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The Geochemistry Characteristic of Weeathering Crust in the Three Gorge Areas —— The Example of CaoTang river drainage area in the Three Gorge Areas

CHEN Ke-feng, YANG Da-yuan, JIANG Hong-tao, ZHOU Bin, XU Yong-hui, LIU qing-you, DONG jie (Department of Urban and Resource Sciences, NanJing University, Nanjing, JS 210093, China)  
Slope substance will become one of the main sources of mud and sand in the three gorges areas after the three gorges reservior being built. It is very important to study the geochemistry characteristic of weathering crust in these areas for the preserve ,management and using of water and soil. It is shown that there are obvious differences in the weathering intensity of the different slope segment with the same depth, and the intensity is descending in sequence from the gentle slope to the incline and further to the stiff slope by analyzing the geochemistry characteristic of ordinary elements, clay mineral and susceptibility. While there are small differences in the geochemistry characteristic of surface layer and some depth segments in the same slope.It is shown that the soil is young and the forming soil action is weak.
【Fund】: 国家自然科学基金项目“长江三峡库区地貌发育过程”资助(40 72 1 2 6)
【CateGory Index】: P59
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