Rock magnetic properties of a loess-paleosol couple along an N-S transect in the Chinese Loess Plateau

被引：0

作者：

郭斌

朱日祥

白立新

FlorindoFabio

机构：

来源：

ScienceinChina(SeriesD:EarthSciences) | 2001年 / 12期

关键词：

: loess-paleosol; rock magnetism; paleoclimate;

D O I：

暂无

中图分类号：

P531 [古地理学];

学科分类号：

070903 ;

摘要：

<正>We have conducted detailed rock magnetic experiments on samples from loess unit 8 (L8) and paleosol unit 8 (S8) in Jingbian, Yichuan and Duanjiapo loess sections along an N-S transect in the Chinese Loess Plateau. Major rock magnetic results are as follows: (i) An increase of high field susceptibility (xh) in the same level of loess or paleosol from north to south is observed, suggesting an enhancement of pedogenesis. (ii) The low field susceptibility (xl) in loess unit L8 is almost the same in three sections. In contrast, the xL of paleosol unit S8 in Yichuan is highest, and the xL of Duanjiapo is lower than that in Yichuan section, suggesting that there is not correlation between the xL and the degree of pedogenesis in loess-paleosols. (iii) With the increasing of xL, both the contents of the superparamagnetic (SP) and the ferrimagnetic grains in loess-paleosol increase, however, the enhancement of magnetic susceptibility is probably dependent more on the increase of the ferrimagnetic concentration tha

引用

页码：1099 / 1109

页数：11

共 13 条

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