Provenance of loess deposits in the Eastern Qinling Mountains (central China) and their implications for the paleoenvironment

CORC > 古脊椎动物与古人类研究所 > 中国科学院古脊椎动物与古人类研究所 > 古人类及旧石器研究室

	Provenance of loess deposits in the Eastern Qinling Mountains (central China) and their implications for the paleoenvironment
	Zhang, Hongyan 1; Lu, Huayu 1; Jiang, Shao-Yong 2; Vandenberghe, Jef 1,3; Wang, Shejiang 4; Cosgrove, Richard 5; huayulu@nju.edu.cn
刊名	QUATERNARY SCIENCE REVIEWS
	2012-06-08
卷号	43 页码:94-102
关键词	Eastern Qinling Mountains Chinese Loess Plateau Loess Provenance East Asian Monsoon Paleolithic
ISSN号	0277-3791
文献子类	Article
英文摘要	Loess deposits in the Eastern Qinling Mountains (central China) provide a detailed archive for reconstructing the paleoenvironment during early hominin occupation. The study of the loess deposits also provides a unique opportunity to understand Pleistocene atmospheric circulation in this transitional climatic zone. However, the provenance and formation of the loess deposits were not well understood until now. In this paper, we report on new geomorphologic investigations and depositional analyses of the loess deposits. The results suggest that Gobi deserts and drylands in northern and northwestern China were one of the dust sources. These loess deposits show similar geochemical composition as the average upper crust (UCC), and may indicate that they experienced multiple sedimentary processes, with the dust being well mixed before deposition. However, the higher Sr-87/Sr-86 ratios (between 0.719650 and 0.721043) and extremely low (Nd)(0) values (between -11.98 and -18.97), which are different from the typical loess of the Chinese Loess Plateau, demonstrate that proximal clastic sediments that were apparently derived from the weathered Qinling orogen bedrocks, form the other important source for the loess deposits. The chemical Index of Alteration [CIA = Al2O3/(Al2O3 + CaO* + Na2O + K2O) x 100] and Chemical Proxy of Alteration [CPA = 100 x Al2O3/(Al2O3 + Na2O)], both in molar proportions show that the loess has experienced intense pedogenesis. We conclude that the loess deposit has a mixed provenance. The palaeoclimate in the Eastern Qinling Mountains remained mild in the glacial periods due to the topography and unique geographic locations, providing a suitable place for hominine occupation. (C) 2012 Elsevier Ltd. All rights reserved.
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WOS关键词	ASIAN DUST ; GEOCHEMICAL EVIDENCE ; NORTHERN CHINA ; PALEOCLIMATIC IMPLICATIONS ; PALEOSOL SEQUENCE ; SANMEN GORGE ; YELLOW-RIVER ; EOLIAN DUST ; GRAIN-SIZE ; PLATEAU
WOS研究方向	Physical Geography ; Geology
语种	英语
WOS记录号	WOS:000305500300007
公开日期	2013-11-27
内容类型	期刊论文
源URL	[http://119.78.100.205/handle/311034/4286]
专题	古脊椎动物与古人类研究所_古人类及旧石器研究室
通讯作者	huayulu@nju.edu.cn
作者单位	1.Nanjing Univ, Inst Climate & Global Change Res, Sch Geog & Oceanog Sci, Nanjing 210093, Jiangsu, Peoples R China 2.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing 210093, Jiangsu, Peoples R China 3.Vrije Univ Amsterdam, Inst Earth Sci, NL-1081 HV Amsterdam, Netherlands 4.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Joint Lab Human Evolut & Archaeometry, Beijing 100044, Peoples R China 5.La Trobe Univ, Archaeol Program, Sch Hist & European Studies, Bundoora, Vic 3086, Australia
推荐引用方式 GB/T 7714	Zhang, Hongyan,Lu, Huayu,Jiang, Shao-Yong,et al. Provenance of loess deposits in the Eastern Qinling Mountains (central China) and their implications for the paleoenvironment[J]. QUATERNARY SCIENCE REVIEWS,2012,43:94-102.
APA	Zhang, Hongyan.,Lu, Huayu.,Jiang, Shao-Yong.,Vandenberghe, Jef.,Wang, Shejiang.,...&huayulu@nju.edu.cn.(2012).Provenance of loess deposits in the Eastern Qinling Mountains (central China) and their implications for the paleoenvironment.QUATERNARY SCIENCE REVIEWS,43,94-102.
MLA	Zhang, Hongyan,et al."Provenance of loess deposits in the Eastern Qinling Mountains (central China) and their implications for the paleoenvironment".QUATERNARY SCIENCE REVIEWS 43(2012):94-102.