CSAMT法在哈达门沟金矿中的应用

哈达门沟金矿床是内蒙古中部的一个特大型金矿床，矿化类型主要是钾长石化，而不是华北地台大多数金矿床所常见的绢云母化，矿床类型具有一定的特殊性。矿区内有山前和山后2条大断裂控制着成矿带的展布方向，这2条断裂也派生出许多次级断裂。山前钾化带是一条靠近山前断裂呈NEE向展布的砖红色钾长石化蚀变带，区内已发现的矿（化）体主要产于钾长石化蚀变岩内或蚀变岩中心的石英脉中。CSAMT法具有勘探深度大，抗干扰能力强，对深部2 000 m以内地质体分布反映清晰明显的优点，将其应用于哈达门沟矿区找矿工作中，结果表明，数据反演异常对山前断裂和山前钾化带有很好的反映，并在深部发现了隐伏矿（化）体，证明CSAMT具有很好的地质找矿效果。

Application of CSAMT Method in the Hadamengou Gold Deposit

Hadamengou gold deposit is a super-large gold deposit in the central of the Inner Mongolia.The mineralization type is potassic feldspar that is different with the common sericitization in the most of gold mineral deposit in the North China Platform.The distribution of metallogenic belt is controlled by two big rift belts in front and back of the mountain,and they create many of secondary faults.Piedmont potassic alteration zone is a NEE-NE red-brick potassium feldspar alteration zone nearby piedmont fault.The orebody discovered in this district is mainly formed in K-feldspar alteration rock or in quartz veins among the altered rock.CSAMT method has such merits as great exploration depth,strong anti-interference ability,clear resolution ability for the geological body within the depth of 2 000 m.CSAMT is applied in Hadamengou ditch mine,and the result shows that,the piedmont fault and piedmont potassic alteration zone can be reflected by inversion data abnormality, concealed orebody is discovered in the deep of the body,so CSAMT is proved a great technique in geological prospecting.