干旱区生态环境知识资源中心(Arid): Geochemical characteristics and provenance of aeolian sediments in the Yarlung Tsangpo valley, Southern Tibetan Plateau

Arid

DOI	10.1007/s12665-021-09928-5
	Geochemical characteristics and provenance of aeolian sediments in the Yarlung Tsangpo valley, Southern Tibetan Plateau
	Ling, Zhiyong; Li, Jiansen; Jin, Jianhui; Wang, Jianping; Kong, Fancui; Chen, Liang
通讯作者	Ling, ZY (corresponding author), Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Qinghai Prov Key Lab Geol & Environm Salt Lakes, Xining 810008, Peoples R China. ; Ling, ZY (corresponding author), Lanzhou Univ, Coll Earth & Environm Sci, Key Lab West Chinas Environm Syst, Minist Educ, Lanzhou 730000, Peoples R China.
来源期刊	ENVIRONMENTAL EARTH SCIENCES
ISSN	1866-6280
EISSN	1866-6299
出版年	2021
卷号	80 期号:18
英文摘要	Aeolian sediments and other surface deposits are widespread along the broad valleys across the Yarlung Tsangpo (YT) catchment on the southern Tibetan Plateau (TP) and are considered important sources of global dust. However, geochemical differentiation in different reaches, sedimentary circulation, and dust transmission processes in the YT valleys are poorly understood. In this study, 47 samples of different types of sediments were collected from different YT valleys, and the major and trace-element (excluding rare-earth elements, REEs) compositions of 42 bulk samples and the trace elements (including REEs) compositions for the fine (< 75 mu m) fractions of 21 samples were determined. The results show that the different sediments are predominantly sourced from local felsic bedrocks, originating mainly from the Lhasa terrane through the tributary systems, which are primarily controlled by the physical weathering, and only incipient chemical weathering. The geochemical characteristics of the various sediment types exhibited spatial differentiation because of the complex structure and topography, intense surface circulation, and mixing processes of the detritus from both banks. Owing to the complexity of regional surface processes, conventional non-isotopic geochemical methods might not be the most effective tool for sediment provenance tracing on a large spatial scale. Nevertheless, aeolian deposits in the broad valleys across YT mainly have a near-source clastic supply of local origins, belonging to a regional self-cycling process, which might not be transported by wind across different reaches because of high topographic obstacles.
英文关键词	Aeolian sediments Geochemical characteristics Provenance Yarlung Tsangpo valley Southern Tibetan Plateau
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000695949500009
WOS关键词	CHINESE LOESS PLATEAU ; MAJOR-ELEMENT ; RIVER ; DUST ; DESERT ; TRANSPORT ; SEQUENCE ; DEPOSITS ; EVENT
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363111
作者单位	[Ling, Zhiyong; Li, Jiansen; Wang, Jianping; Kong, Fancui; Chen, Liang] Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Comprehens & Highly Efficient Utilizat Sa, Qinghai Prov Key Lab Geol & Environm Salt Lakes, Xining 810008, Peoples R China; [Ling, Zhiyong] Lanzhou Univ, Coll Earth & Environm Sci, Key Lab West Chinas Environm Syst, Minist Educ, Lanzhou 730000, Peoples R China; [Jin, Jianhui] Fujian Normal Univ, Inst Geog, Key Lab Humid Subtrop Ecogeog Proc, Minist Educ, Fuzhou 350007, Peoples R China
推荐引用方式 GB/T 7714	Ling, Zhiyong,Li, Jiansen,Jin, Jianhui,et al. Geochemical characteristics and provenance of aeolian sediments in the Yarlung Tsangpo valley, Southern Tibetan Plateau[J]. 兰州大学,2021,80(18).
APA	Ling, Zhiyong,Li, Jiansen,Jin, Jianhui,Wang, Jianping,Kong, Fancui,&Chen, Liang.(2021).Geochemical characteristics and provenance of aeolian sediments in the Yarlung Tsangpo valley, Southern Tibetan Plateau.ENVIRONMENTAL EARTH SCIENCES,80(18).
MLA	Ling, Zhiyong,et al."Geochemical characteristics and provenance of aeolian sediments in the Yarlung Tsangpo valley, Southern Tibetan Plateau".ENVIRONMENTAL EARTH SCIENCES 80.18(2021).