The shallow resources of lead-zinc deposits are gradually decreasing in eastern Bangpu of Tibet, and hence deep and side exploration is imperative. The authors used CSAMT to carry out deep exploration and make prospecting prediction of lead-zinc deposits in the Bangpu-Digei mining area. The geophysical profiles were deployed in accordance with the 100 m×40 m survey network, and 373 physical points were determined. CSAMT data processing was conducted for the magnetic field intensity so as to calculate the full-region apparent resistivity and obtain the full-region apparent resistivity data at 42 840 sites. Then, the CSAMT anomaly map of full-region apparent resistivity in the exploration area were compiled, and four abnormal areas of electrical conductivity were delineated, i.e., high resistivity abnormal areas R1, R2, R3 and low resistivity abnormal areas R4. Combined with previous exploration data, the authors carried out geological interpretation of CSAMT data and established corresponding prospecting prediction model. The further drilling verification results prove the reliability of CSAMT prediction results.
陈小龙, 高坡, 程顺达, 王晓青, 罗可. 西藏帮浦东段—笛给铅锌矿区CSAMT异常特征与深部找矿预测[J]. 物探与化探, 2021, 45(2): 361-368.
CHEN Xiao-Long, GAO Po, CHENG Shun-Da, WANG Xiao-Qing, LUO Ke. A study of anomaly characteristics of CSAMT and deep prospecting prediction of the lead-zinc deposits in eastern Bangpu-Digei mining area of Tibet. Geophysical and Geochemical Exploration, 2021, 45(2): 361-368.
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