天然源音频大地电磁测深在四川雅江某矿区寻找隐伏伟晶岩体中的应用

Application of natural source audio magnetotelluric sounding in a mining area of Yajiang, Sichuan Province in the search for concealed pegmatite

由于构造形成过程中不同性质基岩、不同岩性物质的填充,会存在不同电性差异,因此利用音频大地电磁测深法发现、研究这些电异常,并进行一定数据处理和分析,总结构造地质体的电性特征,提高成果解译水平,将电法应用于寻找隐伏矿体具有非常重要的意义。本文以雅江某矿区天然源音频大地电磁测深为例,运用反演处理,结合地质资料综合分析。得出高山地区隐伏伟晶岩体的电性特征,以此进行推广应用。

Due to the filling of bedrock and lithologic materials with different properties in the process of tectonic formation,there will be different electrical differences.Therefore,it is of great significance to use audio magnetotelluric sounding method to find and study these electrical anomalies,to process and analyze certain data,to summarize the electrical characteristics of tectonic geological bodies,to improve the interpretation level of results,and to apply electric method to find hidden ore bodies.This paper takes the natural source audio magnetotelluric sounding in a mining area of Yajiang as an example,using inversion and comprehensive analysis of geological data.The electrical characteristics of concealed pegmatite in alpine area are obtained,which is popularized and applied.