai,&Zhang, JingRan.(2011).Lake level variations of Qinghai Lake in northeastern Qinghai-Tibetan Plateau since 3.7 ka based on OSL dating.QUATERNARY INTERNATIONAL,236,57-64.
MLA Liu, XiangJun,et al."Lake level variations of Qinghai Lake in northeastern Qinghai-Tibetan Plateau since 3.7 ka based on OSL dating".QUATERNARY INTERNATIONAL 236(2011):57-64.
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