综合物探在黔西北猪拱塘地区铅锌矿找矿中的应用

    Application of comprehensive geophysical prospecting in lead-zinc prospecting in Zhugongtang Area, Northwest Guizhou

    • 摘要: 猪拱塘地区位于黔西北铅锌矿集区,地质构造复杂,找矿前景巨大,受地形和勘查技术方法限制,研究程度较低,严重制约了铅锌矿勘查工作。为查明猪拱塘地区铅锌矿成矿环境,预测成矿有利地段,在研究区开展了激发极化法和可控源音频大地电磁测量(CSAMT),圈定了激电异常,查明了深部地层结构和控矿断裂发育情况,结合区域地质资料和岩矿石物性特征,分析了综合物探异常特征,指导了钻探工程部署,发现了隐伏铅锌矿体。最后总结了猪拱塘地区铅锌矿体具有典型的高极化率、低电阻率的特点,不同倾向断裂的交叉复合部位是铅锌矿赋存有利位置。本文为黔西北地区铅锌矿勘查工作提供了参考依据和经验积累。

       

      Abstract: Zhugongtang Area is located in the lead-zinc ore concentration area in Northwest Guizhou, with complex geological structure and great prospecting, which is limited by topography and exploration technology and low research degree seriously restricts the lead-zinc ore exploration work. Induced polarization method and controllable source audio frequency magnetotelluric survey(CSAMT) are carried out in the study area in order to find out the favorable metallogenic area of lead-zinc mineralization prediction in Zhugongtang Area. The induced polarization anomaly is delineated, the deep stratigraphic structure and the development of ore-controlling faults are found out, and the comprehensive geophysical anomaly characteristics are combined with regional geological data and physical properties of rocks and ores to guide the deployment of drilling projects and discover concealed lead-zinc ore bodies Finally, it is concluded that the lead-zinc ore body in Zhugongtang Area has the typical characteristics of high polarizability and low resistivity, and the cross-compound position of faults with different dips is the favorable location for the occurrence of lead-zinc ore. This paper provides reference basis and accumulation for the exploration of lead-zinc deposits in Northwest Guizhou.

       

    /

    返回文章
    返回