Grain-Size Distribution and Micro-Structure of Quartz in
详细信息
- 责任者：Hu Zhaoguo (Institute of Tibetan Plateau Research ; Chinese Academy of Sciences ; Beijing 100085 ; China) ; Feng Jinliang
- 刊名：Journal of Mountain Science
- 出版年：2010
- 卷期：28(4)
- 关键词：粘土 ; clay ; 石英 ; quartz ; 四川 ; Sichuan Province
- 页码：p.392-406
- 图表：8 illus., 2 tables, 65 refs.
- 分类号：1400
- issnNo：ISSN1008-2786
- isbnNo：CN51-1516/P
摘要
The authors focus on the quartz grain-size distribution and the surface micro-structure of quartz grains in the Chengdu clay, as well as in the adjacent loess from the western Sichuan Plateau, the loess from Qinling Mountains and the loess from Chinese Loess Plateau. The results indicate that the quartz grains show unimodal distribution patterns in the most of Chengdu clay, but the quartz grains show bimodal distribution patterns in some of Chengdu clay. The composition of quartz grain sizes and grain-size parameters in Chengdu clay are different with the loess from the western Sichuan Plateau and the loess from Qinling Mountains and the loess from Chinese Loess Plateau. The Chengdu clay mainly consists of silty quartz grains with well sorting. The quartz micro-structures of the Chengdu clay and the loess from Qinling Mountains and the loess from Chinese Loess Plateau are different with each other. Base on the quartz grain-size distribution and quartz micro-structure, the origin of Chengdu clay was discussed.
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