Luminescence chronology of aeolian deposits from the Qinghai Lake area in the Northeastern Qinghai-Tibetan Plateau and its palaeoenvironmental implications

ISL OpenIR > 青海盐湖研究所知识仓储

	Luminescence chronology of aeolian deposits from the Qinghai Lake area in the Northeastern Qinghai-Tibetan Plateau and its palaeoenvironmental implications
	Liu, XiangJun 1,2; Lai, ZhongPing1,2 ; Yu, LuPeng 1,4; Sun, YongJuan 1,2; Madsen, David 3
	2012-07-01
发表期刊	QUATERNARY GEOCHRONOLOGY
卷号	10 页码:37-43
关键词	Qinghai Lake Qinghai-tibetan Plateau Aeolian Deposits Optically Stimulated Luminescence (Osl) Dating Palaeoenvironmental Change
摘要	Qinghai Lake, on the northeastern Qinghai-Tibetan Plateau, is the largest extant closed-basin lake in China, and has been the subject of numerous palaeoclimatological and palaeoenvironmental studies. In this study, 32 samples of aeolian sand, loess and palaeosol at six sites, and 1 sample of shoreline deposits underlying aeolian deposits were dated using optically stimulated luminescence (OSL). Where available, OSL ages are in agreement with previously published C-14 ages. Our dating results, in combination with previous published ages on aeolian deposits showed that: (1) The oldest aeolian deposits around Qinghai Lake are in excess of 165 ka. (2) Aeolian deposition then began at 14 ka in the Qinghai Lake area. Periods of palaeosol formation occurred at similar to 16.9 ka, similar to 12.2-11 ka, similar to 10-9 ka, similar to 5.2-4 ka, and similar to 3.9-0.7 ka. (3) The accumulation intervals of palaeosols are generally consistent with drilling-core-based environmental change proxies, indicating that palaeosols were formed during wet periods with higher vegetation cover. (4) A depositional hiatus period of similar to 40-50 ka exists between the surface mantle aeolian deposits and underlying gravel deposits. (5) Lake levels during the Holocene did not exceed 3205.2 m elevation (11.8 m above recent lake level of April, 2010). (C) 2012 Elsevier B.V. All rights reserved.
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/5651
专题	青海盐湖研究所知识仓储中国科学院青海盐湖研究所
作者单位	1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Luminescence Dating Grp, Xining 810008, Peoples R China 2.Chinese Acad Sci, State Key Lab Cryospher Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 3.Univ Texas Austin, Texas Archeol Res Lab, Austin, TX 78712 USA 4.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Liu, XiangJun,Lai, ZhongPing,Yu, LuPeng,et al. Luminescence chronology of aeolian deposits from the Qinghai Lake area in the Northeastern Qinghai-Tibetan Plateau and its palaeoenvironmental implications[J]. QUATERNARY GEOCHRONOLOGY,2012,10:37-43.
APA	Liu, XiangJun,Lai, ZhongPing,Yu, LuPeng,Sun, YongJuan,&Madsen, David.(2012).Luminescence chronology of aeolian deposits from the Qinghai Lake area in the Northeastern Qinghai-Tibetan Plateau and its palaeoenvironmental implications.QUATERNARY GEOCHRONOLOGY,10,37-43.
MLA	Liu, XiangJun,et al."Luminescence chronology of aeolian deposits from the Qinghai Lake area in the Northeastern Qinghai-Tibetan Plateau and its palaeoenvironmental implications".QUATERNARY GEOCHRONOLOGY 10(2012):37-43.