摘要
中深层隐伏铅锌矿由于其埋藏深度大,地表没有矿点出露,以及往往与含炭质高的围岩伴生,所以找矿难度大。综合运用音频大地电磁测深法(AMT)和相干激电在秦岭地区探测铅锌矿,取得了理想效果。相干激电法可以区分炭质异常和金属硫化物矿所产生的矿异常,AMT法可以用来查明断裂的展布特征、电性分层和低阻异常体的空间分布。
It is difficult to find concealed lead-zinc deposits buried at middle-great depth. Electrical anomalies resulting from Zn-Pb deposits and those from carbonaceous strata can be detected by using AMT and Coherent IP. The relative phase parameters of the coherent IP can distinguish anomalies caused by Zn-Pb deposits from those caused by carbonaceous strata. AMT can be used to detect the distribution of faults, the electric layering and the spatial distribution of low-resistivity anomalous bodies.
出处
《物探与化探》
CAS
CSCD
2007年第4期320-322,共3页
Geophysical and Geochemical Exploration
关键词
AMT法
相干激电法
隐伏铅锌矿
integrated geophysical method
AMT method
Coherent IP
concealed Pb-Zn deposit
