干旱区生态环境知识资源中心(Arid): Origin of loess deposits in the North Tian Shan piedmont, Central Asia

Arid

DOI	10.1016/j.palaeo.2020.109972
	Origin of loess deposits in the North Tian Shan piedmont, Central Asia
	Li, Yue; Song, Yougui; Fitzsimmons, Kathryn E.; Chen, Xiuling; Prud'homme, Charlotte; Zong, Xiulan
通讯作者	Song, YG
来源期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN	0031-0182
EISSN	1872-616X
出版年	2020
卷号	559
英文摘要	Loess deposits are widely distributed along the mountain piedmonts of Central Asia. The transport processes and origins of Central Asian loess sediments remain poorly understood. Here we investigate the origin and formation of loess along the northern piedmont of the Tian Shan based on trace element (including rare earth element) ratios and multidimensional scaling analysis. Our results indicate that the loess has undergone weak chemical weathering. Using a selection of geochemical fingerprinting techniques based on Pearson correlation and Kruskal-Wallis H tests, we establish a genetic link between alluvial-proluvial fans/plains, deserts, and loess along the Tian Shan piedmont in northern Kyrgyzstan and southern Kazakhstan. The unsorted sediments on the piedmont slopes and alluvial-proluvial plains are common sources for both deserts and loess to the north of the Tian Shan. Dune sediments are not the main source of the fine-grained loess. Origin and formation of Central Asian loess is strongly dependent on local topographic context and wind dynamics. Only once loess provenance and formation has been understood across both space and time can reliable interpretations of palaeoclimatic proxies in these deposits be made.
英文关键词	Loess Tian Shan Trace element geochemistry Fingerprinting technique Palaeoclimatic reconstruction
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000591242700015
WOS关键词	RARE-EARTH-ELEMENTS ; ARID CENTRAL-ASIA ; GRAIN-SIZE DISTRIBUTION ; LATE QUATERNARY LOESS ; EASTERN CENTRAL-ASIA ; CHINESE LOESS ; TIEN-SHAN ; PALEOSOL SEQUENCE ; GEOCHEMICAL EVIDENCE ; ILI BASIN
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS研究方向	Physical Geography ; Geology ; Paleontology
来源机构	中国科学院地球环境研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327580
作者单位	[Li, Yue; Song, Yougui; Zong, Xiulan] Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, 97 Yanxiang Rd, Xian 710061, Peoples R China; [Li, Yue; Fitzsimmons, Kathryn E.; Prud'homme, Charlotte] Max Planck Inst Chem, Res Grp Terr Palaeoclimates, D-55128 Mainz, Germany; [Song, Yougui] CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China; [Chen, Xiuling] Fujian Normal Univ, Inst Geog, Fuzhou 350007, Peoples R China; [Zong, Xiulan] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Zong, Xiulan] Chinese Acad Sci, Res Ctr Ecol & Environm Cent Asia, Urumqi 830011, Peoples R China
推荐引用方式 GB/T 7714	Li, Yue,Song, Yougui,Fitzsimmons, Kathryn E.,et al. Origin of loess deposits in the North Tian Shan piedmont, Central Asia[J]. 中国科学院地球环境研究所,2020,559.
APA	Li, Yue,Song, Yougui,Fitzsimmons, Kathryn E.,Chen, Xiuling,Prud'homme, Charlotte,&Zong, Xiulan.(2020).Origin of loess deposits in the North Tian Shan piedmont, Central Asia.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,559.
MLA	Li, Yue,et al."Origin of loess deposits in the North Tian Shan piedmont, Central Asia".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 559(2020).