播卡金矿地球物理特征及成矿预测

Metallogenic forecast and geophysical characteristics of the Boka gold deposit

通过分析播卡金矿的成矿条件,结合本区地质构造特征及岩石地层地球物理性质等,选择并部署了1∶1万时间域瞬变电磁法剖面,通过分析研究,解译出矿区的主要的断裂和断裂间的地垒构造,与已知矿体对比分析,验证并确定了断裂构造对矿(化)体空间分布的控制作用;文章还分析预测了地垒构造核部及测区西部的深部为下一步找矿工作的重点目标区。时间域瞬变电磁法在播卡矿区找矿预测中效果显著,该方法和经验值得借签。

TEM profiles at the scale of 1 ; 10000 were chosen through the analysis on the ore forming condi- tions of the Boka gold deposit combined with geological and tectonic characteristics of the region and geo- physical features of the strata. A horst between major fractures was interpreted which was compared and an- alysed with the existing orebodies and the control function of the faulted structures for spacious distribution of the orebodies （mineralization） was testified and figured outl This study forecasted the core of the horst structure and the depth of western prospecting area as the key target areas for further ore prospecting. The TEM method has a remarkable effect in ore forecasting in the Boka gold deposit. The exploration experience is worth learning.