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

文献类型：期刊论文

作者Li, Yue1,2; Song, Yougui1,3; Fitzsimmons, Kathryn E.2; Chen, Xiuling4; Prud'homme, Charlotte2; Zong, Xiulan1,5,6
刊名PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
出版日期2020-12-01
卷号559页码:17
ISSN号0031-0182
关键词Loess Tian Shan Trace element geochemistry Fingerprinting technique Palaeoclimatic reconstruction
DOI10.1016/j.palaeo.2020.109972
通讯作者Song, Yougui(syg@ieecas.cn)
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.
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
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
语种英语
出版者ELSEVIER
WOS记录号WOS:000591242700015
资助机构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
源URL[http://ir.ieecas.cn/handle/361006/15671]  
专题地球环境研究所_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.

入库方式： OAI收割

来源：地球环境研究所

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