多参数分析在孟公界铀矿床探测中的应用研究

The Appication of Induced Polarization Method to Uranium Exploration in Menggongjie Region

孟公界铀矿床与韧-脆性剪切带密切相关,铀矿化通常伴有赤铁矿化、黄铁矿化,矿化岩石与围岩间存在明显的物性差异。在测区布设激电观测剖面并利用半衰时、视极化率、视电阻率异常的分布准确地推断出隐伏铀矿(化)体的空间位置与赋存状态,钻孔揭露表明激发极化法在孟公界铀矿探测效果显著。

Menggongjie uranium deposit is closely related to the ductile-brittle shear zone and the mineral- ization is associated with hematitization and pyritization. The mineralized rocks is obvious different from wall rock in physical properties. Six geophysical profiles are implemented with half-decay time, apparenl polarizability and apparent resistivity parameter and one concealed uranium mineralization body was iden tiffed which was validated by the drilling data. The study indicated that the polarization method was effi- cient in uranium exploration in Menggongjie region.