安基山铜矿床地质—地球物理模型及其找矿意义

Geological-geophysical model and ore prospecting significance for Anjishan copper deposit

安基山铜矿床是长江中下游成矿带东段的典型矿床之一,对控制该矿床的3条主勘探线的钻孔岩心进行了系统的物性测定,建立了矿床地质体与物性体的相关关系,通过对物性体正演的重、磁异常与实测异常对比,以及对矿区地球物理场的平面和剖面分布规律的总结,建立了安基山铜矿床的地质—地球物理模型,在此基础上建立了具有普遍意义的中等剥蚀深度下的同类矿床的地质—地球物理模型,阐述了模型的找矿意义。

Anjishan copper deposit is one of the typical copper deposits along the east block of metallogenic belt in the middle and lower reaches of Yangtze River. The authors conducted a systematic determination on the borehole cores from three major exploration lines that controlled the copper deposit, and set up correlativity between geological body of the deposit and physical property body. Through contrast of gravity and magnetic anomaly of physical property body and site measured anomaly, as well as a summary of the planar and profile distribution rules of ore district geophysical field, the authors built a geological-geophysical model for Anjishan copper deposit, depicted the ore prospecting significance of the model for other copper deposits of similar kind.