A magnetic investigation along a NW-SE transect of the Chinese loess plateau and its implications

被引：23
|
作者：
Zhu, R
Deng, C
Jackson, MJ
机构：
[1] Chinese Acad Sci, Inst Geol & Geophys, Beijing 100101, Peoples R China
[2] Univ Minnesota, Inst Rock Magnetism, Minneapolis, MN 55455 USA
来源：
PHYSICS AND CHEMISTRY OF THE EARTH PART A-SOLID EARTH AND GEODESY | 2001年 / 26卷 / 11-12期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1016/S1464-1895(01)00134-X
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
An investigation of rock magnetic properties using the temperature-dependence of susceptibility (TDS) and Xray diffraction (XRD) analyses was conducted on specimens of the last glacial loess (LI) and the last interglacial soil (SI) along a NW-SE transect of the loess plateau in China Parallel subsamples were used for different heating/cooling runs in an argon atmosphere to detail the TDS characteristics. Also, "thermal pre-treatment" was carried out for investigating magnetic mineral changes under oxidizing conditions, We find that the TDS behavior in the temperature interval of 250-500 degreesC is useful in identifying the pedogenic maghemitized magnetite in both loess and paleosol, and that it can be used as a proxy of the degree of pedogenesis, which is closely linked to climatic conditions. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：867 / 872
页数：6
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