区域重力调查在蓟县-沧州地区的应用及认识  

Application and Understanding of Regional Gravity Survey in Jixian-Cangzhou Area

作　　者：苏永军 赵更新 张国利 刘继红 匡海阳 

机构地区：[1]中国地质调查局天津地质调查中心,天津300170

出　　处：《地质调查与研究》2015年第2期129-133,共5页Geological Survey and Research

基　　金：中国地质调查"蓟县-沧州地区1/25万基础地质调查修测(1212011220570)"

摘　　要：蓟县-沧州地区进行1/25万区域重力测量取得了初步的调查研究成果。根据区域重力场特征,在该研究区划出24条断裂和4条重要梯级带。根据断裂构造分布情况和该区地质资料,对研究区进行了构造单位的划分,其划分11个III级构造单元和19个IV级构造单元。同时,还对研究区盆地构造格局与油气田的关系、断裂构造与以往地震发生点的关系进行了分析。This article summarizes the entire process of regional gravity survey at the scale of 1：250 000. The process includes instrument preparation for the field, GPS net linking and gravity base-point net linking, data acquisition, data processing, interpretation of gravity anomaly and comprehensive research. Through regional gravity survey in Jixian-Cangzhou area, the project has preliminary achievement. According to the characteristics of regional gravity field, authors outline twenty four fracture lineaments and four important gradient belts; based to geologcal data and distribution of tectonic fractures, authors outline eleven III grade structural units and nineteen IV grade structural units; analyze the relationship between oil-gas field and basin tectonic framework, and the relationship between previous earthquake location and fault structure in the study area.

关 键 词：区域重力调查 GPS测量 断裂 油气田 地震 

分 类 号：P631.1[天文地球—地质矿产勘探]