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Magnetostratigraphic determination of the age of ancient Lake Qinghai, and record of the East Asian monsoon since 4.63 Ma
Fu, CF (Fu, Chaofeng)[ 1,2,3 ]; An, ZS (An, Zhisheng)[ 1 ]; Qiang, XK (Qiang, Xiaoke)[ 1 ]; Bloemendal, J (Bloemendal, Jan)[ 4,5 ]; Song, YG (Song, Yougui)[ 1 ]; Chang, H (Chang, Hong)[ 1 ]
2013-08-30
发表期刊GEOLOGY
卷号41期号:8页码:875-878
文章类型期刊论文
摘要

Lake Qinghai, in North China, is the largest interior plateau lake in Central Asia, and is sensitive to climate change and the environmental effects of Tibetan Plateau uplift. We have obtained an almost continuous 626 m long sediment core from an in-filled part of the southern lake basin, which documents both the age of the origin of the lake and the evolution of the East Asian monsoon during the Late Cenozoic. High-resolution magnetostratigraphy provides a chronology back to ca. 5.1 Ma. Analysis of lithofacies and depositional environments reveal that the change from eolian to lacustrine facies occurred at ca. 4.63 Ma, corresponding to a shift from an arid or semi-arid to a more humid climate, which resulted in the origin of Lake Qinghai. Changes in sediment lithology and mean grain size indicate that the lake level fluctuated considerably, superimposed on a long-term trend from higher to lower levels in response to variations in the East Asian Monsoon. This archive is a significant additional source of information on regional and global environmental change, complementing the existing records from north China, which are mainly based on analysis of loess deposits.

DOI10.1130/G34418.1
收录类别SCI ; EI
语种英语
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被引频次:22[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/9911
专题古环境研究室
通讯作者Fu, CF (Fu, Chaofeng)[ 1,2,3 ]
作者单位1.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth and Environment, CAS, Xi’an, Shaanxi, 710075, China;
2.Key Laboratory of Western Mineral Resources and Geological Engineering, Ministry of Education of China & Chang’an university,Xi’an, Shaanxi, 710054, China;
3.School of Environmental Sciences, University of Liverpool, Roxby Building, Liverpool L69 3BX, UK;
4.2011 Cooperative Innovation Center for Arid Environment and Climate Changes, Lanzhou University, Gansu, 730000, China
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GB/T 7714
Fu, CF ,An, ZS ,Qiang, XK ,et al. Magnetostratigraphic determination of the age of ancient Lake Qinghai, and record of the East Asian monsoon since 4.63 Ma[J]. GEOLOGY,2013,41(8):875-878.
APA Fu, CF ,An, ZS ,Qiang, XK ,Bloemendal, J ,Song, YG ,&Chang, H .(2013).Magnetostratigraphic determination of the age of ancient Lake Qinghai, and record of the East Asian monsoon since 4.63 Ma.GEOLOGY,41(8),875-878.
MLA Fu, CF ,et al."Magnetostratigraphic determination of the age of ancient Lake Qinghai, and record of the East Asian monsoon since 4.63 Ma".GEOLOGY 41.8(2013):875-878.
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