气候变化领域集成服务门户(CCPortal): A record of plume-induced plate rotation triggering subduction initiation

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DOI	10.1038/s41561-021-00780-7
	A record of plume-induced plate rotation triggering subduction initiation
	van Hinsbergen D.J.J.; Steinberger B.; Guilmette C.; Maffione M.; Gürer D.; Peters K.; Plunder A.; McPhee P.J.; Gaina C.; Advokaat E.L.; Vissers R.L.M.; Spakman W.
发表日期	2021
ISSN	17520894
起始页码	626
结束页码	630
卷号	14 期号:8
英文摘要	The formation of a global network of plate boundaries surrounding a mosaic of lithospheric fragments was a key step in the emergence of Earth’s plate tectonics. So far, propositions for plate boundary formation are regional in nature; how plate boundaries are created over thousands of kilometres in geologically short periods remains elusive. Here we show from geological observations that a >12,000-km-long plate boundary formed between the Indian and African plates around 105 Myr ago. This boundary comprised subduction segments from the eastern Mediterranean region to a newly established India–Africa rotation pole in the west Indian Ocean, where it transitioned into a ridge between India and Madagascar. We identify coeval mantle plume rise below Madagascar–India as the only viable trigger of this plate rotation. For this, we provide a proof of concept by torque balance modelling, which reveals that the Indian and African cratonic keels were important in determining plate rotation and subduction initiation in response to the spreading plume head. Our results show that plumes may provide a non-plate-tectonic mechanism for large-plate rotation, initiating divergent and convergent plate boundaries far away from the plume head. We suggest that this mechanism may be an underlying cause of the emergence of modern plate tectonics. © 2021, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206970
作者单位	Department of Earth Sciences, Utrecht University, Utrecht, Netherlands; GFZ German Research Centre for Geosciences, Potsdam, Germany; Centre of Earth Evolution and Dynamics (CEED), University of Oslo, Oslo, Norway; Département de Géologie et de Génie Géologique, Université Laval, Quebec, QC, Canada; School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, United Kingdom; School of Earth and Environmental Sciences, University of Queensland, St Lucia, QLD, Australia; BRGM, Orléans, France; School for Earth and Atmospheric Sciences, Queensland University of Technology, Brisbane, QLD, Australia
推荐引用方式 GB/T 7714	van Hinsbergen D.J.J.,Steinberger B.,Guilmette C.,et al. A record of plume-induced plate rotation triggering subduction initiation[J],2021,14(8).
APA	van Hinsbergen D.J.J..,Steinberger B..,Guilmette C..,Maffione M..,Gürer D..,...&Spakman W..(2021).A record of plume-induced plate rotation triggering subduction initiation.Nature Geoscience,14(8).
MLA	van Hinsbergen D.J.J.,et al."A record of plume-induced plate rotation triggering subduction initiation".Nature Geoscience 14.8(2021).