时域激电法单极-偶极装置在铅-锌矿勘查中的应用效果

APPLICATION EFFECT OF TIME-DOMAIN INDUCED POLARIZATION POLE-DIPOLE ARRAY METHOD IN EXPLORATION OF LEAD-ZINC DEPOSIT

文章描述了测区地质概况和岩(矿)石电性特征,结合图示简述了测深装置原理、布极方式、探测深度等。通过时间域激发极化法电阻率和充电率特征,根据中间梯度法推测了断裂和主要岩性分界,浸染状铅-锌金属硫化物在平面上的走向和矿化范围,依据单极-偶极测深能够有效地确定含铅锌浸染状金属硫化物矿体空间位置,结合点源梯度剖面上充电率异常特征,推测了极化体产状。钻探验证在断层中见铅锌矿化,取得了较好的地质效果。

This paper simply describes geological character, rock and ore electricity signature in the surveying area, and explains principle of sounding device, depth of sounding and method of spread geometry using diagrams. According to apparent resistivity and chargeability characters of time - domain induced polarization method and based on central gradient array method to predict boundary between fault and major rocks, trend direction in plane and mineralizing extent of disseminated lead - zinc sulfide ores are determined. Pole - dipole array depth sounding can ascertain space position of sulfide mineralization. Integrated with chargeability anomaly in the profile of point gradient sounding method, occurrence of the polarization body can be plotted out. Lead -zinc mineralization in the faults tested by drilling shows that this method has got better geological effects.