Neogene subsidence pattern in the multi-episodic extension systems: Insights from backstripping modelling of the Okinawa Trough
文献类型：期刊论文
| 作者 | Fang, Penggao; Ding, Weiwei3,5; Lin, Xiubin; Zhao, Zhongxian2; Fang, Yinxia3; Li, Chunfeng1 |
| 刊名 | MARINE AND PETROLEUM GEOLOGY
 |
| 出版日期 | 2020 |
| 卷号 | 111页码:662 |
| 关键词 | Okinawa trough Tectonic subsidence Propagated rifting Controlling factors Gagua ridge Anomalous subsidence |
| ISSN号 | 1873-4073 |
| DOI | 10.1016/j.marpetgeo.2019.08.051 |
| 英文摘要 | Extensional systems of back-arc basins have been widely recognized and studied in SE Asia, however the interactions between extensional tectonics and spatial-temporal distributions of tectonic subsidence in an active back-arc basin are poorly known. Using a backstripping technique, we analysed 33 multichannel seismic profiles to calculate the Neogene tectonic subsidence across the entire Okinawa Trough (OT) for the first time. Reconstruction of the tectonic subsidence shows that the OT can be roughly divided into four subsidence stages with variable rate. By comparing the temporal-spatial distribution of the intensive subsidence area, we confirmed that rifting events first occurred in the northern segment (NOT) and middle segment (MOT) from the Miocene to Late Pliocene, and then propagated to the southern segment (SOT) after the Late Pliocene. The factors controlling the rapid tectonic subsidence over the entire OT can be classified into two categories: 1) NE-to NNE-trending normal faulting, related to extension of the OT, and NW- to NWW-trending strike-slip faulting; i.e., the Tokara Fault and the Miyako Fault, related to subduction of the Philippine Sea Plate under the Eurasian Plate; 2) The anomalous rapid subsidence occurred in the southernmost part of the SOT is likely related to the subducted Gagua Ridge which caused magma intrusion resulting from partial melting. We suggest that magmatic bodies produced by partial melting of subducted materials intruded into the crust and created a dense lithosphere, causing this rapid tectonic subsidence. |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18597]  |
| 专题 | 南海海洋研究所_中科院边缘海地质重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, South China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China 2.Shanghai Jiao Tong Univ, Sch Oceanog, Shanghai 20030, Peoples R China 3.Zhejiang Univ, Sch Earth Sci, Hangzhou 310027, Zhejiang, Peoples R China 4.Zhejiang Univ, Ocean Coll, Inst Marine Geol & Resources, Zhoushan 316021, Peoples R China 5.MNR, Inst Oceanog 2, SOA, Key Lab Submarine Geosci, Hangzhou 310012, Zhejiang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fang, Penggao,Ding, Weiwei,Lin, Xiubin,et al. Neogene subsidence pattern in the multi-episodic extension systems: Insights from backstripping modelling of the Okinawa Trough[J]. MARINE AND PETROLEUM GEOLOGY,2020,111:662, 675. |
| APA | Fang, Penggao,Ding, Weiwei,Lin, Xiubin,Zhao, Zhongxian,Fang, Yinxia,&Li, Chunfeng.(2020).Neogene subsidence pattern in the multi-episodic extension systems: Insights from backstripping modelling of the Okinawa Trough.MARINE AND PETROLEUM GEOLOGY,111,662. |
| MLA | Fang, Penggao,et al."Neogene subsidence pattern in the multi-episodic extension systems: Insights from backstripping modelling of the Okinawa Trough".MARINE AND PETROLEUM GEOLOGY 111(2020):662. |
入库方式： OAI收割
来源：南海海洋研究所
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