Pacific plate motion change caused the Hawaiian-Emperor Bend

A conspicuous 60° bend of the Hawaiian-Emperor Chain in the north-western Pacific Ocean has variously been interpreted as the result of an abrupt Pacific plate motion change in the Eocene (∼47 Ma), a rapid southward drift of the Hawaiian hotspot before the formation of the bend, or a combination of...

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Autores principales: Torsvik, Trond H., Doubrovine, Pavel V., Steinberger, Bernhard, Gaina, Carmen, Spakman, Wim, Domeier, Mathew
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5465363/
https://www.ncbi.nlm.nih.gov/pubmed/28580950
http://dx.doi.org/10.1038/ncomms15660
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author Torsvik, Trond H.
Doubrovine, Pavel V.
Steinberger, Bernhard
Gaina, Carmen
Spakman, Wim
Domeier, Mathew
author_facet Torsvik, Trond H.
Doubrovine, Pavel V.
Steinberger, Bernhard
Gaina, Carmen
Spakman, Wim
Domeier, Mathew
author_sort Torsvik, Trond H.
collection PubMed
description A conspicuous 60° bend of the Hawaiian-Emperor Chain in the north-western Pacific Ocean has variously been interpreted as the result of an abrupt Pacific plate motion change in the Eocene (∼47 Ma), a rapid southward drift of the Hawaiian hotspot before the formation of the bend, or a combination of these two causes. Palaeomagnetic data from the Emperor Seamounts prove ambiguous for constraining the Hawaiian hotspot drift, but mantle flow modelling suggests that the hotspot drifted 4–9° south between 80 and 47 Ma. Here we demonstrate that southward hotspot drift cannot be a sole or dominant mechanism for formation of the Hawaiian-Emperor Bend (HEB). While southward hotspot drift has resulted in more northerly positions of the Emperor Seamounts as they are observed today, formation of the HEB cannot be explained without invoking a prominent change in the direction of Pacific plate motion around 47 Ma.
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spelling pubmed-54653632017-06-22 Pacific plate motion change caused the Hawaiian-Emperor Bend Torsvik, Trond H. Doubrovine, Pavel V. Steinberger, Bernhard Gaina, Carmen Spakman, Wim Domeier, Mathew Nat Commun Article A conspicuous 60° bend of the Hawaiian-Emperor Chain in the north-western Pacific Ocean has variously been interpreted as the result of an abrupt Pacific plate motion change in the Eocene (∼47 Ma), a rapid southward drift of the Hawaiian hotspot before the formation of the bend, or a combination of these two causes. Palaeomagnetic data from the Emperor Seamounts prove ambiguous for constraining the Hawaiian hotspot drift, but mantle flow modelling suggests that the hotspot drifted 4–9° south between 80 and 47 Ma. Here we demonstrate that southward hotspot drift cannot be a sole or dominant mechanism for formation of the Hawaiian-Emperor Bend (HEB). While southward hotspot drift has resulted in more northerly positions of the Emperor Seamounts as they are observed today, formation of the HEB cannot be explained without invoking a prominent change in the direction of Pacific plate motion around 47 Ma. Nature Publishing Group 2017-06-05 /pmc/articles/PMC5465363/ /pubmed/28580950 http://dx.doi.org/10.1038/ncomms15660 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Torsvik, Trond H.
Doubrovine, Pavel V.
Steinberger, Bernhard
Gaina, Carmen
Spakman, Wim
Domeier, Mathew
Pacific plate motion change caused the Hawaiian-Emperor Bend
title Pacific plate motion change caused the Hawaiian-Emperor Bend
title_full Pacific plate motion change caused the Hawaiian-Emperor Bend
title_fullStr Pacific plate motion change caused the Hawaiian-Emperor Bend
title_full_unstemmed Pacific plate motion change caused the Hawaiian-Emperor Bend
title_short Pacific plate motion change caused the Hawaiian-Emperor Bend
title_sort pacific plate motion change caused the hawaiian-emperor bend
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5465363/
https://www.ncbi.nlm.nih.gov/pubmed/28580950
http://dx.doi.org/10.1038/ncomms15660
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