Origin of loess deposits in the North Tian Shan piedmont, Central Asia

doi:10.1016/j.palaeo.2020.109972

IEECAS OpenIR > 古环境研究室

	Origin of loess deposits in the North Tian Shan piedmont, Central Asia
	Li, Yue 1,2; Song, Yougui1,3 ; Fitzsimmons, Kathryn E.2; Chen, Xiuling 4; Prud'homme, Charlotte 2; Zong, Xiulan 1,5,6
通讯作者	Song, Yougui(syg@ieecas.cn)
	2020-12-01
发表期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN	0031-0182
卷号	559 页码:17
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.
关键词	Loess Tian Shan Trace element geochemistry Fingerprinting technique Palaeoclimatic reconstruction
DOI	10.1016/j.palaeo.2020.109972
关键词[WOS]	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
收录类别	SCI ; SCI
语种	英语
资助项目	Chinese Academy of Sciences[XDB40000000] ; Chinese Academy of Sciences[XDB26000000] ; Natural Science Foundation of China[41977385] ; National Key Research and Development Program of China[2016YFA0601902] ; State Key Laboratory of Loess and Quaternary Geology[SKLLQGPY2006]
WOS研究方向	Physical Geography ; Geology ; Paleontology
项目资助者	Chinese Academy of Sciences ; Natural Science Foundation of China ; National Key Research and Development Program of China ; State Key Laboratory of Loess and Quaternary Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号	WOS:000591242700015
出版者	ELSEVIER
引用统计	被引频次：33[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/15672
专题	古环境研究室第四纪科学与全球变化卓越创新中心
通讯作者	Song, Yougui
作者单位	1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, 97 Yanxiang Rd, Xian 710061, Peoples R China 2.Max Planck Inst Chem, Res Grp Terr Palaeoclimates, D-55128 Mainz, Germany 3.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 4.Fujian Normal Univ, Inst Geog, Fuzhou 350007, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 6.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]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2020,559:17.
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,559,17.
MLA	Li, Yue,et al."Origin of loess deposits in the North Tian Shan piedmont, Central Asia".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 559(2020):17.