湖相沉积盆地内隐伏断裂的电阻率层析成像探测——以通海盆地为例  

Application of Electrical Resistivity Tomography to the Detection of Buried Faults in Lake Sedimentary Basin:A Case Study in Tonghai Basin

作　　者：沈坤 朱涛[2] 金志林 周建国[2] 蔡建华 吴富焕 

机构地区：[1]玉溪市防震减灾局,云南玉溪653100 [2]中国地震局地球物理研究所,北京100081 [3]通海县防震减灾局,云南玉溪652700

出　　处：《CT理论与应用研究（中英文）》2011年第4期505-512,共8页Computerized Tomography Theory and Applications

基　　金：中央级事业单位基本科研业务费专项"云南玉溪;江川和通海盆地盆山过渡带结构电阻率层析成像探测"(DQJB11C16)

摘　　要：本文利用电阻率层析成像方法对湖相沉积盆地——通海盆地内的小江断裂的西支断裂进行了探测。发现在电阻率图像的较深区域才能识别出断裂的位置和产状,它在通海盆地内的走向约为N47°E,倾角约为57°～66°,视倾向为NW或N,与以往的研究结果基本一致。In the present paper, electrical resistivity tomography was used to detect the west branch of Xiaojiang fault in lake sedimentary Tonghai basin. It is found that the location and attitude of this fault could be revealed out only in the deeper part of resistivity tomograms. Our results indicate that this fault has the strike of about N47° E, the apparent dip angle of about 57-66° and the apparent dip direction of NW or W in Tonghai basin, which is almost consistent with previous results.

关 键 词：电阻率层析成像 断裂 湖相沉积 盆地 小江断裂 

分 类 号：P631.322[天文地球—地质矿产勘探]