【摘要】 本文对研究变质作用对,常用的地温测量方法石榴石-黑云母共生矿物对,结合五台山地区的应用对各种计算公式进行了分析比较,提出在使用中特别应注意变质岩石的矿物共生组合以及其现有实验数据的结合,这样才能使计算的变质温度与自然界相吻合。各种方法的比较认为,的计算方法和图解适合于中-高温的变质作用过程。并对出现的误差做了分析,认为化学分析精度的影响最大,特别是FeO的含量.更多还原

【Abstract】 This paper discusses methods of using· coexisting grane-biotite mineral pairs to estimate conditions of metamorphism of rocks.We have analysed various calating equations by combining with the geological environment in Wutai Mountain area. In order to correlate the estimated results with natural conditions, we propose here a method which combines coexisting mineral pair with the experimental data to study P-T condititon of metamorpohism.According to our analyses, we suppose that the calculating equation and diagram proposed by（1981） can be used to estimate metamorphic conditions of medium-high temperature. The key factor influencing upon the estimated results is the accuracy of chemical analyses, particularly, the Fe²⁺ content of minerals.更多还原