The effects of compositional and rheological stratifications on small-scale convection under the oceans: implications for the thickness of the oceanic lithosphere and seafloor flattening

This is the accepted version of the following article: [Afonso, J. C., S. Zlotnik, and M. Fernàndez (2008), Effects of compositional and rheological stratifications on small-scale convection under the oceans: Implications for the thickness of oceanic lithosphere and seafloor flattening, Geophys. Res...

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Detalles Bibliográficos
Autores: Afonso, Juan Carlos, Zlotnik, Sergio|||0000-0001-9674-8950, Fernández, M.
Tipo de recurso: artículo
Fecha de publicación:2008
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/83460
Acceso en línea:https://hdl.handle.net/2117/83460
https://dx.doi.org/10.1029/2008GL035419
Access Level:acceso abierto
Palabra clave:Ocean bottom
Fons marins
Àrees temàtiques de la UPC::Enginyeria civil::Geologia::Oceanografia
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spelling The effects of compositional and rheological stratifications on small-scale convection under the oceans: implications for the thickness of the oceanic lithosphere and seafloor flatteningAfonso, Juan CarlosZlotnik, Sergio|||0000-0001-9674-8950Fernández, M.Ocean bottomFons marinsÀrees temàtiques de la UPC::Enginyeria civil::Geologia::OceanografiaThis is the accepted version of the following article: [Afonso, J. C., S. Zlotnik, and M. Fernàndez (2008), Effects of compositional and rheological stratifications on small-scale convection under the oceans: Implications for the thickness of oceanic lithosphere and seafloor flattening, Geophys. Res. Lett., 35, L20308, doi:10.1029/2008GL035419.], which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1029/2008GL035419/fullPressure-release melting at mid-ocean ridges generate compositional and rheological layering in the oceanic mantle that may control the evolution of the oceanic lithosphere. We use dynamic models coupled with melting and petrological models to explore 1) the influence of this layering on the development of small-scale convection under the oceans, 2) its role in determining the thickness of oceanic lithosphere, and 3) its feasibility as responsible for the deviations of seafloor and surface heat flow from predictions by conductive models in mature oceanic lithosphere. Here we show that the existence of small-scale convection is entirely compatible with experimental creep parameters and flow laws, and that the viscosity stratification due to melt extraction (i.e., H2O removal) is the main factor controlling the plate's thermal evolution, its asymptotic thickness, and the flattening of seafloor and surface heat flow at ages ¿70 Ma. The effects of Al-rich phase transitions and compositional layering are minor.Peer Reviewed20082008-10-0120162016-02-25journal articlehttp://purl.org/coar/resource_type/c_6501AMhttp://purl.org/coar/version/c_ab4af688f83e57aainfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/83460https://dx.doi.org/10.1029/2008GL035419reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/834602026-05-27T15:37:01Z
dc.title.none.fl_str_mv The effects of compositional and rheological stratifications on small-scale convection under the oceans: implications for the thickness of the oceanic lithosphere and seafloor flattening
title The effects of compositional and rheological stratifications on small-scale convection under the oceans: implications for the thickness of the oceanic lithosphere and seafloor flattening
spellingShingle The effects of compositional and rheological stratifications on small-scale convection under the oceans: implications for the thickness of the oceanic lithosphere and seafloor flattening
Afonso, Juan Carlos
Ocean bottom
Fons marins
Àrees temàtiques de la UPC::Enginyeria civil::Geologia::Oceanografia
title_short The effects of compositional and rheological stratifications on small-scale convection under the oceans: implications for the thickness of the oceanic lithosphere and seafloor flattening
title_full The effects of compositional and rheological stratifications on small-scale convection under the oceans: implications for the thickness of the oceanic lithosphere and seafloor flattening
title_fullStr The effects of compositional and rheological stratifications on small-scale convection under the oceans: implications for the thickness of the oceanic lithosphere and seafloor flattening
title_full_unstemmed The effects of compositional and rheological stratifications on small-scale convection under the oceans: implications for the thickness of the oceanic lithosphere and seafloor flattening
title_sort The effects of compositional and rheological stratifications on small-scale convection under the oceans: implications for the thickness of the oceanic lithosphere and seafloor flattening
dc.creator.none.fl_str_mv Afonso, Juan Carlos
Zlotnik, Sergio|||0000-0001-9674-8950
Fernández, M.
author Afonso, Juan Carlos
author_facet Afonso, Juan Carlos
Zlotnik, Sergio|||0000-0001-9674-8950
Fernández, M.
author_role author
author2 Zlotnik, Sergio|||0000-0001-9674-8950
Fernández, M.
author2_role author
author
dc.subject.none.fl_str_mv Ocean bottom
Fons marins
Àrees temàtiques de la UPC::Enginyeria civil::Geologia::Oceanografia
topic Ocean bottom
Fons marins
Àrees temàtiques de la UPC::Enginyeria civil::Geologia::Oceanografia
description This is the accepted version of the following article: [Afonso, J. C., S. Zlotnik, and M. Fernàndez (2008), Effects of compositional and rheological stratifications on small-scale convection under the oceans: Implications for the thickness of oceanic lithosphere and seafloor flattening, Geophys. Res. Lett., 35, L20308, doi:10.1029/2008GL035419.], which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1029/2008GL035419/full
publishDate 2008
dc.date.none.fl_str_mv 2008
2008-10-01
2016
2016-02-25
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
AM
http://purl.org/coar/version/c_ab4af688f83e57aa
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/83460
https://dx.doi.org/10.1029/2008GL035419
url https://hdl.handle.net/2117/83460
https://dx.doi.org/10.1029/2008GL035419
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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