摘要
大型岩体边缘是成矿条件十分有利的区域,因此探测其边缘的发育情况对矿产靶区选定工作具有重要意义。论文简要介绍了可控源音频大地电磁法(CSAMT)在西秦岭美武岩体北缘地区矿产预测的应用,结合地质、地球化学资料和岩石电阻率特征认为这次研究能够较清楚反映美武岩体北缘边界形态展布以及其同北侧早石炭纪地层间的接触关系。实践证明,可控源音频大地电磁测深法能够较准确探测岩体边界及内部隐伏断裂发育情况,确定破碎带及脉体的空间展布特征,是确定矿产远景区的有效技术手段。
The margin of large pluton is a very favorable area for metallogenic conditions. Therefore,detecting the development of the edge of pluton is of great significance for the selection of mineral target area. This paper briefly introduces the application of CSAMT in mineral prediction in the northern margin of the Meiwu pluton in West Qinling. Combined with geological,geochemical data and rock resistivity characteristics,this study can clearly reflect the boundary shape distribution of the northern margin of the pluton and its contact relationship with the Early Carboniferous strata on the north side. Practice has proved that CSAMT can accurately detect the development of pluton boundaries and internal concealed faults,determine the spatial distribution characteristics of fracture zones and veins,and is an effective technical means to determine the mineral prospects.
作者
刘诚
魏立勇
张振
李含
刘宁波
LIU Cheng;WEI Li-yong;ZHANG Zhen;LI Han;LIU Ning-bo(Xi′an Mineral Resource Survey Center of China Geological Survey,Xi′an 710100,China)
出处
《河北地质大学学报》
2020年第2期68-74,共7页
Journal of Hebei Geo University
基金
中国地质调查局“西北沿边及特殊地区地质矿产调查”项目(DD2016007901)。
