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The origin of the Canary Island Seamount Province - New ages of old seamounts

The Canary Island Seamount Province forms a scattered hotspot track on the Atlantic ocean floor ~1300 km long and ~350 km wide, perpendicular to lithospheric fractures, and parallel to the NW African continental margin. New (40)Ar/(39)Ar datings show that seamount ages vary from 133 Ma to 0.2 Ma in...

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Autor principal: van den Bogaard, Paul
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3707084/
https://www.ncbi.nlm.nih.gov/pubmed/23838703
http://dx.doi.org/10.1038/srep02107
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author van den Bogaard, Paul
author_facet van den Bogaard, Paul
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description The Canary Island Seamount Province forms a scattered hotspot track on the Atlantic ocean floor ~1300 km long and ~350 km wide, perpendicular to lithospheric fractures, and parallel to the NW African continental margin. New (40)Ar/(39)Ar datings show that seamount ages vary from 133 Ma to 0.2 Ma in the central archipelago, and from 142 Ma to 91 Ma in the southwest. Combining (40)Ar/(39)Ar ages with plate tectonic reconstructions, I find that the temporal and spatial distribution of seamounts is irreconcilable with a deep fixed mantle plume origin, or derivation from passive mantle upwelling beneath a mid-ocean ridge. I conclude that shallow mantle upwelling beneath the Atlantic Ocean basin off the NW African continental lithosphere flanks produced recurrent melting anomalies and seamounts from the Late Jurassic to Recent, nominating the Canary Island Seamount Province as oldest hotspot track in the Atlantic Ocean, and most long-lived preserved on earth.
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spelling pubmed-37070842013-07-10 The origin of the Canary Island Seamount Province - New ages of old seamounts van den Bogaard, Paul Sci Rep Article The Canary Island Seamount Province forms a scattered hotspot track on the Atlantic ocean floor ~1300 km long and ~350 km wide, perpendicular to lithospheric fractures, and parallel to the NW African continental margin. New (40)Ar/(39)Ar datings show that seamount ages vary from 133 Ma to 0.2 Ma in the central archipelago, and from 142 Ma to 91 Ma in the southwest. Combining (40)Ar/(39)Ar ages with plate tectonic reconstructions, I find that the temporal and spatial distribution of seamounts is irreconcilable with a deep fixed mantle plume origin, or derivation from passive mantle upwelling beneath a mid-ocean ridge. I conclude that shallow mantle upwelling beneath the Atlantic Ocean basin off the NW African continental lithosphere flanks produced recurrent melting anomalies and seamounts from the Late Jurassic to Recent, nominating the Canary Island Seamount Province as oldest hotspot track in the Atlantic Ocean, and most long-lived preserved on earth. Nature Publishing Group 2013-07-01 /pmc/articles/PMC3707084/ /pubmed/23838703 http://dx.doi.org/10.1038/srep02107 Text en Copyright © 2013, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/
spellingShingle Article
van den Bogaard, Paul
The origin of the Canary Island Seamount Province - New ages of old seamounts
title The origin of the Canary Island Seamount Province - New ages of old seamounts
title_full The origin of the Canary Island Seamount Province - New ages of old seamounts
title_fullStr The origin of the Canary Island Seamount Province - New ages of old seamounts
title_full_unstemmed The origin of the Canary Island Seamount Province - New ages of old seamounts
title_short The origin of the Canary Island Seamount Province - New ages of old seamounts
title_sort origin of the canary island seamount province - new ages of old seamounts
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3707084/
https://www.ncbi.nlm.nih.gov/pubmed/23838703
http://dx.doi.org/10.1038/srep02107
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