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The causal mechanism of the Sangihe Forearc Thrust, Molucca Sea, northeast Indonesia, from numerical simulation

文献类型：期刊论文

作者Fang, Gui4; Zhang, Jian4; Hao, Tianyao1,2,3,4; Dong, Miao3,4; Jiang, Chenghao4; He, Yubei4
刊名JOURNAL OF ASIAN EARTH SCIENCES
出版日期2022-10-01
卷号237页码:11
ISSN号1367-9120
关键词Forearc collision Sangihe Arc Halmahera Arc Forearc thrusting Numerical modeling
DOI10.1016/j.jseaes.2022.105350
英文摘要The Molucca Sea subduction zone contains an interesting geological phenomenon: the Sangihe Forearc Thrust (SFT). At 10 Ma, divergent double subduction (DDS) in the Molucca Sea was initiated, resulting in the convergence of the Sangihe and Halmahera forearcs, and their subsequent collision at 2 Ma. Associated with this collision, the Sangihe Forearc was thrust over the Halmahera Forearc. Currently, the causal mechanism asso-ciated with the SFT remains unknown. Here, we simulate the structural and morphological characteristics of forearc collision and thrusting within this DDS zone under different conditions, calculate the temperature structures and characteristics of magmatic activity under the Sangihe and Halmahera arcs, and explore the causal mechanism of the SFT. Our results demonstrate that plate boundary stress and volcanic loading are two non -negligible factors affecting the forearc thrust. We identify different causal mechanisms for the SFT in the northern and southern parts of the asymmetric DDS zone in the Molucca Sea. In the northern part of the DDS zone, the SFT is primarily caused by plate boundary stress, which is mainly generated by the southwestward subduction of the Philippine Sea Plate. In the southern part of the DDS zone, the SFT is mainly caused by the effects of differential volcanic loading. The effect of volcanic loading on the Halmahera Forearc is noticeably stronger than that on Sangihe Forearc, resulting in more severe vertical deformation and subsidence of the former. Finally, the less vertically-deformed Sangihe Forearc was thrust over the Halmahera Forearc under the action of horizontal arc-arc collision extrusion.
WOS关键词EASTERN INDONESIA ; SUBDUCTION ; DEFORMATION ; EVOLUTION ; BENEATH ; REGION ; RECONSTRUCTIONS ; COLLISION ; HALMAHERA ; INSIGHTS
资助项目National Natural Science Foundation of China[42176052] ; National Natural Science Foundation of China[91858212] ; National Natural Science Foundation of China[41906056] ; Strategic Priority Research Program (B) of Chinese Academy of Sciences[XDB42020104] ; National Science Foundation[EAR -0949446] ; National Science Foundation[EAR -1550901]
WOS研究方向Geology
语种英语
出版者PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号WOS:000835655200001
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program (B) of Chinese Academy of Sciences ; Strategic Priority Research Program (B) of Chinese Academy of Sciences ; National Science Foundation ; National Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program (B) of Chinese Academy of Sciences ; Strategic Priority Research Program (B) of Chinese Academy of Sciences ; National Science Foundation ; National Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program (B) of Chinese Academy of Sciences ; Strategic Priority Research Program (B) of Chinese Academy of Sciences ; National Science Foundation ; National Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Strategic Priority Research Program (B) of Chinese Academy of Sciences ; Strategic Priority Research Program (B) of Chinese Academy of Sciences ; National Science Foundation ; National Science Foundation
源URL[http://ir.iggcas.ac.cn/handle/132A11/108452]  
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Zhang, Jian
作者单位1.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
2.Minist Nat Resources, Inst Oceanol 2, Key Lab Submarine Geosci, Hangzhou 310012, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resource Res, Beijing 100029, Peoples R China
4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Fang, Gui,Zhang, Jian,Hao, Tianyao,et al. The causal mechanism of the Sangihe Forearc Thrust, Molucca Sea, northeast Indonesia, from numerical simulation[J]. JOURNAL OF ASIAN EARTH SCIENCES,2022,237:11.
APA Fang, Gui,Zhang, Jian,Hao, Tianyao,Dong, Miao,Jiang, Chenghao,&He, Yubei.(2022).The causal mechanism of the Sangihe Forearc Thrust, Molucca Sea, northeast Indonesia, from numerical simulation.JOURNAL OF ASIAN EARTH SCIENCES,237,11.
MLA Fang, Gui,et al."The causal mechanism of the Sangihe Forearc Thrust, Molucca Sea, northeast Indonesia, from numerical simulation".JOURNAL OF ASIAN EARTH SCIENCES 237(2022):11.

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来源：地质与地球物理研究所

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