高频大地电磁测深与激电中梯在金矿勘查中的应用研究  

Application of high frequency magnetotelluric sounding and IP intermediate gradient method in gold deposit exploration

作　　者：张绍栋 吕志斌 雷延祥 王亮 杨杰 ZHANG Shaodong;LV Zhibin;LEI Yanxiang;WANG Liang;YANG Jie(Bureau of Geological Exploration&Development of Qinghai Province,Xining 810000;Institute of Geological Exploration&Development of Qinghai Chaidamu,Golmud 816000)

机构地区：[1]青海省地质矿产勘查开发局,西宁810000 [2]青海省柴达木综合地质矿产勘查院,格尔木816000

出　　处：《矿产勘查》2020年第4期746-750,共5页Mineral Exploration

摘　　要：以青海某矿区开展的金矿勘查为例,研究和分析高频大地电磁测深法与激电中梯法相结合的方法在金矿勘查中的可行性与应用效果。研究表明,前期通过激电中梯法可以基本确定构造蚀变带及矿化体的位置及矿化信息,并进行横向追踪。后期高频大地电磁法可圈定蚀变带位置、倾向及延伸,两者结合可提高工作效率,减少预查区勘探成本。在构造破碎带型金多金属矿勘查中有着很好的应用效果。Taking the gold exploration carried out in a mining area of Qinghai Province as an example,the feasibility and application effect of the combination of high frequency magnetotelluric sounding method and IP intermediate gradient method in gold exploration are studied and analyzed. The application study shows that in the early stage,the location and mineralization information of structural alteration zone and mineralized body can be basically determined by IP intermediate gradient method,and the horizontal tracking can be carried out. In the later stage,high frequency magnetotelluric method can delineate the location,tendency and extension of the alteration zone. The combination of the two methods can improve the work efficiency and reduce the exploration cost of the pre checked area. It has a good application effect in the exploration of structural fracture zone type gold polymetallic ore.

关 键 词：金矿 高频大地电磁法 激电中梯法 构造破碎蚀变带 

分 类 号：P631[天文地球—地质矿产勘探]