内蒙古河套断陷带及其邻区地壳磁性构造特征  

CRUSTAL MAGNETIC STRUCTURE CHARACTERS IN HETAO RIFT ZONE AND ITS VICINITY,INNER MONGOLIA

作　　者：张先[1] 贺为民[1] 沈京秀 赵丽[1] 李长法[1] 

机构地区：[1]国家地震局地球物理勘探大队

出　　处：《西北地震学报》1995年第1期31-35,共5页Northwestern Seismological Journal

摘　　要：本文依据航磁资料和频率域磁性单界面反演方法，计算了河套断陷带及其邻区的基底磁性界面的埋深；依据三维磁性层反演方法求取了该区磁性层下界面，即居里界面的埋深；分析了磁性层上下界面的定量特征，并结合重力、地热、地形变诸方面的研究成果，讨论了该区的地壳结构特征及地震成因。The buried depth of basement magnetism interface in Hetao rift zone and its adjacentarea,Inner Mongolla, is calculated by using inversion method for aeromagnetic data and singlemangnetic boundary in the frequency domain. The buried depth of lower boundary of magneticlayer,i.e. Curie surfaee,is also calculated in terms of inversion theory for 3-D magnetic stra-tum.Quantitative features of the upper and tower boundaries of the magnetic stratum are anal-ysed and the crustal structure characteristics and seismogenesis of this area are discussed basedon the research results for gravity,geotherm and ground deformatfon.

关 键 词：地震地质 磁性构造 河套断陷带 地壳结构 

分 类 号：P315.2[天文地球—地震学] P313.2[天文地球—固体地球物理学]