寻找隐伏岩体的新方法:镜质体反射率法  

New method of looking for the concealed intrusion:vitrinite reflectance method

作　　者：金维浚[1] 张旗[1,2] 焦守涛[1,3] 

机构地区：[1]中国科学院地质与地球物理研究所,北京100029 [2]中国科学院地质与地球物理研究所岩石圈演化国家重点实验室,北京100029 [3]北京矿产地质研究所,北京100012

出　　处：《地球物理学进展》2015年第5期2171-2175,共5页Progress in Geophysics

基　　金：国家自然科学基金重大研究计划(91014001)资助

摘　　要：本文介绍一个利用镜质体反射率寻找隐伏岩体的方法,该方法在煤田和油气地质部门使用得非常娴熟.该方法具有简单、适用、经济、快速、低成本、高效率的特点.尤其煤田部门,已经应用镜质体反射率等值线在预测隐伏岩体方面做了许多有益的尝试,取得了良好的效果.证明该方法是行之有效的,与物探方法比较,镜质体反射率方法最大的优点是没有多解性,它只是温度场的反映.只要在局部范围检测到足够高的Ro(>3%),就可能是隐伏岩体的反映.但是,与物探方法的普适性相比,本方法有一定的局限性.因此,如果能够将该方法从煤田和石油部门应用到岩石和矿床学找矿工作中,与重磁法、电法、配合使用,可以提高寻找隐伏岩体的效果,推进深部隐伏矿床的找矿实践.This paper introduces a method to find the concealed intrusions by the vitrinite reflectance（Ro）indictor,which is the common useful method in coal and petroleum geology.The Ro method is of simple,practical,economical,fast,low cost and high efficient.In particular coal geologists have predicted many concealed intrusions by the Rocontour,and have done a lot of attempt, and achieved good results. Compared with geophysical methods,the Ro method is shown that it is no ambiguity, merely reflects the temperature field.It may indicate an existence of buried intrusion as long as the Ro more than 3%in the area is detected.However,compared with the geophysical methods,the Ro method has some limitations.Therefore the Ro method is introduced from the coal geology and petroleum geology to the petrology and mineral deposits prospecting,and is combined by the gravity and magnetic methods,electromagnetic method.It can increase the effect of looking for hidden intrusions,and improve the deep ore deposits practice.

关 键 词：镜质体反射率 物探 隐伏岩体 温度场 

分 类 号：P631[天文地球—地质矿产勘探]