干旱区生态环境知识资源中心(Arid): Geochemical evidence for provenance diversity of loess in southern China and its implications for glacial aridification of the northern subtropical region

Arid

DOI	10.1016/j.quascirev.2019.04.002
	Geochemical evidence for provenance diversity of loess in southern China and its implications for glacial aridification of the northern subtropical region
	Han, Long 1,2; Hao, Qingzhen 1,2,3; Qiao, Yansong 4; Wang, Luo 1,2,5; Peng, Shuzhen 6; Li, Nan 7; Gao, Xinbo 1,5; Fu, Yu 1,2; Xu, Bin 1,2,5; Gu, Zhaoyan 1,2,5
通讯作者	Hao, Qingzhen
来源期刊	QUATERNARY SCIENCE REVIEWS
ISSN	0277-3791
出版年	2019
卷号	212 页码:149-163
英文摘要	The thick 'Xiashu loess' in southern China is distributed not only in the Yangtze River valley, but also and most extensively in the region between the Qinling Mountains and the lower reaches of the Yangtze River. However, there are few studies of the provenance and climatic implications of the Xiashu loess in this latter region. Here we present the results of a provenance study of Last Glacial loess samples from twenty-two typical Xiashu loess sections, using the major and trace element composition as a provenance indicator. Seventeen of the sites are located to the north of the Yangtze River and our primary aim was to determine the provenance of the Xiashu loess within this region. Our results indicate that the alluvial plain located mainly in the present drainage area of the Huai River was the primary dust source for the Xiashu loess in this region. The occurrence of multiple local dust sources within this alluvial plain, suggested by their geochemical heterogeneity, indicates that the alluvial plain experienced intensified aridity which caused it to become a dust source for local loess deposits in northern subtropical China during the Last Glacial. Our study provides strong evidence to challenge the long-held view that the occurrence of Xiashu loess resulted from the southward incursion of the CLP loess deposits sourced from deserts of the Asian interior, and it confirms the substantial role of aridification of the present humid northern subtropical region for dust emission to the climate system during the Last Glacial. (C) 2019 Elsevier Ltd. All rights reserved.
英文关键词	Xiashu loess Provenance Geochemistry Alluvial plain Aridification Last glacial period Huai river Yangtze river
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000468707400012
WOS关键词	EASTERN QINLING MOUNTAINS ; RARE-EARTH-ELEMENTS ; LATE QUATERNARY LOESS ; U-PB AGE ; AEOLIAN SANDS ; DUST STORMS ; GRAIN-SIZE ; GEOMORPHOLOGICAL EVIDENCE ; ISOTOPIC CONSTRAINTS ; PALEOSOL SEQUENCE
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
来源机构	北京大学 ; 中国科学院地质与地球物理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218271
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Ctr Excellence Life & Paleoenvironm, Beijing 100044, Peoples R China; 4.Chinese Acad Geol Sci, Inst Geomech, Beijing 100081, Peoples R China; 5.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China; 6.Taishan Univ, Key Lab Tourism & Resources Environm Univ Shandon, Tai An 271021, Shandong, Peoples R China; 7.Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Han, Long,Hao, Qingzhen,Qiao, Yansong,et al. Geochemical evidence for provenance diversity of loess in southern China and its implications for glacial aridification of the northern subtropical region[J]. 北京大学, 中国科学院地质与地球物理研究所,2019,212:149-163.
APA	Han, Long.,Hao, Qingzhen.,Qiao, Yansong.,Wang, Luo.,Peng, Shuzhen.,...&Gu, Zhaoyan.(2019).Geochemical evidence for provenance diversity of loess in southern China and its implications for glacial aridification of the northern subtropical region.QUATERNARY SCIENCE REVIEWS,212,149-163.
MLA	Han, Long,et al."Geochemical evidence for provenance diversity of loess in southern China and its implications for glacial aridification of the northern subtropical region".QUATERNARY SCIENCE REVIEWS 212(2019):149-163.