• 责任者：Li Chang’an (State Key Laboratory of Biogeology and Environmental Geology ; China University of Geosciences ; Wuhan 430074 ; China) ; Zhang Yufen
• 刊名：Earth Science
• 出版年：2013
• 卷期：38(5)
• 关键词：黄土 ; loess ; 元素地球化学 ; elements geochemistry ; 巫山 ; Wushan Mountains
• 页码：p.916-922
• 图表：3 illus., 2 tables, 27 refs.
• 分类号：1400
• issnNo：ISSN1000-2383
• isbnNo：CN42-1233/P

     In this paper,we present the major element compositions of the＂Wushan loess＂,measured by X-ray fluorescence spectrometer.The content of major elements SiO2,Al2 O3,TFe2 O3,Fe2 O3 and TiO2 varies with the content of clay in the profile.Besides the content of these elements displays several obvious circles and could be indicators of climate when the＂Wushan loess＂deposited.The elements of Si,Al,Fe,K,Mn and Ti show similarity and positive correlation during the weathering process while they are different from Ca and P,with negative correlation.The results reveal that grain size compositions of the sediments could dominate the content of some major elements.Major elements such as Al,Fe and Ti are concentrated in the clay fraction between 0.8and 2.0μm instead of the coarse silt and very fine sand fractions（40-100μm）.The UCC-normalized patterns of the＂Wushan loess＂are almost flat indicating the aeolian origin.