磁法勘探在浙东南火山岩区的应用

浙东南火山岩地区的金属矿床与火山构造和隐伏岩体关系密切。笔者近年来在该地区开展了不少磁法工作,在圈定火山构造、隐伏岩体、划分断裂构造等方面取得较好效果,并结合地质资料指出了成矿有利的靶区。后续地质工作在多个靶区发现大量土壤异常,有力推进了区内矿产地质工作。认为在浙东南火山岩地区开展地质勘查时,可通过面积性磁法工作快速缩小找矿靶区,减少勘查风险,提高矿产地质工作效果。

Application of magnetic prospecting methods in volcano rock region of southeastern Zhejiang

The metal deposits in volcanic rock region of southeastern Zhejiang are closely related to the volca-nic structures and concealed rock bodies.In recent years,a lot of magnetic prospecting works are conducted in this area and prove to be effective for the delineation of volcano structures and concealed rock bodies and the division of fracture structures.Combined with the historical geological documents,the magnetic prospecting works point out the target areas of mineralization.Follow-up geological works find a large amount of soil anomalies in several target areas,and the anomalies effectively promote the development of geological works in this area.The author believed that in the volcanic rock region of southeastern Zhejiang,areal magnetic prospecting was an effective geological exploration method to quickly narrow down target areas for prospecting and to reduce exploration risks and to improve the performance of works of mineral resources and geology.