激发极化法在河南新县铜钼矿探查中的应用

Application of induced polarization method in Xinxian county Cu-Mo mineral exploration in Henan

新县位于东秦岭—大别山成矿带的东段,是豫东南地区的铜、钼矿化集中分布区。该区的铜、钼矿化主要与燕山期岩浆活动有关,矿床类型属于斑岩型,与区域上燕山期小型花岗岩体和花岗斑岩体关系密切。测区内铜钼矿脉主要为断裂构造控制,矿(化)体的高极化、低电阻及断裂构造的高电阻为该区重要的地球物理特征。文章讲述了利用极化率和电阻率参数对该区铜钼矿进行勘探的具体方法,对类似地区找矿有借鉴意义。

Xinxian County is located in the Eastern Qinling Mt. Dabie metallogenic belt, which is the concentrated area of copper and molybdenum mineralization in southeastern Henan. In the area, the copper and molybdenum mineralization, belonging to porphyry -type deposit, mainly occurred from the magmatic activity during Yanshanian period and has closed relationship with regionally Yanshanian small granite and granitic porphyry. In the working area, copper - molybdenum veins are mainly controlled by faults. The ore （mineralization） body with high polarization and low resistance, and faults with high resistance in this area are the important characteristics of the exploration geophysics. This paper describes the exploration method using of induced polarization and resistivity parameters of copper - molybdenum ore （mineralization） body in the area, which is good reference for the similar the prospecting area.