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
LIU Qian-Kun, LI Jiao-jiao, XU Lu-Ping, LIN Xiao-Xing, ZHAO Bai-Min
China Aero Geophysical Survey and Remote Sensing Center for Land and Resources, Beijing 100083, China
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.
刘前坤, 李皎皎, 徐璐平, 林晓星, 赵百民. 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[J]. 物探与化探, 2015, 39(S1): 119-125.
LIU Qian-Kun, LI Jiao-jiao, XU Lu-Ping, LIN Xiao-Xing, ZHAO Bai-Min. 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. Geophysical and Geochemical Exploration, 2015, 39(S1): 119-125.
[1] Garland G D.Combined analysis of gravity and magnetic anomalies[J].Geophysics,1951,16:51-62.[2] Cordell L,Taylor P T.Investigation of magnetization and density of a North Atlantic Seamount using Poisson's Theorem[J].Geophysics,1971,36(5):919-937.[3] Chandler V W,Koski J S,Hinze W J,et al.Analysis of multisource gravity and magnetic anomaly data sets by moving-window application of Poisson's theorem[J].Geophysics,1981,46(1):30-39.[4] 刘心铸.重磁异常对应分析:赴美学习重磁方法介绍之一[J].国外地质勘探技术,1985,(4):1-8.[5] 楼海,余钦范.青藏高原亚东-格尔木地学断面重磁异常的对应分析[J].现代地质,1991,5(3):338-344.[6] 刘沈衡.重磁异常对应分析及应用[J].物探化探计算技术,1993,15(3):232-237.[7] 刘沈衡,朱春生.重磁异常对应分析应用实例[J].有色金属矿产与勘查,1998,7(3):160-136.[8] 黎益仕,殷秀华,刘占坡.对应分析约束下的重磁联合反演及其在塔里木盆地的应用[J].地震地质,1996,18(4):361-367.[9] 殷秀华,黎益仕,刘占坡.南北构造带北段重磁异常的对应分析[J].地震地质,1999,21(4):370-376.[10] Tian X B , Liu Z, Si S K, et al.The crustal thickness of NE Tibet and its implication for crustal shortening[J].Tectonophysics,2014,634:198-207.