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Luminescence-dated aeolian deposits of late Quaternary age in the southern Tibetan Plateau and their implications for landscape history
Lai, ZhongPing1,3; Kaiser, Knut2,3; Bruckner, Helmut3
2009-11-01
发表期刊QUATERNARY RESEARCH
卷号72期号:3页码:421-430
文章类型Article
摘要Aeolian deposits are widely distributed in the interior of the Tibetan Plateau. and their chronology is poorly known. It is not yet clear whether they accumulated only after the last deglaciation, or over a longer time We applied quartz OR dating to aeolian samples from the Lhasa area with OSI, ages ranging from 2 9 0 2 to at least 118 +/- 11 ka. The probability density frequency (PDF) distribution of 24 ages reveals age clusters at about 3, 8, 16-21, 33. and 79-83 ka. indicating enhanced sediment accumulation then. The results show that aeolian deposition Occurred throughout most of the last 100 ka This implies that 1) an ice sheet covering the whole Tibetan Plateau during the last glacial maximum (LGM) could not have existed: and 2) erosion during the last deglaciation was not as strong as previously proposed. Such that not all pre-Holocene loess was removed The age distribution shown in the PDF indicates that aeolian accumulation is episodic Sand-formation events revealed by age clusters at 3, 8, and 16-21 ka imply roughly synchronous environmental responses to corresponding global-scale and events. (C) 2009 University of Washington Published by Elsevier Inc All rights reserved.
关键词Aeolian Deposits Quartz Luminescence Dating Palaeoenvironmental Change Tibetan Plateau
WOS标题词Science & Technology ; Physical Sciences
关键词[WOS]HOLOCENE ENVIRONMENTAL-CHANGES ; LOESS-PALEOSOL SEQUENCES ; BASIN WESTERN TIBET ; EAST-ASIAN MONSOON ; CHINESE LOESS ; NORTH-ATLANTIC ; QINGHAI LAKE ; ICE CORE ; PALEOENVIRONMENTAL IMPLICATIONS ; CLIMATE-CHANGE
收录类别SCI
语种英语
WOS研究方向Physical Geography ; Geology
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号WOS:000271254000013
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文献类型期刊论文
条目标识符http://ir.isl.ac.cn/handle/363002/5886
专题青海盐湖研究所知识仓储
盐湖地质与环境实验室
作者单位1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Salt Lake Resources & Chem, Luminescence Dating Grp, Xining 810008, Peoples R China
2.German Acad Sci & Engn, D-14473 Potsdam, Germany
3.Univ Marburg, Fac Geog, D-35032 Marburg, Germany
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Lai, ZhongPing,Kaiser, Knut,Bruckner, Helmut. Luminescence-dated aeolian deposits of late Quaternary age in the southern Tibetan Plateau and their implications for landscape history[J]. QUATERNARY RESEARCH,2009,72(3):421-430.
APA Lai, ZhongPing,Kaiser, Knut,&Bruckner, Helmut.(2009).Luminescence-dated aeolian deposits of late Quaternary age in the southern Tibetan Plateau and their implications for landscape history.QUATERNARY RESEARCH,72(3),421-430.
MLA Lai, ZhongPing,et al."Luminescence-dated aeolian deposits of late Quaternary age in the southern Tibetan Plateau and their implications for landscape history".QUATERNARY RESEARCH 72.3(2009):421-430.
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