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作 者:尚鲁宁[1] 张勇[1] 姚永坚[2] 吴浩 胡刚[1] 田陟贤[1] SHANG Luning;ZHANG Yong;YAO Yongjian;WU Hao;HU Gang;TIAN Zhixian(Qingdao Institute of Marine Geology,Qingdao 266071,Shandong,China;Guangzhou Marine Geological Survey,Guangzhou 510075,Guangdong,China)
机构地区:[1]青岛海洋地质研究所,山东青岛266071 [2]广州海洋地质调查局,广东广州510075
出 处:《中国地质》2020年第5期1323-1336,共14页Geology in China
基 金:中国地质调查局地质调查项目(DD20160137,DD20160138,DD20190236);国家自然科学基金项目(41606050,91858208)共同资助。
摘 要:晚新生代中国东部大陆边缘的构造活动主要集中于东海东缘。中新世以来菲律宾海板块俯冲、冲绳海槽弧后张裂、台湾弧-陆碰撞等一系列重大构造过程,塑造了现今琉球沟-弧-盆体系、台湾碰撞造山带和南海东北部的构造-地貌格局。本文基于对重磁和多道地震资料的解译,并结合前人研究成果,恢复了冲绳海槽构造演化史,阐明了冲绳海槽弧后张裂和台湾弧-陆碰撞之间的关系。在此基础上,重建了中新世以来欧亚板块、菲律宾海板块、南海板块之间的相互作用过程模型。本研究有助于进一步理解板块汇聚背景下东亚大陆边缘深部动力-热力过程对浅部构造格局变迁的制约和影响。The tectonic activities of the continental margin of eastern China during the Late Cenozoic were mainly concentrated on the eastern margin of the East China Sea.Since the Miocene,a series of major tectonic processes,such as the subduction of the Philippine plate,the back-arc rifting of the Okinawa Trough and the Taiwan arc-continent collision,have shaped the present tectonic-geomorphological patterns of the Ryukyu trench-arc-back-arc basin system,the Taiwan collision orogenic belt and the northeastern South China Sea.Based on the interpretation of gravity,magnetism and multi-channel seismic data and combined with previous research results,the authors restored the tectonic evolution history of the Okinawa Trough and clarified the relationship between the back-arc tension of the Okinawa Trough and the Taiwan arc-land collision.On such a basis,the interaction processes between the Eurasian plate,the Philippine Sea plate and the South China Sea plate since Miocene were reconstructed,and a new model of plate interaction was proposed.This work is helpful to the further understanding of the constraints and effects of deep dynamic and thermal processes on shallow tectonic framework changes in the context of plate convergence on the East Asian continental margin。
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