论文部分内容阅读
我国煤炭资源丰富,分布广泛,成煤期多並以多煤层沉积为特点。因此,加强煤中微量元素的找矿及成矿规律的研究,无论对煤的综合利用和提高成煤理论以指导今后找煤及煤田地质勘探工作,都具有理论和实践意义。煤中微量元素的研究任务是:(1)搞清煤中所含伴生元素的种类、含量及其变化规律,为综合利用提供依据。同时,了解煤中伴生元素的成矿条件及赋存特征。(2)通过对煤中微量元素的迁移、富集和沉积条件的研究,为恢复成煤期古地理环境提供这方面的佐证。(3)通过研究微量元素和矿物的种类、数量在时间和空间上的变化规律,为煤层对比提供依据。
China is rich in coal resources and is widely distributed. It has many coal-forming stages and is characterized by multiple coal deposits. Therefore, it is of theoretical and practical significance to strengthen the prospecting and mineralization regulation of trace elements in coal, no matter the comprehensive utilization of coal and coal formation theory to guide the future coal prospecting and coalfield geological exploration work. The research tasks of trace elements in coal are as follows: (1) To find out the types, contents and changing rules of the accompanying elements contained in coal and provide basis for comprehensive utilization. At the same time, understand the mineralization conditions and occurrence characteristics of accompanying elements in coal. (2) Through the study of the trace elements migration, enrichment and deposition in coal, this paper provides evidence for the restoration of palaeogeomorphic environment during coal formation. (3) Through the study of the changes of the types and quantities of trace elements and minerals in time and space, it provides the basis for the comparison of coal seams.