甚低频电磁法在萤石矿床勘查中的应用——以内蒙古林西俄力木台萤石矿为例  

Application of VLF-EM in Fluorite Deposit Exploration——A Case Study of Elimutai Fluorite Deposit in Linxi,Inner Mongolia

作　　者：方乙[1,2] 邹灏[1,2] 王光凯[1,2] 曹华文[1,2] 高永璋 

机构地区：[1]中国地质大学地球科学与资源学院,北京100083 [2]中国地质大学地质过程与矿产资源国家重点实验室,北京100083 [3]国星有限责任公司,北京100048

出　　处：《桂林理工大学学报》2013年第2期246-251,共6页Journal of Guilin University of Technology

基　　金：国家科技支撑项目(2011BAB04B06);国土资源地质大调查项目(1212011120187;1212010916036)

摘　　要：随着萤石矿找矿难度的加大,如何在浅覆盖区寻找、定位隐伏-半隐伏萤石矿体显得尤为迫切。以内蒙古林西俄力木台萤石矿为例,探讨了甚低频电磁法(VLF-EM)在隐伏-半隐伏萤石矿体定位预测研究中的应用。通过对该矿区甚低频数据进行Fraser滤波等技术处理,分析了矿区基本构造格局特征、异常体平面分布和产状特征,并结合矿区地质研究,圈出了7条成矿异常带。实践表明甚低频电磁法在萤石矿隐伏-半隐伏矿体定位预测研究中是可行的。In the difficulty of prospecting fluorite deposits,it is very urgent to look for a method to predict concealed / half-concealed fluorite deposits in grasslands.As a portable geophysical prospecting method,the VLFEM method is effective in looking for superficial fault zone.In this paper the application of VLF-EM in the location prediction of concealed / half-concealed fluorite deposit is introduced with the case of Elimutai fluorite in Linxi,Inner Mongolia.The horizontal distribution and occurrence of the anomalies are analysed after a series processing of the VLF-EM data using Fraser filtering and other technologies and the metallogenic belts confirmed in geological study.This study shows that the VLF-EM method is feasible in the location prediction of concealed half-concealed fluorite deposits.

关 键 词：甚低频电磁法 萤石矿 异常圈定 矿产勘查 

分 类 号：P631.325[天文地球—地质矿产勘探]