赤峰市红岭铅锌矿外围浩布高浑迪地区物化探异常特征及找矿方向

Characteristics of geophysical and geochemical anomalies and prospecting direction in the Haobugaohundi area of the outer area of Hongling Pb-Zn deposit in Chifeng City

浩布高浑迪地区是红岭铅锌矿外围探矿的重点工作区之一,为了查明该区的成矿地质条件及找矿前景,同时为红岭铅锌矿外围地区找矿工作提供依据,对浩布高浑迪地区进行地质填图、地球化学测量及地球物理测量(激电中梯、高精度磁法)的综合研究工作。结果表明:(1)研究区内发育DJ-8、DJ-11等多处激电异常及M-5号磁异常,异常范围内视极化率最高可达8.2%,视电阻率最低为510~2 000Ω·m,磁异常峰值约为150 n T;(2)研究区内发育HT-1、HT-2及HT-5等多处组合异常,异常范围内Cu,Pb,Zn等主成矿元素含量明显高于背景值,且部分化探组合异常与物探异常间具有良好的空间位置匹配关系;(3)同时结合物化探测量成果及具体成矿条件,在浩布高浑迪地区内圈定了Ⅰ号和Ⅱ号两个找矿靶区,并取得了一定的找矿成果。综合研究表明,地质-物化探综合找矿方法在红岭铅锌矿外围探矿具有良好的效果。

Haobugaohundi is one of the key working areas in outer peripheral area of Hongling Pb-Zn deposit.In order to find out the metallogenic geological conditions and prospecting potential of this area,comprehensive work was carried out including geological mapping,geochemical survey and geophysical survey( polarization method and high precision magnetic method). The results show that( 1) the area developed several geophysical anomalies,such as DJ-8 IP anomaly and M5 high accuracy magnetic;( 2) the area also developed several geophysical assemblage anomalies,such as HT-1,HT-2 and HT-5 anomaly. The abnormal range of Cu,Pb,Zn and other main metallogenic elements content was significantly higher than the background value. The space position of different geophysical and geochemical anomalies matched well;( 3) through the combination of geophysical and geochemical surveying results and the specific metallogenic conditions,the direction of ore search is proposed. The study shows that the geological geophysical and geochemical prospecting method is effective in periphery prospecting of the Hongling deposit.