气候变化领域集成服务门户(CCPortal): The dust provenance and transport mechanism for the Chengdu Clay in the Sichuan Basin, China

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DOI	10.1016/j.catena.2014.04.018
	The dust provenance and transport mechanism for the Chengdu Clay in the Sichuan Basin, China
	Feng, Jin-Liang; Hu, Zhao-Guo; Ju, Jian-Ting; Lin, Yong-Chong
通讯作者	Feng, JL (通讯作者)
发表日期	2014
ISSN	0341-8162
EISSN	1872-6887
起始页码	68
结束页码	80
卷号	121
英文摘要	The Chengdu Clay in the Sichuan Basin, China, was named by Thorp and Dye in 1936. The genesis, dust provenance and transport mechanism for the Chengdu Clay, however, are still debated. In the present work, the Chengdu Clay and adjacent loess from the eastern Tibetan Plateau, the Chinese Loess Plateau and the Qinling Mountains were investigated. The content and grain size distribution of quartz, quartz delta O-18, Sm-Nd isotopic system, rare earth elements and other trace element concentrations for the Chengdu Clay and its adjacent loess were analyzed. Based on comparison and spatial variation analysis, the results confirm that the Chengdu Clay is of aeolian origin. The dust provenance of the Chengdu Clay differs from those of the adjacent loess. The Chengdu Clay is possibly of local origin and is transported by an ancient katabatic wind over a short distance during glacial and stadial periods. The alluvial sediments in the northwestern Sichuan Basin are possibly the major sources of the Chengdu Clay. There is little possibility of an effective aeolian transport bringing dust from the Tibetan Plateau, the arid area in northwestern China or Inner Mongolia into the Sichuan Basin, where it may be deposited to form the Chengdu Clay. Thus, long-range dust transport by the East Asian winter monsoon, the westerly jet or the Tibetan Plateau winter monsoon possibly plays a minor role in controlling the magnitude of the dust flux of the Chengdu Clay in the Sichuan Basin. (C) 2014 Elsevier B.V. All rights reserved.
关键词	TIBETAN-PLATEAU GRAIN-SIZE AEOLIAN DUST GEOCHEMICAL EVIDENCE NORTHERN-HEMISPHERE EOLIAN DEPOSITION QUATERNARY LOESS LATE PLEISTOCENE EASTERN MARGIN CLIMATE-CHANGE
英文关键词	Loess; Chengdu Clay; Dust transport; Sichuan Basin; Tibetan Plateau; Chinese Loess Plateau
语种	英语
WOS研究方向	Geology ; Agriculture ; Water Resources
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS记录号	WOS:000339694000007
来源期刊	CATENA
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/258250
推荐引用方式 GB/T 7714	Feng, Jin-Liang,Hu, Zhao-Guo,Ju, Jian-Ting,et al. The dust provenance and transport mechanism for the Chengdu Clay in the Sichuan Basin, China[J]. 中国科学院青藏高原研究所,2014,121.
APA	Feng, Jin-Liang,Hu, Zhao-Guo,Ju, Jian-Ting,&Lin, Yong-Chong.(2014).The dust provenance and transport mechanism for the Chengdu Clay in the Sichuan Basin, China.CATENA,121.
MLA	Feng, Jin-Liang,et al."The dust provenance and transport mechanism for the Chengdu Clay in the Sichuan Basin, China".CATENA 121(2014).