利用重磁电研究宁镇山脉与句容盆地结合部地质结构  

Gravity-magnetic-electric Study for the Geological Structure in Junction Zone between NanjingZhenjiang Mountain and Jurong Basin

作　　者：韩红庆 阮娟 殷梅 崔健 岑超 HAN Hongqing;RUAN Juan;YIN Mei;CUI Jian;CEN Chao(NO.814 Geophysical Exploration Co.,Ltd,Nanjing 210007,China;Jiangsu Geological Bureau,Nanjing 210007,China)

机构地区：[1]江苏华东八一四地球物理勘查有限公司,江苏南京210007 [2]江苏省地质局,江苏南京210007

出　　处：《四川有色金属》2022年第4期40-43,共4页Sichuan Nonferrous Metals

基　　金：江苏省有色金属华东地质勘查局基础科研项目“基于地球物理数据的地下水源识别软件系统研发”(HDYS-KY2020-02);江苏省有色金属华东地质勘查局基础科研项目“老矿山深边部地球物理找矿方法技术集成”(HDYS-KY2021-05)。

摘　　要：宁镇山脉由南京至镇江一带绵延一百多公里的低山、丘陵组成,其南东为句容盆地,对应宁镇断凸、句容凹陷两构造单元,以汤山-东昌街隐伏深大断裂分界。前人推测该断裂为南倾正断层,但缺少更详细的资料。本文利用音频大地电磁法(AMT)结合重力、磁力资料,探明了汤山-东昌街断裂的平面位置和垂向展布,解析了断层两侧宁镇断凸与句容凹陷的深部地质结构,揭示了宁镇地区盆山结合部深部地质信息。Nanjing-Zhenjiang Mountain range is composed of low mountains and hills stretching more than 100kilometers from Nanjing to Zhenjiang in Jiangsu Province. To the southeast of the Nanjing-Zhenjiang Mountain range is the Jurong Basin, which corresponds to two tectonic units of Nanjing-Zhenjiang fault-convex and Jurong Hollow and is delimited by Tangshan-Dongchangjie hidden deep fault. The fault was presumed to be a south dip normal fault, but more detailed data are lacking. In this paper, the plane position and vertical distribution of the Tangshan-Dongchangjie fault were proved by audio frequency magnetotelluric sounding(AMT) combined with gravity-magnetic data, and the deep geological structure of Nanjing-Zhenjiang fault-convex and Jurong Hollow on both sides of the fault was analyzed, revealing the deep geological information of the basin-range junction zone in Nanjing-Zhenjiang area.

关 键 词：音频大地电磁法(AMT) 宁镇山脉 句容盆地 盆山结合部 地质结构 

分 类 号：P631[天文地球—地质矿产勘探]