对怀远运动的再认识

Re-recognization of Huaiyuan Movement

摘要:

怀远运动是华北地台早古生代一次重要的区域性构造运动。以往的地质研究仅局限于其构造剥蚀面。依据鲁西及邻区的区域地质调查成果 ,认为怀远运动经历了一个较长时期(中寒武世张夏期→早奥陶世大湾期 )的发展过程 ,可分为三山子组白云岩形成→隆起剥蚀→马家沟组底部同生构造角砾岩的形成→滑褶带的产生等四个阶段 ,文中对该运动的形成机制作了探讨。

Abstract:

According to recent regional geological survey and research achievements, it is put forward that Huaiyuan movement is an important regional tectonic movement of Huabei platform in early Palaeo-proterozoic period. It underwent a long developing history (from Gushan stage in Neo-Cambrian to Dawan stage in early Ordovician), and can be divided into four phases as: dolomitite in Sanshanzi formation→uplift and denudation→syngenetic structure breccia in the bottom of Majiagou formation→slip fold form. The forming...