EH-4在江西省仙姑台铜多金属矿勘查中的应用

The application of EH-4 to the exploration of the Xiangutai copper-polymetallic deposit in Jiangxi Province

为实现仙姑台矿区找矿突破,在矿区采用EH-4连续电导率成像技术进行探测,通过寻找斑岩型隐伏岩体来寻找铜多金属矿。发现在电阻率反演断面图上,花岗闪长斑岩有三种异常标志:从高阻到低阻过渡带出现扭曲变形地段、低阻区局部高阻地段和高阻区局部低阻地段;对3条典型剖面进行了异常解释及钻探验证,取得了较好的地质效果。结果表明:在矿区内开展EH-4连续电导率剖面测量,可获得丰富的异常信息,为寻找斑岩型铜多金属矿提供地球物理依据。

EH-4 continuous conductivity imaging technology was employed in search for concealed orebodies so as to achieve a break- through in the Xiangutai ore deposit. The prospecting for copper-polymetallic deposits was preceded by the search for porphyry con- cealed rock masses. It was found that the granodiorite porphyry has three kinds of anomaly marks in the resistivity reversion sectional drawaing ： in the transitional zone from high resistance to low resistance, there appear contorted deformation segment, localized high re- sistance segment in low resistance area and localized low resistance segment in high resistance area. Anomaly interpretation and drilling verification were conducted along three typical profiles, with fairly good geological results achieved. The results show that the applica- tion of EH-4 continuous conductivity profile measurements to the ore district has obtained a wealth of abnormal information, achieved good geological effect, and provided geophysical basis in search for porphyry copper polymetallic ore deposits.