Origin of loess deposits in the North Tian Shan piedmont, Central Asia
Clicks：400
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DOI
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Key words
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Loess, Tian Shan, Traceelement geochemistry, Fingerprinting technique, Palaeoclimatic reconstruction
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Related data
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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 ontrace 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 piedmontin northern Kyrgyzstan and southern Kazakhstan.The unsorted sediments on the piedmont slopes and alluvial-proluvial plain sare common sources for both deserts and loess to the north of the TianShan.Dune sediments are not the mainsource of the fine-grained loess.Origin and formation of Central Asian loess is strongly dependent on local topographic context and winddy namics. Only once loess provenance and formation has been understood across both space and time can reliable interpretations of palaeoclimatic proxies in the sedeposits be made.
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Data description
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a. Description of Intellectual Property Rights When using a dataset, please refer to the following documents in the article：
Li, Y., Song, Y., Fitzsimmons, K.E., Chen, X., Prud'homme, C., Zong, X., 2020. Origin of loess deposits in the North Tian Shan piedmont, Central Asia. Palaeogeography, Palaeoclimatology, Palaeoecology 559, 109972. 10.1016/j.palaeo.2020.109972
b. The data labels refer to the following specifications： Data sources refer to the following specifications：
East Asian Paleoenvironmental Science Database (http://paleodata.ieecas.cn/index.aspx)，National Earth System Science Data Center, National Science & Technology Infrastructure of China (http://www.geodata.cn).
Acknowledgments refer to the following specifications:
Acknowledgement for the data support from “East Asian Paleoenvironmental Science Database (http://paleodata.ieecas.cn/index.aspx)，National Earth System Science Data Center, National Science & Technology Infrastructure of China. (http://www.geodata.cn)”.
c. Contacts Name:
Song Yougui et al. & Data processing group
Company: Institute of Earth Environment, Chinese Academy of Sciences
Tel: 029-62336213
Email: eapsd@ieecas.cn
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Dataset format
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EXCEL
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Data type
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Aerosol and Environment/Aerosol and Environment/Aerosol and Environment
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Data sources
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authors supply
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Enclosure
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[download]
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Related pictures
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 Contact card |
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Name：Dr. Hongli Zhao |
E-mail：zhaohl@ieecas.cn |
| Company：IEECAS |
Telephone：029-62336213 |