The Genetic Mechanism of Authigenic Quartz in Lower Shihezi Formation of Hanggin Banner, Northern Ordos Basin
详细信息
- 责任者：Xiao Dongsheng (China University of Geosciences ; Beijing 100083 ; China) ; Fu Qiang
- 刊名：Acta Petrologica et Mineralogica
- 出版年：2011
- 卷期：30(1)
- 关键词：石英 ; quartz ; 鄂尔多斯盆地 ; Ordos Basin
- 页码：p.113-120
- 图表：4 illus., 3 tables, 20 refs.
- 分类号：0700
- issnNo：ISSN1000-6524
- isbnNo：CN11-1966/P
摘要
According to the formation mechanism of serrated edges and the microscopic features of quartz in Lower Shihezi Formation and underlying Shanxi Formation, the authors found two corrosions and one overgrowth, with the corrosions taking place respectively before and after the overgrowth. The dissolution of feldspar is considered to be one of the main siliceous sources on the basis of the dissolution theory of feldspar and the residual structural analysis. The distribution of authigenic minerals is characterized obviously by the gradual upward decrease of quartz, the positive correlation with authigenic calcite and kaolinite,and the negative correlation with illite. Therefore, the transformation of clay minerals is considered to be another main siliceous source.
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