CSAMT法在贵州遵义锰矿整装勘查中的运用

为了提高找矿勘查效率,查清锰矿在深部的空间位置和深部构造的发育情况,在贵州省遵义锰矿区首次开展了可控源音频大地电磁法( CSAMT法),采用V8多功能电法勘探系统,选择深溪大型锰矿床延伸部位由西向东布设了4条CSAMT剖面。通过二维反演计算,结合研究区地质特征和岩矿层物性特征,对测量的4条剖面岩矿层及构造特征进行精细的解释,为确定岩矿层在深部空间的位置提供了重要信息。通过钻探验证,其揭露的层位、构造位置和CSAMT方法解释结果吻合较好,找矿效果较为显著,CSAMT法有望作为重要手段在同类型的锰矿找矿预测中推广运用。

The application of CSAMT method to monoblock exploration in the Zunyi manganese deposit,Guizhou Province

With the purpose of meeting the increasing request for the mineral resources, the present exploration is shifting from the near surface layers to deeper horizons, commonly beyond traditional prospecting methods. To improve the efficiency of explorations, the au?thors used Controlled Source Audio?Frequency Magneto Telluric Method for the first time in this study to locate deep manganese orebody as well as its hosting structure. The V8 multifunction electrical prospecting system was applied in four CSAMT sections eastward in Shenxi, along the strike of the major manganese deposits. Interpretation of the four CSAMT sections based on a two?dimensional inver?sion method, combined with geological setting and physical properties of the ore?hosting rocks, shed light on the position of the ore?hos?ting bed, which agrees well with the results of drilling verification in encountered strata and structures. The CSAMT method thus is of the potentiality in the further exploration of similar ore deposits.