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  4. 岩石圈演化国家重点实验室
Late Eocene subduction initiation of the Indian Ocean in the North Sulawesi Arc, Indonesia, induced by abrupt Australian plate acceleration

文献类型：期刊论文

作者Zhang, Xiaoran R.1; Huang, Tse-Ning6; Chung, Sun-Lin4,6; Maulana, Adi5; Mawaleda, Musri5; Tien, Chia-Yu2; Lee, Hao-Yang4; Liu, Ping-Ping3
刊名LITHOS
出版日期2022-08-01
卷号422页码:14
ISSN号0024-4937
关键词Subduction initiation Plate acceleration Zircon U-Pb-Hf North Sulawesi Arc Indonesia
DOI10.1016/j.lithos.2022.106742
英文摘要Subduction of oceanic lithosphere is the main driving force of plate tectonics on Earth, yet, how subduction began (i.e. subduction initiation; SI) remains enigmatic, due to limited SI examples. Here, we report new whole-rock geochemical and zircon U-Pb-Hf isotopic data of arc magmatism from the North Sulawesi Arc, Indonesia, to constrain the petrogenesis, magmatic tempo, and tectonic setting, as well as the timing and trigger of SI. Zircon U-Pb dating yielded crystallization ages of-29.7-16.7 Ma for parental magmas, which are calc-alkaline I-type in nature and show typical subduction-related signatures. Geochemical data and high positive zircon epsilon Hf(t) values indicate magma generation by partial melting of preexisting mafic basement rocks. Our new results, together with literature data, allow the identification of an Indian SI in the Late Eocene, as evidenced by the last vanishing of BAB-type mafic basement rocks at-37 Ma and the first appearance of calc-alkaline felsic arc magmatism at-30 Ma in the North Sulawesi Arc, as well as-36-32 Ma ophiolite and-34-29 Ma metamorphic sole in the nearby East Sulawesi Ophiolite. Such a temporal duration (maximum of-7 Ma) from SI to typical arc magmatism is identical to that (-8-7 Ma) of the Izu-Bonin-Mariana system. Given the contemporaneousness of a sudden increase (from-4-5 to-8-9 cm/y) in northward drifting rate of the Australian plate, we propose that Late Eocene Indian SI was probably linked to the sharp Australian plate ac-celeration. Such plate reorganization may have played a significant role in driving SI in Earth history.
WOS关键词A-TYPE GRANITES ; GEOCHEMICAL CHARACTERISTICS ; GEODYNAMIC EVOLUTION ; METAMORPHIC COMPLEX ; SEMAIL OPHIOLITE ; VOLCANIC-ROCKS ; NW SULAWESI ; ISLAND-ARC ; ORIGIN ; COLLISION
资助项目National Natural Science Foundation of China[42172244] ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences
WOS研究方向Geochemistry & Geophysics ; Mineralogy
语种英语
出版者ELSEVIER
WOS记录号WOS:000807568000001
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; Pioneer Hundred Talents 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 ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; Pioneer Hundred Talents 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 ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; Pioneer Hundred Talents 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 ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences ; Pioneer Hundred Talents Program of the Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/105996]  
专题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Zhang, Xiaoran R.; Chung, Sun-Lin
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China
2.Univ Cambridge, Dept Earth Sci, Cambridge, England
3.Peking Univ, Sch Earth & Space Sci, Key Lab Orogen Belts & Crustal Evolut, Beijing, Peoples R China
4.Acad Sinica, Inst Earth Sci, Taipei, Taiwan
5.Hasanuddin Univ, Dept Geol, Makassar, Indonesia
6.Natl Taiwan Univ, Dept Geosci, Taipei, Taiwan
推荐引用方式
GB/T 7714		 Zhang, Xiaoran R.,Huang, Tse-Ning,Chung, Sun-Lin,et al. Late Eocene subduction initiation of the Indian Ocean in the North Sulawesi Arc, Indonesia, induced by abrupt Australian plate acceleration[J]. LITHOS,2022,422:14.
APA Zhang, Xiaoran R..,Huang, Tse-Ning.,Chung, Sun-Lin.,Maulana, Adi.,Mawaleda, Musri.,...&Liu, Ping-Ping.(2022).Late Eocene subduction initiation of the Indian Ocean in the North Sulawesi Arc, Indonesia, induced by abrupt Australian plate acceleration.LITHOS,422,14.
MLA Zhang, Xiaoran R.,et al."Late Eocene subduction initiation of the Indian Ocean in the North Sulawesi Arc, Indonesia, induced by abrupt Australian plate acceleration".LITHOS 422(2022):14.

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来源：地质与地球物理研究所

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