岩浆热变质作用数值模拟  

NUMERICAL SIMUIATION OF MAGMATIC METAMORPHISM

作　　者：单业华[1] 袁鼎[1] 李志安[2] 

机构地区：[1]中国地质大学 [2]中国科学院长沙大地构造研究所

出　　处：《中国煤田地质》1998年第2期19-22,共4页Coal Geology of China

摘　　要：建立了岩浆热变质作用的数学模型，以北京房山侵入体为例，模拟出不同区域温度场下的煤接触变质，探讨了侵入体—围岩系统的特征。其结果表明房山侵入体造成的煤接触变质范围相当有限，并且该侵入体就位应处于较高的区域温度场中，反映出中、晚侏罗世开始的区域变质作用的持续。The authors have established mathematical model of magmatic metamorphism.Taking the Fanshan intrusive body in the Western Hills of Beijing as an exaople,we simulated the history of organic maturity dueto heating by the intrusive body in differing regional temperature field.Both observed and calculated data of vi rinite reflectancy reveal spatial linitation of coal metamorphism caused by the intrusive body.During the metamorphism there should exist abnormally high temperature field in the area,which suggests the continuity of regional metamorphism taking place in middle and late Jurassic.

关 键 词：岩浆热变质 数学模型 变质煤 区域变质 煤矿床 

分 类 号：P618.110.1[天文地球—矿床学] P618.110.2[天文地球—地质学]