卫星重、磁对应分析磁密比在判定地壳深部断裂上的应用——以西藏东北部地区为例  

The application of the satellite corresponding analysis of the magnetism-density ratio to the determination of the deep crust fractures: A case study of northeast region of Tibet

作　　者：刘前坤[1] 李皎皎[1] 徐璐平[1] 林晓星[1] 赵百民[1] 

机构地区：[1]中国国土资源航空物探遥感中心,北京100086

出　　处：《物探与化探》2015年第B12期119-125,共7页Geophysical and Geochemical Exploration

基　　金：国家高技术研究发展计划("863"计划)项目(2011AA060501)

摘　　要：通过重、磁对应分析中斜率的模型研究,指出磁密比可以有效判定地质体岩性边界。首次将该方法应用于西藏东北部地区,利用卫星重、磁数据分析该区域地壳深部断裂磁密比属性,并用前人的地震资料加以证实,结果表明磁密比与地壳深部岩性转换界面具有非常好的对应关系。Based on the study of the slope model for gravity and magnetic corresponding analysis,the authors point out that the magnetism-density ratio can effectively determine the lithologic boundary of the geological body. This method was first used in northeastern region of Tibet,the satellite gravity and magnetic data were used to analyze the magnetism-density ratio attribute of deep crust fractures in this region,and the result was verified by seismic data obtained by previous researchers. It is shown that there exists very good corresponding relationship between the magnetism-density ratio and the lithologic transfer interface.

关 键 词：对应分析 卫星重、磁 磁密比 西藏东北部 深大断裂 

分 类 号：P631[天文地球—地质矿产勘探]