Institutional Repository of Key Laboratory of Petroleum Resource Research, Chinese Academy of Sciences
| The causal mechanism of the Sangihe Forearc Thrust, Molucca Sea, northeast Indonesia, from numerical simulation | |
| Fang, Gui1; Zhang, Jian1; Hao, Tianyao1,2,3,4; Dong, Miao1,2; Jiang, Chenghao1; He, Yubei1 | |
| 2022-10-01 | |
| Source Publication | JOURNAL OF ASIAN EARTH SCIENCES
 |
| ISSN | 1367-9120 |
| Volume | 237Pages:11 |
| Abstract | 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. |
| Keyword | Forearc collision Sangihe Arc Halmahera Arc Forearc thrusting Numerical modeling |
| DOI | 10.1016/j.jseaes.2022.105350 |
| Funding Organization | 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 |
| WOS Keyword | EASTERN INDONESIA ; SUBDUCTION ; DEFORMATION ; EVOLUTION ; BENEATH ; REGION ; RECONSTRUCTIONS ; COLLISION ; HALMAHERA ; INSIGHTS |
| Language | 英语 |
| Funding Project | 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] |
| Funding Organization | 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 |
| WOS Research Area | Geology |
| WOS Subject | Geosciences, Multidisciplinary |
| WOS ID | WOS:000835655200001 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.iggcas.ac.cn/handle/132A11/108452 |
| Collection | 油气资源研究院重点实验室 |
| Corresponding Author | Zhang, Jian |
| Affiliation | 1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resource Res, Beijing 100029, Peoples R China 3.Minist Nat Resources, Inst Oceanol 2, Key Lab Submarine Geosci, Hangzhou 310012, Peoples R China 4.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China |
| Recommended Citation 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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