Distinguishing aeolian signature from lacustrine sediments of the Qaidam Basin in northeastern Qinghai-Tibetan Plateau and its palaeoclimatic implications

CORC > 青海盐湖研究所 > 中国科学院青海盐湖研究所 > 青海盐湖研究所知识仓储

	Distinguishing aeolian signature from lacustrine sediments of the Qaidam Basin in northeastern Qinghai-Tibetan Plateau and its palaeoclimatic implications
	An, FuYuan 1,2; Ma, HaiZhou 1; Wei, HaiCheng 1; Lai, ZhongPing 1
刊名	AEOLIAN RESEARCH
	2012-06-01
卷号	4 页码:17-30
关键词	Qinghai-tibetan Plateau (Qtp) Qaidam Basin Saparating Aeolian Component From Lacustrine Sediments Grain Size And Geochemistry Analysis LAndform Process And Environmental Change East Asian Winter Monsoon (Eawm)
文献子类	Article
英文摘要	Qarhan playa is located in the eastern-central Qaidam Basin in the northeastern Qinghai-Tibetan Plateau. As a lake-depocenter since the Pleistocene and surrounded by Gobi and yardang fields, it might have deposited abundant aeolian materials. Distinguishing its aeolian signature from lacustrine sediments is important for understanding the landform processes and environmental changes, which is the focus of the current study. Based on major-elements analysis, microtextures of quartz grains, and features of grain-size frequency curves and other grain-size parameters, we demonstrate the existence of aeolian component in the lacustrine sequences of a 102 m core (ISL1A). Grain-size distribution curve statistics on 60 samples from two extreme palaeoclimate environments (hyperarid and humid), as well as multi-proxies records comparison, indicate that the mode at about 40 pm represents the aeolian component and the 10-70 pm fraction of grain-size is a valid proxy of East Asian winter monsoon, and that the 70-650 pm fraction represents the intensity of dust storms. The erosive lacustrine sediments in the western Qaidam Basin and the alluvial/fluvial fans in nearby piedmont are probably important sources for these aeolian materials. The similarities of major-element data for samples from the Qaidam Basin (both lacustrine and loess), Qinghai Lake (loess), and the Chinese Loess Plateau (loess) indicate that the Qaidam Basin is a dust source for the loess in Qinghai Lake and the Chinese Loess Plateau. (C) 2011 Elsevier B.V. All rights reserved.
WOS关键词	CHINESE LOESS PLATEAU ; HOLOCENE EOLIAN ACTIVITY ; GRAIN-SIZE DISTRIBUTION ; ASIAN WINTER MONSOON ; CHAKA SALT LAKE ; DUST TRANSPORT ; NORTH PACIFIC ; LATE PLEISTOCENE ; CLIMATIC-CHANGE ; INNER-MONGOLIA
WOS研究方向	Physical Geography
语种	英语
WOS记录号	WOS:000302765700002
内容类型	期刊论文
源URL	[http://ir.isl.ac.cn/handle/363002/5649]
专题	青海盐湖研究所_青海盐湖研究所知识仓储青海盐湖研究所_盐湖地质与环境实验室中国科学院青海盐湖研究所
作者单位	1.Chinese Acad Sci, Key Lab Salt Lake Resources & Chem, Qinghai Inst Salt Lakes, Xining 810008, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	An, FuYuan,Ma, HaiZhou,Wei, HaiCheng,et al. Distinguishing aeolian signature from lacustrine sediments of the Qaidam Basin in northeastern Qinghai-Tibetan Plateau and its palaeoclimatic implications[J]. AEOLIAN RESEARCH,2012,4:17-30.
APA	An, FuYuan,Ma, HaiZhou,Wei, HaiCheng,&Lai, ZhongPing.(2012).Distinguishing aeolian signature from lacustrine sediments of the Qaidam Basin in northeastern Qinghai-Tibetan Plateau and its palaeoclimatic implications.AEOLIAN RESEARCH,4,17-30.
MLA	An, FuYuan,et al."Distinguishing aeolian signature from lacustrine sediments of the Qaidam Basin in northeastern Qinghai-Tibetan Plateau and its palaeoclimatic implications".AEOLIAN RESEARCH 4(2012):17-30.