胶东牟平发云夼金矿区地球物理综合找矿研究

发云夼金矿产于中生代胶莱盆地东北边缘,金矿体产于盆地边缘次级滑动断层带中,是一层间滑动角砾岩型金矿床.金矿区开展的伽玛能谱测量结果表明,该类型金矿化具有明显的K/U参数异常,反映了中低温矿化的特点,根据地表圈定的异常确定了发云夼金矿隐伏矿化的相对部位,在此基础上进行了CSAMT技术研究,确定了隐伏金矿体在地下的具体部位,展示了发云夼金矿良好的成矿前景.目前,牟平金矿已在相应的CSAMT异常部位探到金矿体.图3,参7.

Comprehensive geophysical exploration ore study in Fayunkuang gold ore area, Muping, eastern Shandong province

Fayunkuang gold deposit occurs in second sliding fault zone at the northeast margin of the Mesozoic Jiaolai basin, it is a interlayer-sliding breccia type gold deposit. The results of gamma spectrum survey in Fayunkuang gold ore area show that this type of gold deposit has clearly positive gamma spectrum K/U parameter anomaly which indicate gold deposit has feature of middle-low temperature mineralized alteration. According to the anomaly area of gamma spectrum survey, we defined the roughly position of the concealed gold orebody. We developed CSAMT method basing on gamma spectrum survey, and then decided the concealed gold orebody position in depths. The results of gamma spectrum and CSAMT measurements in the deposit area show that Fayunkuang gold deposit has a good metallogenic prospects. At present, Muping gold mine has mined the gold orebody at the corresponding CSAMT anomaly position.3figs.,7refs.