华东地区前寒武纪主要地质事件及构造演化

通过对地层分区与板块构造关系的分析,依据华东地区前寒武纪地质事件主要特点及划分原则．在充分了解现代构造观和基本地质事实基础上,建议将华东地区“晋宁运动二幕”改为“休宁上升‘”;“栏杆运动”和“霍丘运动”改为“栏杆上升”和“霍丘上升”．因为它们不具备造山运动性质。通过对新太古代末蚌埠运动、古元古代末龙川运动、迪口运动,中元古代末凤阳运动、青白田纪内部神功运动的特点分析,认为区内经历了新太古代陆核的生成;占元占代褶皱变质和混合岩化;凤阳运动和神功运动造成了华北古板块、扬子古板块和华夏古板块的拼合等演化阶段;并发生了四次造山运动和三次裂陷运动。

The main geological events and the tectonic evolution of Precambrian in East China

By the analysis of relation betwen the stratum distribution and the structure,the main characteristics and the division principle of geology events in Precambrian in East China,we suggest to substitute "The Second Period of Jinning Orogenesis" for "Xiuning Uplift"; to replace "the Langan Orogeny" and "Huoqiu Orogeny" with "Langan Uplift" and "Huoqiu Uplift" respectively, because they did not show the characteristic of orogeny. By analyzing the characteristic of the Bengbu Orogeny in Neoarchean,Longchuan Orogeny,Dikou Orogeny in the Paleoproterozoic, late-Mesopoterozoic Fengyang Orogeny, Shengong Orogeny in the end of Neoproterozoic,we think that the Fengyang and Shengong Orogensis result in the jointing of the North China,Yangtze and the Cathaysia paleoplates.