焦家断裂带南段深部地球物理地球化学特征与找矿方向

Geophysical and Geochemical Characteristics and Prospecting Direction in Deep Section of Southern Jiaojia Fault Belt

摘要:

该文选取焦家断裂带南段的徐村院—史家地区作为研究的重点地区。通过可控源音频大地电磁测深、激电测深、钻探验证等手段，首次确定焦家断裂带自徐村院—姬家—黄家西—史家西—大尹家东一线延伸方向，将焦家断裂带沿走向向南推断了6km；认为焦家断裂带南段倾向W，倾角30°～50°，局部可达78°，断裂平面上呈S形，形态不规则；查明了焦家断裂带南段深部地球物理、地球化学特征；钻探揭露了焦家断裂带南延位置，拓展了焦家金矿带的找矿空间，提出了新的找矿方向。

Abstract:

In this paper, selecting Xucunyuan—Shijia area in southern Jiaojia fault belt as a key study area, by using electrical resistivity, electrical sounding, drilling verification and other means, it is firstly determined that Jiaojia fault belt extends along Xucunyuan—Jijia—Huangjiaxi—Shijiaxi—Dayinjiadong. The Jiaojia fault zone is inferred to be 6km along the strike southward. It is regarded that the trend in southern Jiaojia fault belt is NW, and inclination angle is 30°~50°which can reach 78°in regional area. The fracture shows S shape and irregular shape in plane. Geophysical and geochemical characteristics in deep part of southern Jiaojia fault belt have been identified. Drilling reveals the southern extension position, expands prospecting space, and puts forward a new prospecting direction of Jiaojia fault belt.