Moho topography beneath the Iberian-Western Mediterranean region mapped from controlled-source and natural seismicity surveys

The complex tectonic interaction processes between the European and African plates at the Western Mediterranean have left marked imprints in the crustal architecture of this area, particularly concerning the lateral variations in crustal thicknesses. The detailed mapping of such variations is hence...

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Detalles Bibliográficos
Autores: Diaz, J., Gallart Muset, Josep, Carbonell, Ramón
Tipo de recurso: artículo
Fecha de publicación:2016
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/141082
Acceso en línea:http://hdl.handle.net/10261/141082
Access Level:acceso abierto
Palabra clave:Crustal thickness
Deep Seismic Sounding
Iberia-Western Mediterranean region
Receiver functions
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spelling Moho topography beneath the Iberian-Western Mediterranean region mapped from controlled-source and natural seismicity surveysDiaz, J.Gallart Muset, JosepCarbonell, RamónCrustal thicknessDeep Seismic SoundingIberia-Western Mediterranean regionReceiver functionsThe complex tectonic interaction processes between the European and African plates at the Western Mediterranean have left marked imprints in the crustal architecture of this area, particularly concerning the lateral variations in crustal thicknesses. The detailed mapping of such variations is hence of large interest, as it provides a major constraint to geophysical and geodynamic modeling at different scales. Controlled-source seismic profiling and receiver functions from natural seismicity are widely considered as major tools to constrain Moho topography. We compile here the Moho depths determined from a comprehensive number of both types of seismic surveys, to end up with a new 3D Moho depth map of the Iberian Peninsula, its continental margins and North Morocco. Since the 1970s, the lithospheric structure beneath this study area has been extensively investigated using multichannel normal incidence seismic reflection and refraction/wide-angle reflection profiling. In the last few years some high-resolution surveys at sea and inland have been acquired, the latter ones involving ~. 1000 land stations. On the other hand, the TopoIberia-IberArray experiment has triggered the investigations on crustal and lithospheric structure using natural seismicity, providing a homogeneous spatial resolution never achieved before. The availability of good quality results from both methodologies in a common area provides an excellent opportunity to check the consistency of the Moho depth estimations. The integration of both datasets has resulted in a new, high resolution map of the crustal thickness variations. The final grid evidences large Moho topography variations, including crustal imbrication in the Pyrenean range, a large and relatively undisturbed Variscan Massif in the center of Iberia and a probable delamination process beneath the Gibraltar Arc. The crustal thicknesses vary from ~. 15. km in continental margins up to values exceeding 50. km beneath the Pyrenees or the Rif Cordillera. © 2016.Funding for this project has been available from Spanish Ministry of Science and Innovation under grants: CGL 2014-09727, CGL2014-54582-REDC (RedTopoIberia), CGL2009-09727 (RIFSIS), CSD 2006-00041 (TopoIberia), CGL2007-63889 (SIMA), CGL2008-3474 (TopoMed), and by Generalitat de Catalunya grant 2009SGR1595. We have also used data from the PICASSO project, funded by the U.S. NSF grant EAR0808939, the Morocco Münster project funded under grant DFGTH1530/5-1, the WILAS project funded by the Portuguese Fundação para a Ciência e Tecnologia (PTDC/CTE-GIX/097946/2008) and the PYROPE experiment supported by the French Research Agency ANR blanc program (project PYROPE, ANR-09-BLAN-0229).Peer reviewedElsevierMinisterio de Ciencia e Innovación (España)Generalitat de CatalunyaFundação para a Ciência e a Tecnologia (Portugal)Agence Nationale de la Recherche (France)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201620162016info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/141082reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.tecto.2016.08.023Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1410822026-05-22T06:33:51Z
dc.title.none.fl_str_mv Moho topography beneath the Iberian-Western Mediterranean region mapped from controlled-source and natural seismicity surveys
title Moho topography beneath the Iberian-Western Mediterranean region mapped from controlled-source and natural seismicity surveys
spellingShingle Moho topography beneath the Iberian-Western Mediterranean region mapped from controlled-source and natural seismicity surveys
Diaz, J.
Crustal thickness
Deep Seismic Sounding
Iberia-Western Mediterranean region
Receiver functions
title_short Moho topography beneath the Iberian-Western Mediterranean region mapped from controlled-source and natural seismicity surveys
title_full Moho topography beneath the Iberian-Western Mediterranean region mapped from controlled-source and natural seismicity surveys
title_fullStr Moho topography beneath the Iberian-Western Mediterranean region mapped from controlled-source and natural seismicity surveys
title_full_unstemmed Moho topography beneath the Iberian-Western Mediterranean region mapped from controlled-source and natural seismicity surveys
title_sort Moho topography beneath the Iberian-Western Mediterranean region mapped from controlled-source and natural seismicity surveys
dc.creator.none.fl_str_mv Diaz, J.
Gallart Muset, Josep
Carbonell, Ramón
author Diaz, J.
author_facet Diaz, J.
Gallart Muset, Josep
Carbonell, Ramón
author_role author
author2 Gallart Muset, Josep
Carbonell, Ramón
author2_role author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
Generalitat de Catalunya
Fundação para a Ciência e a Tecnologia (Portugal)
Agence Nationale de la Recherche (France)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Crustal thickness
Deep Seismic Sounding
Iberia-Western Mediterranean region
Receiver functions
topic Crustal thickness
Deep Seismic Sounding
Iberia-Western Mediterranean region
Receiver functions
description The complex tectonic interaction processes between the European and African plates at the Western Mediterranean have left marked imprints in the crustal architecture of this area, particularly concerning the lateral variations in crustal thicknesses. The detailed mapping of such variations is hence of large interest, as it provides a major constraint to geophysical and geodynamic modeling at different scales. Controlled-source seismic profiling and receiver functions from natural seismicity are widely considered as major tools to constrain Moho topography. We compile here the Moho depths determined from a comprehensive number of both types of seismic surveys, to end up with a new 3D Moho depth map of the Iberian Peninsula, its continental margins and North Morocco. Since the 1970s, the lithospheric structure beneath this study area has been extensively investigated using multichannel normal incidence seismic reflection and refraction/wide-angle reflection profiling. In the last few years some high-resolution surveys at sea and inland have been acquired, the latter ones involving ~. 1000 land stations. On the other hand, the TopoIberia-IberArray experiment has triggered the investigations on crustal and lithospheric structure using natural seismicity, providing a homogeneous spatial resolution never achieved before. The availability of good quality results from both methodologies in a common area provides an excellent opportunity to check the consistency of the Moho depth estimations. The integration of both datasets has resulted in a new, high resolution map of the crustal thickness variations. The final grid evidences large Moho topography variations, including crustal imbrication in the Pyrenean range, a large and relatively undisturbed Variscan Massif in the center of Iberia and a probable delamination process beneath the Gibraltar Arc. The crustal thicknesses vary from ~. 15. km in continental margins up to values exceeding 50. km beneath the Pyrenees or the Rif Cordillera. © 2016.
publishDate 2016
dc.date.none.fl_str_mv 2016
2016
2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/141082
url http://hdl.handle.net/10261/141082
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.tecto.2016.08.023
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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