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Intraplate volcanism triggered by bursts in slab flux

Long-lived, widespread intraplate volcanism without age progression is one of the most controversial features of plate tectonics. Previously proposed edge-driven convection, asthenospheric shear, and lithospheric detachment fail to explain the ~5000-km-wide intraplate volcanic province from eastern...

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Autores principales: Mather, Ben R., Müller, R. Dietmar, Seton, Maria, Ruttor, Saskia, Nebel, Oliver, Mortimer, Nick
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Association for the Advancement of Science 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7744089/
https://www.ncbi.nlm.nih.gov/pubmed/33328233
http://dx.doi.org/10.1126/sciadv.abd0953
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author Mather, Ben R.
Müller, R. Dietmar
Seton, Maria
Ruttor, Saskia
Nebel, Oliver
Mortimer, Nick
author_facet Mather, Ben R.
Müller, R. Dietmar
Seton, Maria
Ruttor, Saskia
Nebel, Oliver
Mortimer, Nick
author_sort Mather, Ben R.
collection PubMed
description Long-lived, widespread intraplate volcanism without age progression is one of the most controversial features of plate tectonics. Previously proposed edge-driven convection, asthenospheric shear, and lithospheric detachment fail to explain the ~5000-km-wide intraplate volcanic province from eastern Australia to Zealandia. We model the subducted slab volume over 100 million years and find that slab flux drives volcanic eruption frequency, indicating stimulation of an enriched mantle transition zone reservoir. Volcanic isotope geochemistry allows us to distinguish a high-μ (HIMU) reservoir [>1 billion years (Ga) old] in the slab-poor south, from a northern EM1/EM2 reservoir, reflecting a more recent voluminous influx of oceanic lithosphere into the mantle transition zone. We provide a unified theory linking plate boundary and slab volume reconstructions to upper mantle reservoirs and intraplate volcano geochemistry.
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spelling pubmed-77440892021-01-04 Intraplate volcanism triggered by bursts in slab flux Mather, Ben R. Müller, R. Dietmar Seton, Maria Ruttor, Saskia Nebel, Oliver Mortimer, Nick Sci Adv Research Articles Long-lived, widespread intraplate volcanism without age progression is one of the most controversial features of plate tectonics. Previously proposed edge-driven convection, asthenospheric shear, and lithospheric detachment fail to explain the ~5000-km-wide intraplate volcanic province from eastern Australia to Zealandia. We model the subducted slab volume over 100 million years and find that slab flux drives volcanic eruption frequency, indicating stimulation of an enriched mantle transition zone reservoir. Volcanic isotope geochemistry allows us to distinguish a high-μ (HIMU) reservoir [>1 billion years (Ga) old] in the slab-poor south, from a northern EM1/EM2 reservoir, reflecting a more recent voluminous influx of oceanic lithosphere into the mantle transition zone. We provide a unified theory linking plate boundary and slab volume reconstructions to upper mantle reservoirs and intraplate volcano geochemistry. American Association for the Advancement of Science 2020-12-16 /pmc/articles/PMC7744089/ /pubmed/33328233 http://dx.doi.org/10.1126/sciadv.abd0953 Text en Copyright © 2020 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). https://creativecommons.org/licenses/by-nc/4.0/ https://creativecommons.org/licenses/by-nc/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (https://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.
spellingShingle Research Articles
Mather, Ben R.
Müller, R. Dietmar
Seton, Maria
Ruttor, Saskia
Nebel, Oliver
Mortimer, Nick
Intraplate volcanism triggered by bursts in slab flux
title Intraplate volcanism triggered by bursts in slab flux
title_full Intraplate volcanism triggered by bursts in slab flux
title_fullStr Intraplate volcanism triggered by bursts in slab flux
title_full_unstemmed Intraplate volcanism triggered by bursts in slab flux
title_short Intraplate volcanism triggered by bursts in slab flux
title_sort intraplate volcanism triggered by bursts in slab flux
topic Research Articles
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7744089/
https://www.ncbi.nlm.nih.gov/pubmed/33328233
http://dx.doi.org/10.1126/sciadv.abd0953
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