干旱区生态环境知识资源中心(Arid): Grain-size Characteristics and Climate Variability in TMS5e Sequence of Tumen Section in Southern Tengger Desert,Northwestern China

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	Grain-size Characteristics and Climate Variability in TMS5e Sequence of Tumen Section in Southern Tengger Desert,Northwestern China
	Wen Xiaohao; Li Baosheng; Wang Fengnian; Zheng Yanming; Niu Dongfeng; Si Yuejin; Ou Xianjiao
来源期刊	Chinese Geographical Science
ISSN	1002-0063
出版年	2012
卷号	22 期号:1 页码:48-62
英文摘要	The TMS5e sequence from the Tumen section,at the southern edge of Tengger Desert in the northwestern China,is synchronous with Marine Isotope Stage 5e(MIS5e).It consists of 16 layers of aeolian dune sands,11 layers of lacustrine loess-like facies,and 5 layers of lacustrine facies.The results of grain-size analysis shows that the palaeo-mobile dune sands,palaeo-fixed to semi-fixed dune sands and loess-like sandy loams are mainly composed of sands,ranging from 70% to 96%;their silt contents ranged from 4% to 20%,and their clay contents ranged from 1% to 5%;the climate under which the aeolian dune sands were deposited is similar to that under which modern mobile dune sands form,which is caused by the dominance of the cold,dry East Asian winter monsoon.In contrast,the lacustrine loess-like facies and lacustrine facies had a lower sand contents than those of the three aeolian dune sands,but have higher silt and clay contents,most of their sand content ranged from 30% to 60%,their silt contents ranged from 35% to 55%,and their clay contents ranged from 6% to 20%.The lacustrine loess-like facies and lacustrine facies formed under the influence of the warm,humid East Asian summer monsoon based on their similarity with modern sediments.The grain-size indicator Mz(mean grain diameter) and the SC/D value in the TMS5e sequence indicate climatic insta-bility at the southern edge of the Tengger Desert during MIS5e,with at least 14 fluctuations between a warm,humid climate and a cold,dry climate,divided into five stages:TMS5e5(139 kyr to 129.3 kyr B.P.),TMS5e4(129.3 kyr to 124 kyr B.P.),TMS5e3(124 kyr to 119.5 kyr B.P.),TMS5e2(119.5 kyr to 116.5 kyr B.P.),and TMS5e1(116.5 kyr to 113.7 kyr B.P.).These correspond roughly to MIS5e5,MIS5e4,MIS5e3,MIS5e2,and MIS5e1,respectively,in the GRIP ice core data.
英文关键词	Tengger Desert Tumen section TMS5e sequence grain-size characteristics palaeoclimate reconstruction Marine Isotope Stage 5e(MIS5e)
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:4453574
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335129
作者单位	Wen Xiaohao, School of Geographical Science,South China Normal University, Guangzhou, Guangdong 510631, China.; Wang Fengnian, School of Geographical Science,South China Normal University, Guangzhou, Guangdong 510631, China.; Niu Dongfeng, School of Geographical Science,South China Normal University, Guangzhou, Guangdong 510631, China.; Si Yuejin, School of Geographical Science,South China Normal University, Guangzhou, Guangdong 510631, China.; Ou Xianjiao, School of Geographical Science,South China Normal University, Guangzhou, Guangdong 510631, China.; Li Baosheng, School of Geographical Science,South China Normal University, State Key Laboratory of Loess and Quaternary Geology, Guangzhou, Guangdong 510631, China.; Zheng Yanming, School of Geography and Planning,Sun Yat-Sen University, Guangzhou, Guangdong 510275, China.
推荐引用方式 GB/T 7714	Wen Xiaohao,Li Baosheng,Wang Fengnian,et al. Grain-size Characteristics and Climate Variability in TMS5e Sequence of Tumen Section in Southern Tengger Desert,Northwestern China[J],2012,22(1):48-62.
APA	Wen Xiaohao.,Li Baosheng.,Wang Fengnian.,Zheng Yanming.,Niu Dongfeng.,...&Ou Xianjiao.(2012).Grain-size Characteristics and Climate Variability in TMS5e Sequence of Tumen Section in Southern Tengger Desert,Northwestern China.Chinese Geographical Science,22(1),48-62.
MLA	Wen Xiaohao,et al."Grain-size Characteristics and Climate Variability in TMS5e Sequence of Tumen Section in Southern Tengger Desert,Northwestern China".Chinese Geographical Science 22.1(2012):48-62.