胶东栖霞地区西林断裂带深部结构特征与找矿方向  

Deep Structural Characteristics and Prospecting Direction of Xilin Fault Zone in Jiaodong Area

作　　者：吕军阳 王斌 刘向东 闫春明 钮涛 尹召凯 王珊珊 张亮亮 周宜康 宋林君 LV Junyang;WANG Bin;LIU Xiangdong;YAN Chunming;NIU Tao;YIN Zhaokai;WANG Shanshan;ZHANG Liangliang;ZHOU Yikang;SONG Linjun(No.6 Geological Brigade of Shandong Provincial Bureau of Geology and Mineral Resources,Technology Innovation Center for Deep Gold Resources Exploration and Mining of the Ministry of Natural Resources,Shandong Weihai 264209,China)

机构地区：[1]山东省地质矿产勘查开发局第六地质大队,自然资源部深部金矿勘查开采技术创新中心,山东威海264209

出　　处：《山东国土资源》2024年第3期79-84,共6页Shandong Land and Resources

基　　金：山东省省级地质勘查项目“山东省栖霞地区西林断裂带深部金矿资源潜力评价”(编号:鲁勘字〔2021〕29号)。

摘　　要：近年来,西林断裂带找矿勘查工作发现其深部显示出良好的金矿化前景,该断裂带有望成为胶东重要成矿区带之一并引领胶东金矿找矿方向的战略性转移。西林断裂带深部结构特征是制约该断裂带找矿取得突破亟需解决的关键科学问题。本次开展反射地震、可控源音频大地电磁测深(CSAMT)、广域电磁测深及机械岩心钻探工作对西林断裂带深部构造特征进行揭露,识别了区内不同地质体的物性特征,推断了西林断裂带的深部空间展布形态,在600 m~800 m标高位置出现较为明显的高阻、低阻分带现象。通过钻探揭露,西林断裂带与围岩接触位置为610 m标高,验证了本次物探工作对西林断裂带赋存位置的推断并控制了西林断裂带的深部延伸情况,为西林断裂带进一步地质工作提供了地球物理依据。In recent years,through exploration work in Xilin fault zone,it is found that there is a good phenomenon of gold mineralization in the deep part.This fault zone is expected to become one of the important mineralization zones in Jiaodong area and lead the strategic transfer of exploration direction of gold deposits in Jiaodong area.The deep structural characteristics of Xilin fault zone are key scientific problems that urgently need to be addressed in order to achieve breakthroughs in mineral exploration in this fault zone.Reflection seismic,controllable source audio magnetotelluric(CSAMT),wide area electromagnetic sounding,and mechanical core drilling are carried out to reveal the deep structural characteristics of Xilin fault zone.The physical characteristics of different geological bodies in the area have been identified,and the deep spatial distribution pattern of Xilin fault zone has been deduced.There are obvious high resistance and low resistance zoning phenomena at the elevation of-600m~-800m.Through drilling,it is revealed that the contact position between Xilin fault zone and the surrounding rocks is at an elevation of-610m.It has verified the inferences of the occurrence location and the control of deep extension of Xilin fault zone in this geophysical exploration work.It will provide a geophysical basis for further geological work in this area.

关 键 词：西林断裂带 深部结构 反射地震 可控源音频大地电磁 胶东 

分 类 号：P631.521[天文地球—地质矿产勘探]