综合物探方法在焦家断裂带南延中的应用

The application of integrated geophysical methods to the southward extension of the Jiaojia faulted zone

焦家断裂带是山东省胶西北金矿集中区主要的成矿断裂之一,该断裂带南部被第四系严重覆盖,多年探索研究未果。此次利用高精度磁测、视电阻率联合剖面、CSAMT及SIP等多种物探方法,结合区内成矿地质条件,推断出焦家断裂带南延部分隐伏断裂分布情况,即在黄家附近向北至徐村院为一条断裂带(F1),向南分为三条断裂带(F1、F8和F9),其中F1为主断裂,F8、F9为其次级断裂。经钻探验证与物探推断的焦家断裂带南延部分相吻合,为该区下一步金矿勘查提供了找矿方向。

The Jiaojia faulted zone is one of the major ore-forming faults in the northwest Shandong gold ore concentration area. As it is seriously covered by Quaternary sediments in the south, years of investigation is unsuccessful. In this study, various geophysical methods such as high-precision magnetic survey, apparent resistivity united profile, CSAMT and SIP were used in combination with metallogenic geological conditions of the study area to tentatively investigate the southward extension of the Jiaojia faulted zone. As a result, the distribution of concealed faults in the southward extension part of the Jiaojia faulted zone was deduced, which provides ore-prospecting orientation for the next step of gold exploration.