贵州万人洞金矿电性特征及金矿找矿规律研究

Research of electrical characteristics and prospecting rules of gold deposit in Wanrendong area of Guizhou Province

为探索万人洞金矿与物探电性特征之间的规律,拓宽万人洞金矿找矿思路,通过介绍万人洞金矿区地质、物性特征及可控源音频大地电磁测深法(controlled source audio magnetotelluric method,CSAMT)工作原理,利用CSAMT及物性测量方法,对万人洞金矿区电性结构特征进行综合研究,查明了研究区与金矿相关的地质体、构造、矿化蚀变等空间分布特征,总结出金矿物探找矿规律金矿产出部位位于物探低阻异常带,或高、低阻过渡渐变带上,经后期钻孔验证,方法有效可靠。研究成果为万人洞金矿区或相关矿区金矿找矿提供物探方案。

In order to explore the regularity between Wanrendong gold deposit and geophysical electrical characteristics and expand thoughts for Wanrendong gold deposit prospecting,the authors comprehensively investigated the electrical structural characteristics of Wanrendong gold mine area,through the introduction of geological and physical characteristics of Wanrendong gold deposit,as well as the CSAMT(controlled source audio magnetotelluric method)basic theory and the transitivity measurement work.The spatial distribution characteristics of gold deposit-related geologic body,structure,and alteration was identified,and the prospecting geophysical rules of gold deposit were summarized in this paper.The gold deposit was mostly distributed in the geophysical low resistance anomaly areas,or transition areas between high resistance and low resistance.This method proved to be effective and dependable after later borehole certification.These achievements could provide geophysical exploration method of gold-prospecting for Wamrendong gold deposit area or similar areas.