蔡家营铅锌银多金属矿综合物化探找矿方法应用

Application of Comprehensive Geophysical Geochamical Prospecting Methods in Caijiaying Pb-Zn-Ag Polymetallic Deposit

通过在蔡家营铅、锌、银多金属矿床的Ⅱ矿带采用最新的地球物理、地球化学综合方法的试验效果研究,提出了找矿模式,为下一步外围及地质环境相似地区找矿提供依据。高精度重力测量效率较高,通过分析浅部剩余重力异常,能够合理圈定地层、深大断裂的分布、走向等;然后进行激电中梯扫面和岩石化学测量,再次对于地层、断裂给予定位,并且进一步确定低阻、高极化率,以及矿体指示元素的平面位置;在此基础之上,采用可控源音频大地电磁法(CSAMT)确定低阻、高极化体的走向、倾向、埋深等;最后合理布钻,获得较好的地质勘查效果。

Based on the experimental results of the latest comprehensive geophysical and geochemical methods in Caijiaying lead,zinc,and silver polymetallic deposit zone Ⅱ,a prospecting model is proposed to provide a basis for prospecting in the peripheral and similar geological environments.High-precision gravity measurement is more efficient.By analyzing the residual gravity anomaly in the shallow part,it can reasonably delineate the stratum,the distribution and direction of deep faults.Then IP-sweeping surface and rock chemistry measurement is carried out,again positioning the strata and fractures,and further determine the low-resistance,high-polarizabilityand the plane position of the ore body indicating elements.Based on the use of controllable sources,use the controlled source audio frequency magnetotelluric method(CSAMT)to determine the direction,inclination and depth,etc.of low-resistance and high-polarization bodies.Finally,a reasonable drilling is obtained to obtain a better geological effect.