CAJ | 학술논문

通过对广山―江藻锌多金属矿区大比例尺地质矿产填图、土壤地球化学测量、高精度磁测以及可控源音频大地电磁测深等,了解矿区含矿构造蚀变带分布、地球化学元素组合特征及深部控矿断裂的延伸情况。矿区土壤发育 Zn、Cu、Pb、Ag、As、Sb、W、Sn、Bi 等组合异常,异常强且套合好；地磁场基本为平缓正值场区,花岗岩与碳酸盐岩地层接触交代矽卡岩矿化蚀变带磁性总体不强,一般为40~80nT,构成 NE 向条带,但局部含矿地段显示为较强正磁异常；CSAMT 测量较好地反映深部构造特征,显示在矽卡岩蚀变带深部-500~-1000m 存在 NE 向低阻断裂带及近直立长条状低阻体。土壤地球化学、高精度磁法测量及 CSAMT 测量综合应用较好地圈定了矿区找矿地段,为下一步验证提供参考。
통과대엄산―강조자다금속광구대비례척지질광산전도、토양지구화학측량、고정도자측이급가공원음빈대지전자측심등,료해광구함광구조식변대분포、지구화학원소조합특정급심부공광단렬적연신정황。광구토양발육 Zn、Cu、Pb、Ag、As、Sb、W、Sn、Bi 등조합이상,이상강차투합호；지자장기본위평완정치장구,화강암여탄산염암지층접촉교대석잡암광화식변대자성총체불강,일반위40~80nT,구성 NE 향조대,단국부함광지단현시위교강정자이상；CSAMT 측량교호지반영심부구조특정,현시재석잡암식변대심부-500~-1000m 존재 NE 향저조단렬대급근직립장조상저조체。토양지구화학、고정도자법측량급 CSAMT 측량종합응용교호지권정료광구조광지단,위하일보험증제공삼고。
After a series of works such as large scale geology and mineral resource mapping,pedogeochemical survey, high precision magnetic measurement and controlled-source audio frequency magnetotelluric (CSAMT)measurement in Guangshan-Jiangzao zinc polymetallic mining area,the author ascertains the dis-tribution of ore-bearing structural alteration zones,combined characteristics of geochemical elements and ex-tension of deep ore-controlling fractures.Composite anomalies of Zn,Cu,Pb,Ag,As,Sb,W,Sn and Bi develop in the soils of the mining area,and the anomalies are strong and coincide with each other.The geo-magnetic field is basically a flat positive magnetic field area,the magnetism of skarn mineralized alteration zone contacted and alternated by granite and carbonatite is not strong,ranging from 40 to 80nT,and forms a NE-trending belt,where in parts ore-bearing sections show relatively strong positive magnetic anomalies. CSAMT measurement preferably reflects the characteristics of deep structures,and shows that a NE-tren-ding low resistivity fracture belt and a nearly vertical elongated low resistivity body occur at the depth of-500~-1000m in deep part of skarn alteration zone.The author concluded that the integrated application of pedogeochemical survey,high precision magnetic measurement and CSAMT measurement can preferably block out prospecting sections in the mining area and provide reference for verification in the future.