Origin of illites in the Luochuan loess section - Evidence from TEM study

被引：10
|
作者：
Ji, JF [1 ]
Chen, J
Lu, HY
机构：
[1] Nanjing Univ, Dept Earth Sci, State Key Lab Mineral Deposit Res, Nanjing 210093, Peoples R China
[2] Chinese Acad Sci, Xian Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
来源：
CHINESE SCIENCE BULLETIN | 1999年 / 44卷 / 04期
关键词：
loess; illite; origin;
D O I：
10.1007/BF02885495
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Morphology and composition of illite from the Luochuan loess section were investigated by TEM. The results show that most of the illite grains are characterized by rounded shapes and chemical compositions are closely similar to those of anchizonal illites. The enrichment of illites in paleosol over loess was mainly caused by the weak winter monsoon during the interglacial periods, and was not related to the in situ pedogenesis. Illite can serve as an indicator for tracing eolian dust from Loess Plateau in pelagic and lacustrine sediments.
引用
收藏
页码：372 / 375
页数：4
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