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

被引：0
|
作者：
Chen Jun
Ji Junfeng
Qiu Gang
Lu Huayu
机构：
[1] Nanjing University,Department of Earth Sciences
[2] Chinese Academy of Sciences,Xi'an Laboratory of Loess and Quaternary Geology
来源：
Science in China Series D: Earth Sciences | 1998年 / 41卷 / 3期
关键词：
loess; paleosol; chemical weathering; element geochemistry;
D O I：
10.1007/BF02973110
中图分类号：
学科分类号：
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 I.oess 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.
引用
收藏
页码：235 / 241
页数：6
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