激电法在贵州大厂锑矿勘查中的应用

Application of induced polarization method in antimony ore exploration of Dachang in Guizhou

简要介绍了激电法基本理论、工作方法以及贵州大厂锑矿区的地质和地球物理特征,重点讨论了激电法在锑矿勘查中的应用效果。通过对激电中梯及激电测深异常综合分析,得到了测区岩层电性变化特征,划分出峨嵋山玄武岩层与龙潭组砂页岩层之间的地层界线,推断了研究区的构造,圈出了含矿有利部位。经与钻孔资料对比,解释推断与钻孔资料基本吻合,说明激电法勘查锑矿具有良好的找矿效果。

This paper briefly introduced the basic theory and working methods of induced od, and the geological and geophysical characteristics of Dachang antimony ore area in Guizliou. The applicationeffect of IPmethod in antimony ore exploration was mainly discussed. Thsearch on anomaly of IP intermediate gradient and IP sounding, the authors attained the spistics of strata resistivity in the study area. Then the strata boundary betw^een the Msandstone was identified. The structure of tlie study area was deduced and the ore bearing favorable position wascircled. Comparing with the drilling data, the authors found that tlie geophysicawere basically consistent, which indicated that IP has good antimony ore prospecting results （IP）.