论文部分内容阅读
根据对湘西北奥陶纪和黔东北志留纪的层序划分,结合中国南方奥陶—志留纪已确定的构造运动幕次,同时辅以该地区不同期岩相古地理的变化,讨论了层序界面与构造运动的关系.研究结果表明,在中国南方二级层序界面的形成更多地受到区域构造运动的影响,而三级层序界面主要受全球海平面变化的影响.从沉积旋回的观点出发,认为中国南方加里东运动的最后一幕应在中志留世早期,即回星哨期末.
Based on the sequence division of Ordovician and northeast Silurian in western Hunan, combined with the determined episode of Ordovician-Silurian tectonic movement in southern China and the change of palaeogeography at different lithofacies in this area, Relationship between sequence boundaries and tectonic movement. The results show that the formation of the secondary sequence boundaries in southern China is more affected by regional tectonic movements, whereas the tertiary sequence boundaries are mainly affected by global sea level changes. From the point of view of sedimentary cycle, it is believed that the last scene of the Caledonian movement in southern China should be in the early Middle Jurassic, that is, at the end of the return date.