构造变形对煤化作用进程的影响——以大别造山带北麓地区石炭纪含煤岩系为例  

The Influence of Structural Deformation on Coalification:A Case Study of Carboniferous Coal Measures in the Northern Foothills of the Dabie Orogenic Belt

作　　者：曹代勇[1] 张守仁[1] 任德贻[1] 

机构地区：[1]中国矿业大学煤炭资源教育部重点实验室,北京100083

出　　处：《地质论评》2002年第3期313-317,共5页Geological Review

基　　金：国家自然科学基金项目(编号49872067)的成果。

摘　　要：以大别造山带北麓地区石炭纪含煤岩系为研究对象,利用显微及超微分析手段,将构造煤划分为脆性变形和韧性变形两大类。结合X衍射分析方法研究结果认为,脆性变形不引起煤级的变化,而韧性变形可以促进煤的变质;温度是引起煤级升高的主导因素,定向压力是煤化作用进程的“催化剂”。On the basis of a study of Carboniferous coal measures in the northern foothills of the Dabie orogenic belt and by using the microscopic and ultramicroscopic techniques, the structural coal is subdivided into brittle-deformed coal and ductile-deformed coal. X-ray diffraction analysis indicates that brittle deformation cannot bring about the change of the coal rank, but ductile deformation can and that temperatures are the main factor for raising the coal rank and the directional pressure acts as the 'catalysis' in the process of coalification.

关 键 词：构造变形 大别造山带 石炭纪煤岩系 煤化作用 脆性变形 韧性变形 煤级 

分 类 号：P618.13[天文地球—矿床学]