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DOI	10.1130/G32296.1
	Qaidam Basin and northern Tibetan Plateau as dust sources for the Chinese Loess Plateau and paleoclimatic implications
	Pullen, Alex; Kapp, Paul; McCallister, Andrew T.; Chang, Hong; Gehrels, George E.; Garzione, Carmala N.; Heermance, Richard V.; Ding, Lin
通讯作者	Pullen, A (通讯作者)
发表日期	2011
ISSN	0091-7613
起始页码	1031
结束页码	1034
卷号	39 期号:11
英文摘要	The Chinese Loess Plateau of central Asia is composed of interbedded loess and paleosol layers, deposited during glacial and interglacial cycles, respectively, during the past similar to 2.5 m.y. Understanding the provenance of loess is fundamental to reconstructing wind patterns during Quaternary glacial periods. We determined and compared U-Pb ages on zircon crystals from Loess Plateau strata and potential source areas. The results indicate that the loess was largely derived from the Qaidam Basin and the northern Tibetan Plateau to the west, both of which exhibit spatially extensive geomorphic landforms indicative of past (interpreted as pre-Holocene) wind erosion and/or deflation by westerly winds. This challenges the current paradigm that the loess of the Chinese Loess Plateau was largely sourced from deserts located to the northwest, as observed in the modern interglacial climate. We propose that during glacial periods, the mean annual positions of the polar jet streams were shifted equatorward, resulting in more southerly tracks for dust-generating storms and suppression of the East Asian monsoon by inhibiting the subtropical jet from shifting northward across the Tibetan Plateau.
关键词	GARZE FOLD BELT TECTONIC EVOLUTION ISOTOPE GEOCHEMISTRY WESTERLY JET ASIAN DUST DEEP-SEA PROVENANCE CLIMATE RECORD CONSTRAINTS
语种	英语
WOS研究方向	Geology
WOS类目	Geology
WOS记录号	WOS:000296607600012
来源期刊	GEOLOGY
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/257947
推荐引用方式 GB/T 7714	Pullen, Alex,Kapp, Paul,McCallister, Andrew T.,et al. Qaidam Basin and northern Tibetan Plateau as dust sources for the Chinese Loess Plateau and paleoclimatic implications[J]. 中国科学院青藏高原研究所,2011,39(11).
APA	Pullen, Alex.,Kapp, Paul.,McCallister, Andrew T..,Chang, Hong.,Gehrels, George E..,...&Ding, Lin.(2011).Qaidam Basin and northern Tibetan Plateau as dust sources for the Chinese Loess Plateau and paleoclimatic implications.GEOLOGY,39(11).
MLA	Pullen, Alex,et al."Qaidam Basin and northern Tibetan Plateau as dust sources for the Chinese Loess Plateau and paleoclimatic implications".GEOLOGY 39.11(2011).