• 责任者：Wang Shuili (College of Geology and Environment ; Xi’an University of Science and Technology ; Xi’an 710054 ; China) ; Liang Shaoxian
• 刊名：Coal Geology & Exploration
• 出版年：2011
• 卷期：39(6)
• 关键词：煤系 ; coal measures ; 粘土岩 ; claystone ; 山西 ; Shanxi Province
• 页码：p.6-10,15
• 图表：3 illus., 6 tables, 14 refs.
• 分类号：0803
• 出版序号：20122354
• issnNo：ISSN1001-1986
• isbnNo：CN61-1155/P

///The contents of the major and trace elements in 3 samples of the claystone with different types and textures, from the coal measures of the Taiyuan and Shanxi formations of Permo-Carboniferous of Xiaoyu coal mine of Datong, Shanxi Province, are detected by the methods of chemical analysis and INAA respectively. By the con-trast analysis of the elements with geochemical tracer and their ratio, three samples  could be formed in situ from the alteration of acidic or alkali-acidic ash under the conditions of the shallower water and weak oxydation on the surface. The environments, medium conditions and original matter and its size at the ash alteration, as well as the clay minerals of the clay rocks are the major reason of the differences on the types and element contents of the claystones.