Grain-size distribution characteristics of red sandy sediments in Dongjiang River valley,southern Nanling Mountains,during the MIS2 stage

作     者：ShuHuan Du 1,BaoSheng Li 1,2,DongFeng Niu 1,XiaoHao Wen 1,FengNian Wang 1,XianJiao Ou 1,Yi Yang 1,YueJun Si 1,XinNan Zhao 1 1.Department of Geography,South China Normal University,Guangzhou,Guangdong 510631,China 2.State Key Laboratory of Loess and Quaternary Geology,Institute of Earth Environment,Chinese Academy of Sciences,Xi’an,Shaanxi 710061,China 

作者机构：South China Normal Univ Dept Geog Guangzhou 510631 Guangdong Peoples R China Chinese Acad Sci Inst Earth Environm State Key Lab Loess & Quaternary Geol Xian 710061 Shaanxi Peoples R China 

出 版 物：《Research in Cold and Arid Regions》 (寒旱区科学（英文版）)

年 卷 期：2009年第1卷第5期

页      面：443-447页

学科分类：09[农学] 0705[理学-地理学] 0903[农学-农业资源与环境] 

基　　金：funded by the National Natural Science Foundation of China (No 40471139) National Basic Research Program of China (No 2004CB 720206) the State Key Laboratory of Loess and Quaternary Geology,Institute of Earth Environment, Chinese Academy of Sci-ences Foundation (No SKLLQG0309) 

主　　题：Nanling Mountain Range Dongjiang River valley red sandy sediment grain-size analysis arid environment 

摘      要：Layer LJ3 of Linjiang stratigraphic section in Dongjiang River valley in the south of the Nanling Mountains is a set of red sandy *** by thermoluminescence(TL) dating,it was found to be formed in MIS2-9,500 ± 800 yr to 19,600 ± 1,800 yr *** analy-sis of the grain sizes of the 16 samples(LJ3-100 to LJ3-85) in this layer,it was discovered that(1) The contents of each grain group in dif-ferent samples are similar.(2) The values of Md,Mz,,Sk,and Kg vary from LJ3-100 to LJ3-85 in a narrow range.(3) The segments of each sample in the accumulative curves extend parallel with similar *** the three aspects reveal the Aeolian characteristics of Layer ***,it is thought that Layer LJ3 consists of red sandy sediments formed in MIS2 in the south of Nanling Mountain,which reflects the arid climate at that time.