气候变化领域集成服务门户(CCPortal): Provenance of the upper Miocene-Pliocene Red Clay deposits of the Chinese loess plateau

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DOI	10.1016/j.epsl.2014.09.026
	Provenance of the upper Miocene-Pliocene Red Clay deposits of the Chinese loess plateau
	Nie, Junsheng; Peng, Wenbin; Moeller, Andreas; Song, Yougui; Stockli, Daniel F.; Stevens, Thomas; Horton, Brian K.; Liu, Shanpin; Bird, Anna; Oalmann, Jeffrey; Gong, Hujun; Fang, Xiaomin
通讯作者	Nie, JS (通讯作者)
发表日期	2014
ISSN	0012-821X
EISSN	1385-013X
起始页码	35
结束页码	47
卷号	407
英文摘要	A clear understanding of the provenance of late Cenozoic Chinese loess and the underlying Red Clay deposits will shed light on the history and mechanisms of Asian aridification. Although much progress has been made in understanding the source of Quaternary loess on the Chinese Loess Plateau (CLP), the provenance of the underlying upper Miocene-Pliocene Red Clay sequence is largely unknown. Here we present the first provenance history of the Red Clay sequence based on zircon U-Pb ages from the central CLP. Visual and statistical analyses of the U-Pb age populations and comparison with results from potential source regions reveals that (I) the lowermost Red Clay of the late Miocene (depositional age of similar to 8 Ma) is likely sourced from the nearby Liupan Mountains and the Qaidam Basin; (2) the middle Red Clay (5.5-4 Ma) of the early-mid Pliocene is sourced mainly from the Taklamakan desert, transported via lower-level westerly winds; (3) the upper Red Clay of the late Pliocene (similar to 3 Ma) is sourced from mixed areas, although western source materials from middle-northern Tibetan plateau (including Qaidam Desert sediments and materials eroded from the Qilian Mountains) sediments appear to dominate; and (4) the Quaternary loess is also sourced from mixed source regions, albeit with dominant northern CLP proximal desert sediments transported via winter monsoon winds, which in turn may be transported from mountain source regions of the northeastern Tibet and Gobi Altai via major river systems. This long term shift in sources suggests a progressive eastward aridification during the Pliocene in Asia with the specific timing of provenance shifts synchronous with large-scale climatic transitions and Tibetan uplift, demonstrating that Asian desertification is controlled by both factors. (C) 2014 Elsevier B.V. All rights reserved.
关键词	RESOLUTION MAGNETO STRATIGRAPHY NORTHEASTERN TIBETAN PLATEAU U-PB AGES QAIDAM BASIN GRAIN-SIZE NORTHERN CHINA PALEOCLIMATIC SIGNIFICANCE ATMOSPHERIC CIRCULATION SURROUNDING REGIONS TECTONIC EVOLUTION
英文关键词	provenance; Red Clay; loess; Pliocene; U-Pb geochronology; zircon
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000345179300004
来源期刊	EARTH AND PLANETARY SCIENCE LETTERS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258402
推荐引用方式 GB/T 7714	Nie, Junsheng,Peng, Wenbin,Moeller, Andreas,et al. Provenance of the upper Miocene-Pliocene Red Clay deposits of the Chinese loess plateau[J]. 中国科学院青藏高原研究所,2014,407.
APA	Nie, Junsheng.,Peng, Wenbin.,Moeller, Andreas.,Song, Yougui.,Stockli, Daniel F..,...&Fang, Xiaomin.(2014).Provenance of the upper Miocene-Pliocene Red Clay deposits of the Chinese loess plateau.EARTH AND PLANETARY SCIENCE LETTERS,407.
MLA	Nie, Junsheng,et al."Provenance of the upper Miocene-Pliocene Red Clay deposits of the Chinese loess plateau".EARTH AND PLANETARY SCIENCE LETTERS 407(2014).