激发极化法在黑龙江老新兴—三间房岩金矿区的应用

Application of induced polarization technique in the Laoxinxing-Sanjianfang gold deposit area, Heilongjiang

从目前国内外的勘探技术看,根据金矿床的特点,物探方法主要用于圈定成矿构造及矿化蚀变带。利用大功率激电测深法,在黑龙江老新兴—三间房矿区获得了大量岩、矿石的视电阻率和视充电率参数。利用视充电率,圈定矿区金属离子富集区、金属硫化物、石墨化地层等激发极化体的空间部位,并在矿区相对高的极化率异常区域,确定了深部高极化特征的脉体。

From the global exploration view, geophysical exploration techniques are mainly used for the delineation of ore - forming structures and mineralized alteration zones according to the characteristics of gold deposits. In this study, a large amounts of apparent resistivity and apparent chargeability data of rocks and ore were collected in the gold deposit area by applying high power of electrical sounding method. According to the apparent chargeability distribution, the spatial locations of induced geo - objects such as metal ions - rich area, metal sulfides and graphitized strata etc. were outlined in those areas with relatively high polarization rate, where the deep vein type geo - object with high polarization characteristics probably occurs in the deposit area.