Grain-size distribution characteristics of red sandy sediments in Dongjiang River valley, southern Nanling Mountains,dur
Layer LJ3 of Linjiang sttrigraphic section in Dongjiang River valley in the south of the Nanling Mountains is a set of red sandy sediments.Measured by thermoluminescence (TL) dating, it was found to be formed in MIS2-9,500±800 yr to 19,600±1,800 yr B.P. After analysis 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 different samples are similar. (2) The values of Md, Mz,σ,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 slopes. All the three aspects reveal the Aeolian characteristics of Layer LJ3.Therefore, 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.
作 者： ShuHuan Du BaoSheng Li DongFeng Niu XiaoHao Wen FengNian Wang XianJiao Ou Yi Yang YueJun Si XinNan Zhao 作者单位： ShuHuan Du,DongFeng Niu,XiaoHao Wen,FengNian Wang,XianJiao Ou,Yi Yang,YueJun Si,XinNan Zhao(Department of Geography, South China Normal University, Guangzhou, Guangdong 510631, China)BaoSheng Li(Department of Geography, South China Normal University, Guangzhou, Guangdong 510631, China;State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an,Shaanxi 710061, China)
刊 名： 寒旱区科学（英文版） 英文刊名： SCIENCES IN COLD AND ARID REGIONS 年，卷(期)： 2009 1(5) 分类号： P5 关键词： Nanling Mountain Range Dongjiang River valley ,red sandy sediment grain-size analysis arid environment