中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 深海科学与工程研究所
  3. 中国科学院深海科学与工程研究所
  4. 深海科学研究部
  5. 深海地球物理与资源研究室
Early Miocene magmatism in the Baiyun Sag (South China Sea): A view to the origin of intense post-rift magmatism

文献类型：期刊论文

作者Sun, Qiliang4,5; Alves, Tiago M.3; Wu, Shiguo2; Zhao, Minghui1; Xie, Xinong5
刊名GONDWANA RESEARCH
出版日期2023-08-01
卷号120页码:127-144
关键词Magmatism Magma plumbing system Listric boundary fault Hainan Plume South China Sea
ISSN号1342-937X
DOI10.1016/j.gr.2022.05.013
通讯作者Sun, Qiliang(sunqiliang@cug.edu.cn)
英文摘要Post-rift magmatism associated with seafloor spreading (-32 Ma to -15 Ma) and post-spreading tectonics (from -15 Ma to the present day) is widely recorded in the South China Sea (SCS). However, the phenomena originating this magmatism are still under debate, hindering a full understanding of the SCS' evolution. In this study, extensive and voluminous magmatic bodies in the northern SCS are investigated based on the integration of 3D/2D seismic and borehole data. Magmatism occurred from -19.0 Ma to -17.5 Ma, a period of time marking the cessation of seafloor spreading above listric boundary faults formed on the southern shoulder of the Baiyun Sag. Magmatism close to the main basin depocenter (Magmatic Zone 1) is documented in the form of oblique/saucer sills that step upwards. They have fed volcanoes and lava flows to a paleo-seabed via igneous dikes. In contrast, magmatism in the shoulders of the Baiyun Sag (Magmatic zones 2 and 3) occurred above listric boundary faults that formed large magma pathways. The phase of magmatism documented in this work was probably triggered by the retreat of the Hainan Plume and associated mantle readjustments during jumps in spreading-ridge location. These events rejuvenated mantle upwelling underneath the highly stretched Baiyun Sag to generate partial melting. Mantle upwelling also reactivated the listric boundary faults flanking this basin, generating migration pathways for deep-seated magma. This work addresses the syn-spreading magma plumbing system of the Baiyun Sag in detail, and provides evidence for the origin of intense post-rift magmatism in the northern SCS. It also highlights that mantle readjustments triggered by changes in seafloor spreading (ridge jump or cessation of spreading) can generate significant post-rift magmatism.& COPY; 2022 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved.
WOS关键词RIVER MOUTH BASIN ; NORTHERN MARGIN ; SPATIAL-DISTRIBUTION ; CONTINENTAL MARGINS ; VOLCANIC MOUNDS ; EVOLUTION ; INSIGHTS ; CRUST ; RIFT ; FEATURES
资助项目National Key Ramp;D Program of China[2018YFC0310000] ; National Scientific Foundation of China[42176085] ; National Scientific Foundation of China[41676051] ; National Scientific Foundation of China[41730532] ; Fundamental Research Funds for the Central Universities-the China University of Geosciences (Wuhan)[CUG2106207]
WOS研究方向Geology
语种英语
WOS记录号WOS:001039993900001
出版者ELSEVIER
资助机构National Key Ramp;D Program of China ; National Scientific Foundation of China ; Fundamental Research Funds for the Central Universities-the China University of Geosciences (Wuhan)
源URL[http://ir.idsse.ac.cn/handle/183446/10414]  
专题深海科学研究部_深海地球物理与资源研究室
通讯作者Sun, Qiliang
作者单位1.Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Ocean & Marginal Sea Geol, Guangzhou 510301, Peoples R China
2.Chinese Acad Sci, Inst Deep sea Sci & Engn, Lab Marine Geophys & Georesources, Sanya 572000, Peoples R China
3.Cardiff Univ, Sch Earth & Environm Sci, 3D Seism Lab, Main Bldg,Pk Pl, Cardiff CF10 3AT, Wales
4.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266061, Peoples R China
5.China Univ Geosci, Hubei Key Lab Marine Geol Resources, Wuhan 430074, Peoples R China
推荐引用方式
GB/T 7714		 Sun, Qiliang,Alves, Tiago M.,Wu, Shiguo,et al. Early Miocene magmatism in the Baiyun Sag (South China Sea): A view to the origin of intense post-rift magmatism[J]. GONDWANA RESEARCH,2023,120:127-144.
APA Sun, Qiliang,Alves, Tiago M.,Wu, Shiguo,Zhao, Minghui,&Xie, Xinong.(2023).Early Miocene magmatism in the Baiyun Sag (South China Sea): A view to the origin of intense post-rift magmatism.GONDWANA RESEARCH,120,127-144.
MLA Sun, Qiliang,et al."Early Miocene magmatism in the Baiyun Sag (South China Sea): A view to the origin of intense post-rift magmatism".GONDWANA RESEARCH 120(2023):127-144.

入库方式： OAI收割

来源：深海科学与工程研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。