音频大地电磁法在贵州石阡青阳地区锰矿中的应用  

作　　者：蒋鑫 蔡盼盼 张解成 孔凡涛 

机构地区：[1]成都理工大学地球物理学院,四川成都610000

出　　处：《科技创新与应用》2019年第8期155-157,共3页Technology Innovation and Application

基　　金：中国地质调查局项目"武陵山成矿带酉阳-天柱地区矿产地质调查"(编号:121201010000160904);国家自然科学基金项目(编号:41274078)

摘　　要：通过在贵州石阡青阳地区选择锰矿勘查程度较高、周缘含锰岩系出露较好、深部埋藏较为完整的矿区,按照200米点距布置测线开展音频大地电磁(AMT)测量工作,获取测区2.5千米深部电性结构模型。参考研究区及邻区已有地质地球物理成果及钻井等资料,遵循"大塘坡"式锰矿赋存的地层构造特征,对电性结构开展地质地球物理综合解释。大地电磁勘探成果查明了成锰槽盆的深部结构形态及含锰岩系的大致空间位置。The audiomagnetotelluric(AMT)survey is carried out by selecting the mining area with high degree of manganese exploration,good exposure of surrounding manganese-bearing rock series and relatively complete deep burial in Shiqian Qingyang area of Guizhou Province,and the survey line is arranged according to the distance of 200m points.The electrical structure model of 2.5 km deep in the survey area is obtained.Referring to the existing geological and geophysical results and drilling data in the study area and its adjacent areas,and following the stratigraphic and structural characteristics of the"Datangpo"type manganese ore,a comprehensive interpretation of the geological and geophysical structure of the electrical structure is carried out.The results of audiomagnetotelluric methodshow the deep structure of the manganese trough basin and the approximate spatial position of the manganese-bearing rock series.

关 键 词：音频大地电磁测深 锰矿 贵州石阡 大唐坡式构造 

分 类 号：P631[天文地球—地质矿产勘探]