低频EH4大地电磁测深在金矿深部找矿中的应用研究

Applied Research of Low Frequency EH4 Magnetotelluric Sounding in Prospecting of Deep Gold Mine

低频EH4大地电磁测深是进行固体矿产深部探矿预测有效的物探手段,尤其是对矿体分布与构造形态一致的矿种效果较明显。本文以河南省嵩县东湾金矿区为例,根据矿区内岩(矿)石岩性、矿化蚀变不同造成物理电性、电阻率不同的特征,通过EH4大地电磁测量测深,测得含矿构造的几何形态,推测成矿有利部位,并进行钻探验证,取得了预期效果。

Low frequency EH4 magnetotelluric sounding is effective geophysical prospecting method for prediction of deep prospecting of solid menerals, especially for the orebodies with the same orebody distribution and structural configuration. This paper takes Dongwan Gold Mine in Songxian for example, based on the features of difference of rock lithology, mineralization-alteration resulting in the difference of physical electric and resistivity, by means of EH4 magnetotelluric sounding geometric parameter of ore-bearing structures is obtained, furthermore, the favorable position for mineralization is predicted, which can be verified by drilling to achieve the intended effect.