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Do microcontinents nucleate subduction initiation?

文献类型：期刊论文

作者Zhu, Mingshuai1,2; Yan, Zhiyong3; Pastor-Galan, Daniel4,5; Chen, Lin3; Miao, Laicheng1,2; Zhang, Fuqin1,2; Li, Shun6; Yang, Shunhu1,2
刊名GEOLOGY
出版日期2023-07-01
卷号51期号:7页码:668-672
ISSN号0091-7613
DOI10.1130/G51222.1
英文摘要Subduction initiation is a pivotal process in plate tectonics. Models of subduction initiation include the collapse of passive margins, oceanic transform faults, inversion of oceanic core complexes, and ridge failure but have ignored the potential effects of continental crust relicts within the oceanic crust. In this paper, we explore the role of microcontinents on subduction initiation through two-dimensional thermo-mechanical numerical modeling. We consider three scenarios with variable ages of oceanic crust surrounding the microcontinent and parametrically examine the microcontinent characteristics (size, crustal thickness, thermal gradient, and rheology), oceanic plate age, and convergence rates. Results suggest that moderate-size (>= 300 km) microcontinents can nucleate subduction initiation at the junction between continental and oceanic plates. A large part of the microcontinent would be dragged into the subduction zone, and the subsequent asthenosphere upwellings would incorporate part of the microcontinent. Our numerical models add a new hypothetical scenario for subduction initiation, especially for those places where a young and buoyant plate subducts beneath an older and denser oceanic plate. Moreover, they can explain the origin of exotic crust materials and ultrahigh-pressure minerals in supra-subduction zone ophiolites.
WOS关键词PODIFORM CHROMITITES ; LUOBUSA OPHIOLITE ; CRUSTAL ZIRCONS ; UPPER-MANTLE ; TECTONICS ; EVOLUTION ; ISLAND ; SEA ; ARC
资助项目Strategic Priority Research Program of the Chinese Academy of Sciences[XDB 41000000] ; National Natural Science Foundation of China[42272262] ; National Natural Science Foundation of China[42204099] ; National Natural Science Foundation of China[42172241] ; Spanish Agency of Research AEI (Ramon y Cajal fellowship)[RyC2019-028244-I] ; Spanish Agency of Research AEI (Ramon y Cajal fellowship)[PID2021-128801NA-I00]
WOS研究方向Geology
语种英语
出版者GEOLOGICAL SOC AMER, INC
WOS记录号WOS:001068779700011
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Spanish Agency of Research AEI (Ramon y Cajal fellowship) ; Spanish Agency of Research AEI (Ramon y Cajal fellowship) ; Spanish Agency of Research AEI (Ramon y Cajal fellowship) ; Spanish Agency of Research AEI (Ramon y Cajal fellowship) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Spanish Agency of Research AEI (Ramon y Cajal fellowship) ; Spanish Agency of Research AEI (Ramon y Cajal fellowship) ; Spanish Agency of Research AEI (Ramon y Cajal fellowship) ; Spanish Agency of Research AEI (Ramon y Cajal fellowship) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Spanish Agency of Research AEI (Ramon y Cajal fellowship) ; Spanish Agency of Research AEI (Ramon y Cajal fellowship) ; Spanish Agency of Research AEI (Ramon y Cajal fellowship) ; Spanish Agency of Research AEI (Ramon y Cajal fellowship) ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Spanish Agency of Research AEI (Ramon y Cajal fellowship) ; Spanish Agency of Research AEI (Ramon y Cajal fellowship) ; Spanish Agency of Research AEI (Ramon y Cajal fellowship) ; Spanish Agency of Research AEI (Ramon y Cajal fellowship)
源URL[http://ir.iggcas.ac.cn/handle/132A11/110841]  
专题地质与地球物理研究所_中国科学院矿产资源研究重点实验室
地质与地球物理研究所_岩石圈演化国家重点实验室
通讯作者Yan, Zhiyong
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
4.Univ Granada, Dept Geodynam, Granada 18071, Spain
5.Tohoku Univ, Frontier Res Inst Interdisciplinary Sci, Sendai 9808578, Japan
6.Shanghai Jiao Tong Univ, Sch Oceanog, Shanghai 200030, Peoples R China
推荐引用方式
GB/T 7714		 Zhu, Mingshuai,Yan, Zhiyong,Pastor-Galan, Daniel,et al. Do microcontinents nucleate subduction initiation?[J]. GEOLOGY,2023,51(7):668-672.
APA Zhu, Mingshuai.,Yan, Zhiyong.,Pastor-Galan, Daniel.,Chen, Lin.,Miao, Laicheng.,...&Yang, Shunhu.(2023).Do microcontinents nucleate subduction initiation?.GEOLOGY,51(7),668-672.
MLA Zhu, Mingshuai,et al."Do microcontinents nucleate subduction initiation?".GEOLOGY 51.7(2023):668-672.

入库方式： OAI收割

来源：地质与地球物理研究所

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