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Effects of multi-seamount subduction on accretionary wedge deformation: Insights from analogue modelling

文献类型：期刊论文

作者Wang, Chunyang2,3,4; Ding, Weiwei2,3,4,5; Schellart, Wouter P.1; Li, Jiabiao2,3; Dong, Chongzhi2,3,4; Fang, Yinxia2,3; Hao, Tianyao2,3,6; Tong, Zhengyi7
刊名JOURNAL OF GEODYNAMICS
出版日期2021-05-01
卷号145页码:13
关键词Analogue modelling Multi-seamount subduction Accretionary wedge Deformation processes Duplex structure
ISSN号0264-3707
DOI10.1016/j.jog.2021.101842
英文摘要Deformation patterns caused by the subduction of a single seamount or aseismic ridge have been well studied in analogue and numerical models. However, the effects of sequential multi-seamount subduction on accretionary wedge deformation have rarely been investigated in details. We performed a series of analogue modelling experiments of sequential subduction involving two seamounts of variable shape, spacing and rheological properties of strata to better understand the deformation mechanisms of an accretionary wedge with multi-seamount subduction. The results demonstrate that a seamount significantly hinders the seaward propagation of the accretionary wedge and facilitates lateral propagation. Two structural quiet zones form at the leading and trailing edges of the subducted seamount in the early stage of collision. As the seamount deeply penetrates into the wedge, the structural quiet zone in the leading edge is remoulded by a duplex structure, which may help the upward transport of deep subducted sediments back into the shallow area. Comparatively, the structural quiet zone in the trailing edge remains undeformed because it is situated in the stress shadow of the seamount. Deformation of the strata between two subducting seamounts may occur by thrusts laterally propagating into the seamount gap, which is facilitated by the de ' collement layer. The modelling results provide insights into the complex deformation mechanisms related to seamounts collision observed in the accretionary wedge offshore from the Costa Rica margin.
WOS关键词FINITE-ELEMENT MODELS ; COSTA-RICA ; RIDGE SUBDUCTION ; STRUCTURAL EVOLUTION ; THRUST BELTS ; FORE-ARCS ; ZONE ; GEOMETRY ; EROSION ; DYNAMICS
资助项目National Natural Science Foundation of China[41606051] ; National Natural Science Foundation of China[42076080] ; National Natural Science Foundation of China[91858214] ; National Natural Science Foundation of China[41890811] ; National Natural Science Foundation of China[42025601] ; Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)[311020018] ; Key Laboratory of Ocean and Marginal Sea Geology, Chinese Academy of Sciences[OMG1703] ; Dutch National Science Foundation (NWO)[016.VICI.170.110]
WOS研究方向Geochemistry & Geophysics
语种英语
WOS记录号WOS:000663527200001
出版者PERGAMON-ELSEVIER SCIENCE LTD
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) ; Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) ; Key Laboratory of Ocean and Marginal Sea Geology, Chinese Academy of Sciences ; Key Laboratory of Ocean and Marginal Sea Geology, Chinese Academy of Sciences ; Dutch National Science Foundation (NWO) ; Dutch National Science Foundation (NWO) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) ; Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) ; Key Laboratory of Ocean and Marginal Sea Geology, Chinese Academy of Sciences ; Key Laboratory of Ocean and Marginal Sea Geology, Chinese Academy of Sciences ; Dutch National Science Foundation (NWO) ; Dutch National Science Foundation (NWO) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) ; Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) ; Key Laboratory of Ocean and Marginal Sea Geology, Chinese Academy of Sciences ; Key Laboratory of Ocean and Marginal Sea Geology, Chinese Academy of Sciences ; Dutch National Science Foundation (NWO) ; Dutch National Science Foundation (NWO) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) ; Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) ; Key Laboratory of Ocean and Marginal Sea Geology, Chinese Academy of Sciences ; Key Laboratory of Ocean and Marginal Sea Geology, Chinese Academy of Sciences ; Dutch National Science Foundation (NWO) ; Dutch National Science Foundation (NWO)
源URL[http://ir.iggcas.ac.cn/handle/132A11/102065]  
专题地质与地球物理研究所_中国科学院油气资源研究重点实验室
通讯作者Wang, Chunyang; Ding, Weiwei
作者单位1.Vrije Univ Amsterdam, Dept Earth Sci, NL-1081 HV Amsterdam, Netherlands
2.Minist Nat Resources, Key Lab Submarine Geosci, Hangzhou 310012, Peoples R China
3.Minist Nat Resources, Inst Oceanog 2, Hangzhou 310012, Peoples R China
4.Southern Marine Sci & Engn Guangdong Lab, Zhuhai 519080, Peoples R China
5.Shanghai Jiao Tong Univ, Sch Oceanog, Shanghai 200240, Peoples R China
6.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Beijing 100029, Peoples R China
7.Zhejiang Univ, Sch Earth Sci, Hangzhou 310027, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Chunyang,Ding, Weiwei,Schellart, Wouter P.,et al. Effects of multi-seamount subduction on accretionary wedge deformation: Insights from analogue modelling[J]. JOURNAL OF GEODYNAMICS,2021,145:13.
APA Wang, Chunyang.,Ding, Weiwei.,Schellart, Wouter P..,Li, Jiabiao.,Dong, Chongzhi.,...&Tong, Zhengyi.(2021).Effects of multi-seamount subduction on accretionary wedge deformation: Insights from analogue modelling.JOURNAL OF GEODYNAMICS,145,13.
MLA Wang, Chunyang,et al."Effects of multi-seamount subduction on accretionary wedge deformation: Insights from analogue modelling".JOURNAL OF GEODYNAMICS 145(2021):13.

入库方式： OAI收割

来源：地质与地球物理研究所

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