激发极化法在吉林安图刘生店钼矿的应用

Application of induced polarization method to Liushengdian Mo deposit of Antu,Jilin

为了在吉林东部覆盖较厚地区寻找深部隐伏矿体，在安图刘生店钼矿勘查中利用中间梯度装置激发极化法扫面，发现了极化率为1．88％～4．61％、电阻率为300—500Ω·m的高极化率低阻异常。异常体上对称四极装置激电测深结果表明：3勘查线极化体顶面埋深20～30m，底面埋深150～170m；11勘查线极化体顶面埋深为25～65m，底面埋深〉200m。经钻探工程验证，钼矿体的形态、产状、顶、底板的埋深与异常解译成果基本吻合。

In order to find deep concealed orebodies in eastern Jilin with thick covers on Earth, the induced polarization method to sweep the surface of middle gradient installment has been used in Liushengdian molybdenum ore investigation in Antu, which discovers a high polarization and low resistivity anomaly with 1.88% -4. 61% polarization and 300 -500Ω·m resistivity. The IP sounding results of symmetrical quadrupole installment on anoma-lous body show that the polarization body top surface buried depth of exploration line No. 3 is 20-30 m, bottom surface buried depth is 150 - 170 m, and the polarization body top surface buried depth of exploration line No. 11 is 25 - 65 m, bottom surface buried depth 〉 200 m. Through the confirmation of exploration engineering, the molybdenum ore body＇s shape, occurrence, buried depth of top and bottom plates are basically agreed with anomaly in-terpretation results.