Plate convergence in the Indo-Pacific region

doi:10.1007/s00343-020-0146-y

	Plate convergence in the Indo-Pacific region
	Sun, Weidong1,2,3 ; Zhang, Lipeng 1,2; Liao, Renqiang1,3 ; Sun, Saijun 1,2; Li, Congying 1,2; Liu, He 1,2
	2020-07-01
发表期刊	JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN	2096-5508
卷号	38 期号:4 页码:1008-1017
通讯作者	Sun, Weidong(weidongsun@qdio.ac.cn)
摘要	The Indo-Pacific convergence region is the best target to solve the two remaining challenges of the plate tectonics theory, i.e., subduction initiation and the driving force of plate tectonics. Recent studies proposed that the Izu-Bonin subduction initiation belongs to spontaneous initiation, which implies that it started from extension, followed by low angle subduction. Numerical geodynamic modeling suggests that the initiation of plate subduction likely occurred along a transform fault, which put the young spreading ridge in direct contact with old oceanic crust. This, however, does not explain the simultaneous subduction initiation in the west Pacific region in the Cenozoic. Namely, the subduction initiations in the Izu-Bonin- Mariana, the Aleutian, and the Tonga-Kermadec trenches are associated with oceanic crusts of different ages, yet they occurred at roughly the same time, suggesting that they were all triggered by a major change in the Pacific plate. Moreover, low angle subduction induces compression rather than extension, which requires external compression forces. Given that the famous Hawaiian-Emperor bending occurred roughly at the same time with the onset of westward subductions in the west Pacific, we propose that these Cenozoic subductions were initiated by the steering of the Pacific plate, which are classified as induced initiation. Induced subduction initiation usually occurs in young ocean basins, forming single-track subduction. The closures of Neo-Tethys Oceans were likely triggered by plumes in the south, forming northward subductions. Interestingly, the Indian plate kept on moving northward more than 50 Ma after the collision between the Indian and Eurasian continents and the break-off of the subducted oceanic slab attached to it. This strongly suggests that slab pull is not the main driving force of plate tectonics, whereas slab sliding is.
关键词	plate tectonics subduction initiation drifting history Pacific plate Indian plate slab sliding
DOI	10.1007/s00343-020-0146-y
收录类别	SCI
语种	英语
WOS研究方向	Marine & Freshwater Biology ; Oceanography
WOS类目	Limnology ; Oceanography
WOS记录号	WOS:000551529700006
出版者	SCIENCE PRESS
引用统计	被引频次：18[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/168009
专题	深海极端环境与生命过程研究中心
通讯作者	Sun, Weidong
作者单位	1.Chinese Acad Sci, Ctr Deep Sea Res, Inst Oceanol, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao 266237, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位	中国科学院海洋研究所
通讯作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Sun, Weidong,Zhang, Lipeng,Liao, Renqiang,et al. Plate convergence in the Indo-Pacific region[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2020,38(4):1008-1017.
APA	Sun, Weidong,Zhang, Lipeng,Liao, Renqiang,Sun, Saijun,Li, Congying,&Liu, He.(2020).Plate convergence in the Indo-Pacific region.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,38(4),1008-1017.
MLA	Sun, Weidong,et al."Plate convergence in the Indo-Pacific region".JOURNAL OF OCEANOLOGY AND LIMNOLOGY 38.4(2020):1008-1017.

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