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Balanced Cross Section for Restoration of Tectonic Evolution in the Southwest Okinawa Trough
作者姓名:吴时国  倪祥龙  郭军华
作者单位:Key Lab of Marine Geology and Environment Institute of Oceanology Chinese Academy of Sciences College of Georesources and Information Petroleum University of China (Huadong) Qingdao 266555 China Ni Xianglong,Key Lab of Marine Geology and Environment Institute of Oceanology Chinese Academy of Sciences Graduate School Chinese Academy of Sciences Beijing 100049 China,Key Lab of Marine Geology and Environment Institute of Oceanology Chinese Academy of Sciences Graduate School Chinese Academy of Sciences Beijing 100049 China,Qingdao 266071 China,Qingdao 266071 China,Qingdao 266071 China
基金项目:中国科学院知识创新工程项目,the Taishan Scholarship Project of Shandong Province
摘    要:On the basis of the multi-channel seismic data and the other data, using 2DMove software, the tectonic evolution in three seismic profiles was restored since Pliocene. The tectonic restoration results show that: (1) the initial active center lay in the west slope and then was transferred to east and south via trough center during the evolution process; (2) several main normal faults controlled the evolution of the southern Okinawa Trough; (3) since Late Pliocene, the southern Okinawa Trough has experienced two spreading stages. The early is depression in Early-Middle Pleistocene and the late is back-arc spreading in Late Pleistocene and Holocene, which is in primary oceanic crust spreading stage.


Balanced Cross Section for Restoration of Tectonic Evolution in the Southwest Okinawa Trough
Wu Shiguo,Ni Xianglong,Guo Junhua.Balanced Cross Section for Restoration of Tectonic Evolution in the Southwest Okinawa Trough[J].Journal of China University of Geosciences,2007,18(1):1-10.
Authors:Wu Shiguo  Ni Xianglong  Guo Junhua
Institution:1. Key Lab of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; College of Georesources and Information, Petroleum University of China (Huadong), Qingdao 266555, China
2. Key Lab of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Graduate School, Chinese Academy of Sciences, Beijing 100049, China
Abstract:On the basis of the multi-channel seismic data and the other data, using 2DMove software, the tectonic evolution in three seismic profiles was restored since Pliocene. The tectonic restoration results show that: (1) the initial active center lay in the west slope and then was transferred to east and south via trough center during the evolution process; (2) several main normal faults controlled the evolution of the southern Okinawa Trough; (3) since Late Pliocene, the southern Okinawa Trough has experienced two spreading stages. The early is depression in Early-Middle Pleistocene and the late is back-arc spreading in Late Pleistocene and Holocene, which is in primary oceanic crust spreading stage.
Keywords:balanced cross section  tectonic evolution  back-arc basin  Okinawa Trough  
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