综合物探方法在鄂东南龙角山—付家山矿区及外围深部找矿中的应用

Application of Integrated Geophysical Methods in Deep Prospectingin Longjiaoshan-Fujiashan Mining Area and Its Periphery,Southeastern Hubei

鄂东南矿集区龙角山—付家山铜钼钨矿床是一个典型的矽卡岩型矿床,矿区深部及外围还有进一步找矿潜力。为了查明与成矿有关的龙角山、付家山花岗闪长斑岩体在深部的范围和形态,获取含矿地质体与物探异常的对应关系,使用综合物探方法开展研究,重点对研究区重力、磁法及可控源音频大地电磁法(CSAMT)数据进行精细处理和反演。物探成果显示龙角山岩体与付家山岩体在深部连为一体,整体呈NNE向展布,岩体西缘向西陡倾,而东缘向东缓倾。在付家山岩体北西缘、南东缘和龙角山岩体南缘优选找矿靶区3处,可指导下一步地质找矿工作。

Longjiaoshan-Fujiashan Cu-Mo-W deposit is a typical skarn deposit with further prospecting potential in its depth and periphery in southeastern Hubei Province.Integrated geophysical methods are used to carry out the research,focusing on the precise inversion of gravity,magnetic method and CSAMT data in the study area,in order to find out the deep range and shape of Longjiaoshan and Fujiashan granodiorite porphyry related to mineralization,and obtain the corresponding relationship between ore-bearing geological bodies and geophysical anomalies.The results of geophysical exploration show that Longjiaoshan rock mass and Fujiashan rock mass are deeply connected as a whole,which are distributed in NNE direction.The western edge of the rock mass incline steeply to the west,while the eastern edge incline gently to the east.Three prospecting target areas are delineated in the northwestern margin,southeastern margin of Fujiashan rock mass and the southern margin of Longjiaoshan rock mass,which can guide the next geological prospecting work.