综合电法勘探在西秦岭寨上金矿的应用研究  

Application of the Integrated Electrical Method to Exploration in the Zhaishang Gold Deposit,West Qinling

作　　者：刘诚 孙彪 魏立勇 李含 孟菲榕 董风 LIU Cheng;SUN Biao;WEI Liyong;LI Han;MENG Feirong;DONG Feng(Xi an Center of Mineral Resources Survey,China Geological Survey,Xi an,Shaanxi 710100)

机构地区：[1]中国地质调查局西安矿产资源调查中心,陕西西安710100

出　　处：《地质与勘探》2020年第6期1226-1237,共12页Geology and Exploration

基　　金：中国地质调查局项目“甘肃寨上金矿岩金普查”(编号:DD20191018)资助。

摘　　要：寨上金矿处于西秦岭岷-礼成矿带西端,是我国重要的卡林-类卡林型金矿床。以查明寨上金矿深部地质结构,确定找矿方向,总结成矿规律为目的,梳理近年来开展过的激发极化法、连续电导率剖面测量(EH4)、可控源音频大地电磁测量等地球物理勘探方法,通过与已知钻孔剖面的对比研究,基本查明了寨上金矿深部地质结构电性分布特征以及适用于西秦岭同类型矿床的物探综合电法找矿标志。此外基于地球物理成果,对研究区成矿机制及动力学模型进行梳理,为下一步指导深部勘查奠定了基础。The Zhaishang gold deposit,an important large carlin and carlin-like type gold deposit in China,lies in the western end of the Minli metallogenic belt,West Qinling.The purpose of this work is to clarify the deep geological structure of the Zhaishang deposit,determine the ore prospecting direction and summarize the mineralization rule.In recent years,various electric methods such as TDIP,EH4,and CSAMT measurement have been applied to exploration in this area.By comparing with the known borehole profiles,the characteristics of electrical distribution of deep geological structure beneath the deposit and the geophysical prospecting criteria for the same type of deposits in West Qinling are determined.In addition,based on geophysical results,the metallogenic mechanism and dynamic model of the study area are summarized,which has laid a foundation for further guidance of deep exploration.

关 键 词：时间域激发极化法 可控源音频大地电磁 物探方法组合 成矿机制 寨上金矿 西秦岭 

分 类 号：P631[天文地球—地质矿产勘探]