磁组构形成机理与动力学意义  

Formation mechanism and dynamic significance of the magnetic structure

作　　者：韩晓飞[1,2] 史双双[1,2] 董斌[1,2] 张龙飞[1,2] 张丽[1,2] HAN Xiao-fei;SHI Shuang-shuang;DONG Bin;ZHANG Long-fei;ZHANG Li(Earthquake Administration of Shanxi Province,Taiyuan 030021,China;State Key Observatory of Shanxi Rift System,Taiyuan 030025,China)

机构地区：[1]山西省地震局,山西太原030021 [2]太原大陆裂谷动力学国家野外科学观测研究站,山西太原030025

出　　处：《矿物学报》2020年第2期165-168,共4页Acta Mineralogica Sinica

基　　金：山西省自然科学基金(编号:201901D111462);山西省地震局科研项目(编号:SBK-2033);山西省青年基金面上项目(编号:201701D221019);山西省重点研发计划项目(编号:201603D321124);地震科技星火计划项目(编号:XH18011)。

摘　　要：岩石磁组构的形成机理:如火山活动、构造活动、流体活动引起磁性矿物的定向排列,改变了矿物或者部分矿物原生剩磁的排列方向(矿组构),定向排列的磁性矿物在当时地球磁场的影响下被重新磁化,赋予新的磁性特征,同时反映了当时矿物的动力学特征。磁化率各向异性可以很好用来分析、展示和恢复地球动力学过程,是研究地球动力学很好的方法和工具。The formation mechanism of the rock magnetic structure includes that volcanic,tectonic,and fluid activities caused the orientation alignment of magnetic minerals,changes of the alignment direction of minerals or of the original residual magnetism(mineral structure)of a part of minerals,the re-magnetization of directional aligned magnetic minerals under the influence of the earth’s magnetic field at the time,or to give new magnetic characteristics.The rock magnetic structure reflects the dynamics of minerals at that time.The magnetic susceptibility anisotropy can be well used to analyze,display and restore the geodynamic process and is a good method and tool for studying geodynamics.

关 键 词：磁组构 矿物颗粒 矿物成分 磁化率各向异性 地球动力学 

分 类 号：P318.4[天文地球—固体地球物理学] P573[天文地球—地球物理学]