【摘要】 <正> 最近十余年来,我国古地磁学工作者曾对南方震旦纪地层以及北方蓟县的元古代地层做过一些古地磁学测定,并且对某些地质现象进行了解释。但是,对再早一些时期岩石的古地磁学研究仍属空白。地球的基本磁场主要起源于地球内部,它的参量必然反映地球的内部特征。按照地磁场的轴向地心偶极子假定,古地磁学的典型研究成果——视古地磁极移动轨迹应与地壳的构造发育演化过程有着内在的联系。太行山区是华北地台中、下元古界一个颇为发育的地区,本文简要报道作者对分布在该区地质年龄约为-2300百万年至-1650百万年的滹沱超群和长城系的古地磁学初步测定结果,并结合太行山区元古代早期和中期的大地构造问题提出粗浅的看法。更多还原

【Abstract】 In this paper, the paleomagnetic results of the rock samples from Hutuo Supergroup and Changcheng System (-2300-1650 m.y. ago) of Proterozoic in Taihang Mountains are reported, and the relation between the results and the early tectonic history of the North China Platform is discussed. It is very interesting that path of apparent polar wander (a.p.w.) that we draw is in the shape of a "α". It suggests that in this geological time North China Platform should be transformed from active state to stable, that is in the tectonically changing stage miogeosyneline was transformed into platform,更多还原