内蒙古自治区煤变质作用类型的区域分析

从区域资料入手，用内蒙古自治区不同时代煤变质程度的差异、煤变质程度的时间界线与岩浆活动时期、煤变质带与燕山期花岗岩体分布带的关系、煤变质程度与煤到岩体距离的关系以及已知岩浆热变质矿区煤变质作用的实际资料，论证了内蒙古自治区煤变质作用类型属区域岩浆热变质。

Regional Analysis of the Metamorphic type of Coal in Inner Mongolia Autonomous Region

Begining with regional data,the writer studies the difference of the metamorphic de-gree of coal with different agesin Inner Mongolia Autonomous Region, the relationship between the boundary line oftime of the metamorphic degree of coal and magmatic activity periods and between the metamorphic zone of coal and the distribution zone of the granite body of YanShan period, herelationship between coal metamorphic degree and the distance from coal to rock body,as well as the practical data of coal metamorphism in the mining area of magmatic thermometamorphism. On the basis of the above work, it is determined that the metamorphic type of coal in Inner Mongolia Autonomuos Region is regional magmatic thermometamorphism.