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东海盆地处于西太平洋俯冲带前缘,是发育在华南克拉通基底之上的,以晚白垩世-新生代沉积为主的新生代盆地.东海盆地性质是在活动大陆边缘减薄陆壳之上的,由于洋-陆俯冲消减所引起的张裂、拉伸作用而形成的弧后裂谷型盆地,是西太平洋众多“沟-弧-盆”体系的一部分.东海盆地陆架外缘隆起控制着东海盆地的演化过程,该地质单元形成于晚白垩世,是陆缘隆起和增生楔的复合体,中新世后由于菲律宾海板块的活动而解体为现今的钓鱼岛隆褶带和琉球隆起.结合对陆架外缘隆起的研究后认为,东海盆地晚白垩世以来的演化历程具有3大构造阶段,即:第一阶段,古新世-中始新世西部坳陷形成发展期;第二阶段,中始新世-渐新世东部坳陷形成发展期,其中,中晚始新世太平洋板块的转向是东、西部坳陷构造迁移的分界点;第三阶段,中新世-全新世,东海盆地进入到菲律宾板块影响时期,原先的构造格局开始分解.
The East China Sea basin is located in the front of the western Pacific subduction zone and is a Cenozoic basin dominated by the Late Cretaceous-Cenozoic sediments developed over the southern China craton. The East China Sea Basin is characterized by the reduction of continental crust on the active continental margin The post-arcuate rift basin formed by the tension and extension due to the subduction of the ocean-continent subduction is part of many “trench-arc-basin” systems in the western Pacific. Controlling the evolution of the East China Sea Basin. The geological unit was formed in the Late Cretaceous and is a complex of uplift and accretionary wedge. After the Miocene, due to the activity of the Philippine Sea Plate, it disintegrated into the present Diaoyu Longfang and Ryukyu uplift The study on the uplift of continental shelf shows that the evolutionary history of the East China Sea Basin since the Late Cretaceous has three major structural stages: the first stage, the Paleocene - middle Miocene western depression formed and the second Stage, the Eocene-Oligocene eastern depression formed during the development, in which the mid-late Eocene Pacific plate turning was the demarcation point of tectonic migration of the eastern and western sags; in the third stage, the Miocene-Holocene , East China Sea basin into the Philippines Block and time, the original structure pattern begins to break down.