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

被引：0
|
作者：
陈骏
季峻峰
仇纲
鹿化煜
机构：
来源：
Science China Earth Sciences | 1998年 / 03期
关键词：
loess; paleosol; chemical weathering; element geochemistry;
D O I：
暂无
中图分类号：
P596 [区域地球化学、景观地球化学];
学科分类号：
070902 ;
摘要：
Major and trace element analyses of the Luochuan loess paleosol sequence in China were performed in order to understand the chemical weathering processes occurring on the Loess Plateau during the last 600 ka. Results reveal that most elements in the loess remain immobile during 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. Loess 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 be indicators for the dry cold climate dominated on the Loess Plateau during the Quaternary.
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收藏
页码：235 / 241
页数：7
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