气候变化领域集成服务门户(CCPortal): Widespread volcanism in the Greenland–North Atlantic region explained by the Iceland plume

CCPortal

DOI	10.1038/s41561-018-0251-0
	Widespread volcanism in the Greenland–North Atlantic region explained by the Iceland plume
	Steinberger B.; Bredow E.; Lebedev S.; Schaeffer A.; Torsvik T.H.
发表日期	2019
ISSN	17520894
卷号	12 期号:1
英文摘要	In the classical concept, a hotspot track is a line of volcanics formed as a plate moves over a stationary mantle plume. Defying this concept, intraplate volcanism in Greenland and the North Atlantic region occurred simultaneously over a wide area, particularly around 60 million years ago, showing no resemblance to a hotspot track. Here, we show that most of this volcanism can nonetheless be explained solely by the Iceland plume interacting with seafloor spreading ridges, global mantle flow and a lithosphere (the outermost rigid layer of the Earth) with strongly variable thickness. An east–west corridor of thinned lithosphere across central Greenland, as inferred from new, highly resolved tomographic images, could have formed as Greenland moved westward over the Iceland plume between 90 and 60 million years ago. Our numerical geodynamic model demonstrates how plume material may have accumulated in this corridor and in areas east and west of Greenland. Simultaneous plume-related volcanic activities starting about 62 million years ago on either side of Greenland could occur where and when the lithosphere was thin enough due to continental rifting and seafloor spreading, possibly long after the plume reached the base of the lithosphere. © 2018, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	geodynamics; hot spot; lithosphere; mantle plume; plume; rifting; seafloor; seafloor spreading; submarine ridge; volcanism; Arctic; Atlantic Ocean; Atlantic Ocean (North); Greenland; Iceland
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/124745
作者单位	Section 2.5 Geodynamic Modelling, GFZ German Research Centre for Geosciences, Potsdam, Germany; Centre for Earth Evolution and Dynamics (CEED), University of Oslo, Oslo, Norway; Dublin Institute for Advanced Studies, School of Cosmic Physics, Geophysics Section, Dublin, Ireland; Pacific Geoscience Centre, Geological Survey of Canada, Sidney, BC, Canada; Department of Earth Sciences, University of Ottawa, Ottawa, Canada; Geological Survey of Norway (NGU), Trondheim, Norway; School of Geosciences, University of the Witwatersrand, Wits, South Africa; Institute of Geosciences, Christian-Albrechts-Universität zu Kiel, Kiel, Germany
推荐引用方式 GB/T 7714	Steinberger B.,Bredow E.,Lebedev S.,等. Widespread volcanism in the Greenland–North Atlantic region explained by the Iceland plume[J],2019,12(1).
APA	Steinberger B.,Bredow E.,Lebedev S.,Schaeffer A.,&Torsvik T.H..(2019).Widespread volcanism in the Greenland–North Atlantic region explained by the Iceland plume.Nature Geoscience,12(1).
MLA	Steinberger B.,et al."Widespread volcanism in the Greenland–North Atlantic region explained by the Iceland plume".Nature Geoscience 12.1(2019).