内蒙嘎达坂铅锌多金属矿区综合物探找矿研究

根据内蒙嘎达坂矿区的研究成果,研究了物探方法组合所解决的地质问题,探讨了其在靶区优选和成矿定位预测方面的作用。研究认为,具备低阻、高极化、相对高磁与地表蚀变套合一体是矿区矿(化)体存在的组合特征,其中断裂及异常带交汇部位的异常组合是重点靶区。对于含有磁黄铁矿等浸染状硫化物矿床而言,面积性激电、高磁工作相结合对研究区域构造格局、断裂构造展布及局部成矿异常带圈定,继而进行浅地表矿体定位有指导意义;激电测深、音频大地电磁法有机组合,辅以精测阶段频谱激电多参数相补充,是实现由浅及深、由已知到未知进行深部找矿的基本思路。

Research on the integrated geophysical prospecting of polymetallic Pb-Zn deposit in Gadaban area

Based on the results of research in Gadaban area in Inner Mongolia this paper deals with the geological issues. The results indicated that the mineralized body is characterized by well fitting of surface alteration with low resistivity, high magnetics, high polarizability anomlies. Intersections of the fit area and fault are the key targets. For the disseminated sulfide deposit containing pyrrhotite, etc, the combination of areal IP survey and high magnetic delineation could directly guide study on the regional tectonic framework and fracture distribution and location of shallow ore bodies. The combination of IP sounding, AMT, and SIP is the fundamental method to solve problems of deep geology and ore searching from shallow to deep and from known to unknown.