Lithospheric structure of Iberia and Morocco using finite‐frequency Rayleigh wave tomography from earthquakes and seismic ambient noise.

[EN]We present a new 3-D shear velocity model of the western Mediterranean from the Pyrenees, Spain, to the Atlas Mountains, Morocco, and the estimated crustal and lithospheric thickness. The velocity model shows different crustal and lithospheric velocities for the Variscan provinces, those which h...

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Detalles Bibliográficos
Autores: Palomeras Torres, Inmaculada, Villaseñor, A., Thurner, S., Levander, A., Gallart, J., Harnafi, M.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2017
País:España
Institución:Universidad de Salamanca (USAL)
Repositorio:GREDOS. Repositorio Institucional de la Universidad de Salamanca
OAI Identifier:oai:gredos.usal.es:10366/155576
Acceso en línea:http://hdl.handle.net/10366/155576
Access Level:acceso abierto
Palabra clave:3-D Shear velocity model of Iberia and north Morocco
Moho and LAB map of Iberia and north Morocco
Crustal and Upper mantle imaging
2507.06 Geofísica de la Masa Sólida Terrestre
2507.05 Sismología y Prospección Sísmica
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repository_id_str
spelling Lithospheric structure of Iberia and Morocco using finite‐frequency Rayleigh wave tomography from earthquakes and seismic ambient noise.Palomeras Torres, InmaculadaVillaseñor, A.Thurner, S.Levander, A.Gallart, J.Harnafi, M.3-D Shear velocity model of Iberia and north MoroccoMoho and LAB map of Iberia and north MoroccoCrustal and Upper mantle imaging2507.06 Geofísica de la Masa Sólida Terrestre2507.05 Sismología y Prospección Sísmica[EN]We present a new 3-D shear velocity model of the western Mediterranean from the Pyrenees, Spain, to the Atlas Mountains, Morocco, and the estimated crustal and lithospheric thickness. The velocity model shows different crustal and lithospheric velocities for the Variscan provinces, those which have been affected by Alpine deformation, and those which are actively deforming. The Iberian Massif has detectable differences in crustal thickness that can be related to the evolution of the Variscan orogen in Iberia. Areas affected by Alpine deformation have generally lower velocities in the upper and lower crust than the Iberian Massif. Beneath the Gibraltar Strait and surrounding areas, the crustal thickness is greater than 50 km, below which a high-velocity anomaly (>4.5 km/s) is mapped to depths greater than 200 km. We identify this as a subducted remnant of the NeoTethys plate referred to as the Alboran and western Mediterranean slab. Beneath the adjacent Betic and Rif Mountains, the Alboran slab is still attached to the base of the crust, depressing it, and ultimately delaminating the lower crust and mantle lithosphere as the slab sinks. Under the adjacent continents, the Alboran slab is surrounded by low upper mantle shear wave velocities (Vs < 4.3) that we interpret as asthenosphere that has replaced the continental margin lithosphere which was viscously removed by Alboran plate subduction. The southernmost part of the model features an anomalously thin lithosphere beneath the Atlas Mountains that could be related to lateral flow induced by the Alboran slab.Wiley Open Access [Commercial Publisher] American Geophysical Union [Society Publisher] Geochemical Society [Society Publisher]202420242017info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10366/155576reponame:GREDOS. Repositorio Institucional de la Universidad de Salamancainstname:Universidad de Salamanca (USAL)InglésU.S. National Science Foundation EAR-0808939.CONSOLIDER-Ingenio 2010 TOPO-IBERIA (CSD2006-00041)Spanish ministry grants CGL2010-17280, CGL2006-01171, CGL2009-09727, and CGL2007-63889Generalitat de Catalunya grant 2009 SGR 6info:eu-repo/semantics/openAccessoai:gredos.usal.es:10366/1555762026-06-07T06:28:51Z
dc.title.none.fl_str_mv Lithospheric structure of Iberia and Morocco using finite‐frequency Rayleigh wave tomography from earthquakes and seismic ambient noise.
title Lithospheric structure of Iberia and Morocco using finite‐frequency Rayleigh wave tomography from earthquakes and seismic ambient noise.
spellingShingle Lithospheric structure of Iberia and Morocco using finite‐frequency Rayleigh wave tomography from earthquakes and seismic ambient noise.
Palomeras Torres, Inmaculada
3-D Shear velocity model of Iberia and north Morocco
Moho and LAB map of Iberia and north Morocco
Crustal and Upper mantle imaging
2507.06 Geofísica de la Masa Sólida Terrestre
2507.05 Sismología y Prospección Sísmica
title_short Lithospheric structure of Iberia and Morocco using finite‐frequency Rayleigh wave tomography from earthquakes and seismic ambient noise.
title_full Lithospheric structure of Iberia and Morocco using finite‐frequency Rayleigh wave tomography from earthquakes and seismic ambient noise.
title_fullStr Lithospheric structure of Iberia and Morocco using finite‐frequency Rayleigh wave tomography from earthquakes and seismic ambient noise.
title_full_unstemmed Lithospheric structure of Iberia and Morocco using finite‐frequency Rayleigh wave tomography from earthquakes and seismic ambient noise.
title_sort Lithospheric structure of Iberia and Morocco using finite‐frequency Rayleigh wave tomography from earthquakes and seismic ambient noise.
dc.creator.none.fl_str_mv Palomeras Torres, Inmaculada
Villaseñor, A.
Thurner, S.
Levander, A.
Gallart, J.
Harnafi, M.
author Palomeras Torres, Inmaculada
author_facet Palomeras Torres, Inmaculada
Villaseñor, A.
Thurner, S.
Levander, A.
Gallart, J.
Harnafi, M.
author_role author
author2 Villaseñor, A.
Thurner, S.
Levander, A.
Gallart, J.
Harnafi, M.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv 3-D Shear velocity model of Iberia and north Morocco
Moho and LAB map of Iberia and north Morocco
Crustal and Upper mantle imaging
2507.06 Geofísica de la Masa Sólida Terrestre
2507.05 Sismología y Prospección Sísmica
topic 3-D Shear velocity model of Iberia and north Morocco
Moho and LAB map of Iberia and north Morocco
Crustal and Upper mantle imaging
2507.06 Geofísica de la Masa Sólida Terrestre
2507.05 Sismología y Prospección Sísmica
description [EN]We present a new 3-D shear velocity model of the western Mediterranean from the Pyrenees, Spain, to the Atlas Mountains, Morocco, and the estimated crustal and lithospheric thickness. The velocity model shows different crustal and lithospheric velocities for the Variscan provinces, those which have been affected by Alpine deformation, and those which are actively deforming. The Iberian Massif has detectable differences in crustal thickness that can be related to the evolution of the Variscan orogen in Iberia. Areas affected by Alpine deformation have generally lower velocities in the upper and lower crust than the Iberian Massif. Beneath the Gibraltar Strait and surrounding areas, the crustal thickness is greater than 50 km, below which a high-velocity anomaly (>4.5 km/s) is mapped to depths greater than 200 km. We identify this as a subducted remnant of the NeoTethys plate referred to as the Alboran and western Mediterranean slab. Beneath the adjacent Betic and Rif Mountains, the Alboran slab is still attached to the base of the crust, depressing it, and ultimately delaminating the lower crust and mantle lithosphere as the slab sinks. Under the adjacent continents, the Alboran slab is surrounded by low upper mantle shear wave velocities (Vs < 4.3) that we interpret as asthenosphere that has replaced the continental margin lithosphere which was viscously removed by Alboran plate subduction. The southernmost part of the model features an anomalously thin lithosphere beneath the Atlas Mountains that could be related to lateral flow induced by the Alboran slab.
publishDate 2017
dc.date.none.fl_str_mv 2017
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10366/155576
url http://hdl.handle.net/10366/155576
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv U.S. National Science Foundation EAR-0808939.
CONSOLIDER-Ingenio 2010 TOPO-IBERIA (CSD2006-00041)
Spanish ministry grants CGL2010-17280, CGL2006-01171, CGL2009-09727, and CGL2007-63889
Generalitat de Catalunya grant 2009 SGR 6
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Wiley Open Access [Commercial Publisher] American Geophysical Union [Society Publisher] Geochemical Society [Society Publisher]
publisher.none.fl_str_mv Wiley Open Access [Commercial Publisher] American Geophysical Union [Society Publisher] Geochemical Society [Society Publisher]
dc.source.none.fl_str_mv reponame:GREDOS. Repositorio Institucional de la Universidad de Salamanca
instname:Universidad de Salamanca (USAL)
instname_str Universidad de Salamanca (USAL)
reponame_str GREDOS. Repositorio Institucional de la Universidad de Salamanca
collection GREDOS. Repositorio Institucional de la Universidad de Salamanca
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869415247586000896
score 15,301603

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