Application of induced polarizationsounding method in exploration of the Lead-Zinc polymetallic mining area on taliabu Island, Indonesia

The Induced Polarization(IP)sounding method was employed to perform the exploration in the Lead-Zinc polymetallic mining area on Taliabu Island, Indonesia. Combined with geological features, mineralization regularity and geophysical feature of rocks, this study obtained the occurrence and scale of the Lead-Zinc polymetallic ore bodies. The results show that the orebodies of low resistance and high polarization are significantly different from the country rocks. The sounding section inversion was carried out using 2-D inversion software RES2DINV. Addition of topographic data of the section has effectively constrained the interference of wavy terrain on the shape and depth of the abnormal bodies and improved the accuracy of data processing. The sounding section was interpreted geologically based on the results of IP sounding inversion and study of physical property. The trenching and drilling in Line I was used to verify the interpretation results. The results reveal that the actual location, shape and scale of the ore bodies are well coupled with the geophysical interpretation results. IP sounding has yielded better application in the exploration of the polymetallic mining area.