Geochemical studies on the intensity of chemical weathering in Luochuan loess-paleosol sequence, China

作     者：陈骏 季峻峰 仇纲 鹿化煜 

作者机构：Department of Earth Sciences Nanjing University Nanjing China Xi'an Laboratory of Loess and Quaternary Geology Chinese Academy of Sciences Xi'an China 

出 版 物：《Science China Earth Sciences》 (中国科学（地球科学英文版）)

年 卷 期：1998年第41卷第3期

页      面：235-241页

核心收录：

学科分类：070902[理学-地球化学] 0709[理学-地质学] 07[理学] 

基　　金：ProjectsupportedbytheNationalNaturalScienceFoundationofChina 

主　　题：loess paleosol chemical weathering element geochemistry 

摘      要：Major and trace element analyses of the Luochuan loess-paleosol sequence in China were performed in order to understand the cheniical weathering processes occurring on the *** Plateau during the last 600 ka. Results reveal that most elements in the loess remain immobile durlng chemical weathering. The typical stable elements are Al, K, Ti, Rb and REE, while the main mobile elements are Ca, Sr, P, Mg and Na. 120ess and paleosol experience the incipient stage of chemical weathering characterized by acid leaching and carbonate dissolution. Alteration of silicates in the sequence seems to be limited. Features of less chemical weathering of the loess and paleosol could he indicators for the dry-cold clinlate dominated on the Loess Plateau during the Quaternary.