沧东断裂山岭子东段地质构造分析  

Geological Structure Analysis on the Shanlingzi Eastern Part of the Cangdong Fault

作　　者：王继革[1] 易志东[1] 靳宝珍[1] 贾志[1] 岳丽燕[1] 魏永民[1] 

机构地区：[1]天津地热勘查开发设计院,天津300251

出　　处：《地质调查与研究》2013年第3期189-193,共5页Geological Survey and Research

基　　金：中国地质调查项目:天津市基岩地质构造调查与区域地壳稳定性评价(1212011220232)

摘　　要：依据钻井、MT测深、地震剖面资料对沧东断裂山岭子东段地质构造进行了研究,认为该段沧东断裂断面形态呈"阶形",自沧县隆起至北塘凹陷由高、中、低三个台阶组成断阶构造。中生代白垩纪末期,在南东-北西向压扭应力作用下形成褶皱及逆断层,新生代古近纪反转为正断层,断阶带内发育北东及北北西向共轭剪切断层,它们是沟通不同热储层的重要通道。Based on the drilling data, combining with MT sounding, seismic profile data, the geological structure of Sanlingzi Eastern Part oF Chandong Fault was studied. It is suggested that the fault plane of this section shows“ladder type”, and composed of three steps：high, middle and low fault terrace structure from Cangxian uplift to Beitang sag. In end of Mesozoic cretaceous period, the fold and thrust fault formed under the action of NW direc-tion torsional stress. And during Cenozoic paleogene age turned into normal fault.The fault terrace zone devel-oped NE and NNW conjugate shear faults, and they are important communication channels of different thermal reservoir in this area.

关 键 词：沧东断裂 山岭子 断阶带 构造反转 

分 类 号：P542.3[天文地球—构造地质学]