The Spanish-Portuguese Central System: An Example of Intense Intraplate Deformation and Strain Partitioning

The intraplate deformation of Iberia during the Cenozoic produced a series of ranges and deformation belts with a wide variety of structural trends. The Spanish-Portuguese Central System is the most prominent feature crossing over the whole of central Iberia. It is a large thick-skinned crustal pop-...

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Detalles Bibliográficos
Autores: De Vicente Muñoz, Gerardo, Cunha, P.P., Muñoz Martín, Alfonso, Cloetingh, S.A.P.L., Olaiz Campos, Antonio José, Vegas Martínez, Ramón
Tipo de recurso: artículo
Fecha de publicación:2018
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/12941
Acceso en línea:https://hdl.handle.net/20.500.14352/12941
Access Level:acceso abierto
Palabra clave:551.24(46)
Deformation
Iberia
Tectonic activity
Geofísica
Geología
Geodinámica
2507 Geofísica
2506 Geología
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oai_identifier_str oai:docta.ucm.es:20.500.14352/12941
network_acronym_str ES
network_name_str España
repository_id_str
spelling The Spanish-Portuguese Central System: An Example of Intense Intraplate Deformation and Strain PartitioningDe Vicente Muñoz, GerardoCunha, P.P.Muñoz Martín, AlfonsoCloetingh, S.A.P.L.Olaiz Campos, Antonio JoséVegas Martínez, Ramón551.24(46)DeformationIberiaTectonic activityGeofísicaGeologíaGeodinámica2507 Geofísica2506 Geología2507 GeofísicaThe intraplate deformation of Iberia during the Cenozoic produced a series of ranges and deformation belts with a wide variety of structural trends. The Spanish-Portuguese Central System is the most prominent feature crossing over the whole of central Iberia. It is a large thick-skinned crustal pop-up with NE-SW to E-W thrusts. However, the 500-km-long left-lateral strike-slip Messejana-Plasencia fault, also NE-SW oriented, bends these thrusts to produce NE-SW local paleostresses close to the fault, which seems to be consistent with a common deformational arrangement. This is also supported by the similar sedimentary infilling characteristics found in the surrounding Cenozoic basins. The moment of the maximum intraplate deformation is registered at the same time in all these basins during the upper Priabonian-lower Chattian. As there are two possible sources for the intraplate compressive stresses, the Pyrenean (N-S shortening) orogen to the north and the Betic (NW-SE shortening) orogen to the south, neither can simply explain both simultaneous movements (NE-SW strike-slip and NE-SW thrusting). The deduced age of the main deformation indicates a Pyrenean origin. In contrast, the concept of strain partitioning between the two types of faults gives as a result an overall north trending compression. Existing data do not support crustal detachment from the Betics neither from the Pyrenees but are consistent with a crustal uplift related to lithospheric folding. The subsequent Betic-related stress field only slightly reworked previously Pyrenean-related structures, except for the Portuguese sector, where tectonic activity occurred mainly in the Upper Miocene.AGUUniversidad Complutense de Madrid20182018-01-0120182018-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/12941reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/129412026-06-02T12:44:21Z
dc.title.none.fl_str_mv The Spanish-Portuguese Central System: An Example of Intense Intraplate Deformation and Strain Partitioning
title The Spanish-Portuguese Central System: An Example of Intense Intraplate Deformation and Strain Partitioning
spellingShingle The Spanish-Portuguese Central System: An Example of Intense Intraplate Deformation and Strain Partitioning
De Vicente Muñoz, Gerardo
551.24(46)
Deformation
Iberia
Tectonic activity
Geofísica
Geología
Geodinámica
2507 Geofísica
2506 Geología
2507 Geofísica
title_short The Spanish-Portuguese Central System: An Example of Intense Intraplate Deformation and Strain Partitioning
title_full The Spanish-Portuguese Central System: An Example of Intense Intraplate Deformation and Strain Partitioning
title_fullStr The Spanish-Portuguese Central System: An Example of Intense Intraplate Deformation and Strain Partitioning
title_full_unstemmed The Spanish-Portuguese Central System: An Example of Intense Intraplate Deformation and Strain Partitioning
title_sort The Spanish-Portuguese Central System: An Example of Intense Intraplate Deformation and Strain Partitioning
dc.creator.none.fl_str_mv De Vicente Muñoz, Gerardo
Cunha, P.P.
Muñoz Martín, Alfonso
Cloetingh, S.A.P.L.
Olaiz Campos, Antonio José
Vegas Martínez, Ramón
author De Vicente Muñoz, Gerardo
author_facet De Vicente Muñoz, Gerardo
Cunha, P.P.
Muñoz Martín, Alfonso
Cloetingh, S.A.P.L.
Olaiz Campos, Antonio José
Vegas Martínez, Ramón
author_role author
author2 Cunha, P.P.
Muñoz Martín, Alfonso
Cloetingh, S.A.P.L.
Olaiz Campos, Antonio José
Vegas Martínez, Ramón
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 551.24(46)
Deformation
Iberia
Tectonic activity
Geofísica
Geología
Geodinámica
2507 Geofísica
2506 Geología
2507 Geofísica
topic 551.24(46)
Deformation
Iberia
Tectonic activity
Geofísica
Geología
Geodinámica
2507 Geofísica
2506 Geología
2507 Geofísica
description The intraplate deformation of Iberia during the Cenozoic produced a series of ranges and deformation belts with a wide variety of structural trends. The Spanish-Portuguese Central System is the most prominent feature crossing over the whole of central Iberia. It is a large thick-skinned crustal pop-up with NE-SW to E-W thrusts. However, the 500-km-long left-lateral strike-slip Messejana-Plasencia fault, also NE-SW oriented, bends these thrusts to produce NE-SW local paleostresses close to the fault, which seems to be consistent with a common deformational arrangement. This is also supported by the similar sedimentary infilling characteristics found in the surrounding Cenozoic basins. The moment of the maximum intraplate deformation is registered at the same time in all these basins during the upper Priabonian-lower Chattian. As there are two possible sources for the intraplate compressive stresses, the Pyrenean (N-S shortening) orogen to the north and the Betic (NW-SE shortening) orogen to the south, neither can simply explain both simultaneous movements (NE-SW strike-slip and NE-SW thrusting). The deduced age of the main deformation indicates a Pyrenean origin. In contrast, the concept of strain partitioning between the two types of faults gives as a result an overall north trending compression. Existing data do not support crustal detachment from the Betics neither from the Pyrenees but are consistent with a crustal uplift related to lithospheric folding. The subsequent Betic-related stress field only slightly reworked previously Pyrenean-related structures, except for the Portuguese sector, where tectonic activity occurred mainly in the Upper Miocene.
publishDate 2018
dc.date.none.fl_str_mv 2018
2018-01-01
2018
2018-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/12941
url https://hdl.handle.net/20.500.14352/12941
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.publisher.none.fl_str_mv AGU
publisher.none.fl_str_mv AGU
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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