Imaging the crustal structure of the Central Iberian Zone (Variscan Belt): The ALCUDIA deep seismic reflection transect

ALCUDIA is a 230 km long, vertical incidence deep seismic reflection transect acquired in spring 2007 across the southern Central Iberian Zone (part of the pre-Mesozoic Gondwana paleocontinent) of the Variscan Orogen of Spain. The carefully designed acquisition parameters resulted in a 20 s TWTT dee...

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Autores: Martínez Poyatos, D., Carbonell Beltrán, Ramón, Palomeras, Inmaculada, Simancas Cabrera, José Fernando, Ayarza Arribas, Puy, Martí, D., Azor, Antonio, Jabaloy Sánchez, Antonio, González Cuadra, Pablo, Tejero López, Rosa, Martín Parra, L.M., Matas, J., González Lodeiro, F., Pérez Estaún, A., García Lobón, J.L., Mansilla Plaza, Luis
Tipo de recurso: artículo
Fecha de publicación:2012
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/42401
Acceso en línea:https://hdl.handle.net/20.500.14352/42401
Access Level:acceso abierto
Palabra clave:551.24(234.1)
Variscan Orogen of Spain
Gondwana
Sismology
Crustal structure
Geodinámica
2507 Geofísica
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network_acronym_str ES
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repository_id_str
spelling Imaging the crustal structure of the Central Iberian Zone (Variscan Belt): The ALCUDIA deep seismic reflection transectMartínez Poyatos, D.Carbonell Beltrán, RamónPalomeras, InmaculadaSimancas Cabrera, José FernandoAyarza Arribas, PuyMartí, D.Azor, AntonioJabaloy Sánchez, AntonioGonzález Cuadra, PabloTejero López, RosaMartín Parra, L.M.Matas, J.González Lodeiro, F.Pérez Estaún, A.García Lobón, J.L.Mansilla Plaza, Luis551.24(234.1)Variscan Orogen of SpainGondwanaSismologyCrustal structureGeodinámica2507 GeofísicaALCUDIA is a 230 km long, vertical incidence deep seismic reflection transect acquired in spring 2007 across the southern Central Iberian Zone (part of the pre-Mesozoic Gondwana paleocontinent) of the Variscan Orogen of Spain. The carefully designed acquisition parameters resulted in a 20 s TWTT deep, 60–90 fold, high-resolution seismic reflection transect. The processed image shows a weakly reflective upper crust (the scarce reflectivity matching structures identified at surface), a thick, highly reflective and laminated lower crust, and a flat Moho located at 10 s TWTT (30 km depth). The transect can be divided into three segments with different structural styles in the lower crust. In the central segment, the lower crust is imaged by regular, horizontal and parallel reflectors, whereas in the northern and southern segments it displays oblique reflectors interpreted as an important thrust (north) and tectonic wedging involving the mantle (south). The ALCUDIA seismic image shows that in an intracontinental orogenic crust, far from the suture zones, the upper and lower crust may react differently to shortening in different sectors, which is taken as evidence for decoupling. The interpreted structures, as deduced from surface geology and the seismic image, show that deformation was distributed homogeneously in the upper crust, whereas it was concentrated in wedge/thrust structures at specific sectors in the lower crust. The seismic image also shows the location of late Variscan faults in spatial association with the lower crustal thickened areas.European Geosciences UnionUniversidad Complutense de Madrid20122012-01-0120122012-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/42401reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/424012026-06-02T12:44:21Z
dc.title.none.fl_str_mv Imaging the crustal structure of the Central Iberian Zone (Variscan Belt): The ALCUDIA deep seismic reflection transect
title Imaging the crustal structure of the Central Iberian Zone (Variscan Belt): The ALCUDIA deep seismic reflection transect
spellingShingle Imaging the crustal structure of the Central Iberian Zone (Variscan Belt): The ALCUDIA deep seismic reflection transect
Martínez Poyatos, D.
551.24(234.1)
Variscan Orogen of Spain
Gondwana
Sismology
Crustal structure
Geodinámica
2507 Geofísica
title_short Imaging the crustal structure of the Central Iberian Zone (Variscan Belt): The ALCUDIA deep seismic reflection transect
title_full Imaging the crustal structure of the Central Iberian Zone (Variscan Belt): The ALCUDIA deep seismic reflection transect
title_fullStr Imaging the crustal structure of the Central Iberian Zone (Variscan Belt): The ALCUDIA deep seismic reflection transect
title_full_unstemmed Imaging the crustal structure of the Central Iberian Zone (Variscan Belt): The ALCUDIA deep seismic reflection transect
title_sort Imaging the crustal structure of the Central Iberian Zone (Variscan Belt): The ALCUDIA deep seismic reflection transect
dc.creator.none.fl_str_mv Martínez Poyatos, D.
Carbonell Beltrán, Ramón
Palomeras, Inmaculada
Simancas Cabrera, José Fernando
Ayarza Arribas, Puy
Martí, D.
Azor, Antonio
Jabaloy Sánchez, Antonio
González Cuadra, Pablo
Tejero López, Rosa
Martín Parra, L.M.
Matas, J.
González Lodeiro, F.
Pérez Estaún, A.
García Lobón, J.L.
Mansilla Plaza, Luis
author Martínez Poyatos, D.
author_facet Martínez Poyatos, D.
Carbonell Beltrán, Ramón
Palomeras, Inmaculada
Simancas Cabrera, José Fernando
Ayarza Arribas, Puy
Martí, D.
Azor, Antonio
Jabaloy Sánchez, Antonio
González Cuadra, Pablo
Tejero López, Rosa
Martín Parra, L.M.
Matas, J.
González Lodeiro, F.
Pérez Estaún, A.
García Lobón, J.L.
Mansilla Plaza, Luis
author_role author
author2 Carbonell Beltrán, Ramón
Palomeras, Inmaculada
Simancas Cabrera, José Fernando
Ayarza Arribas, Puy
Martí, D.
Azor, Antonio
Jabaloy Sánchez, Antonio
González Cuadra, Pablo
Tejero López, Rosa
Martín Parra, L.M.
Matas, J.
González Lodeiro, F.
Pérez Estaún, A.
García Lobón, J.L.
Mansilla Plaza, Luis
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 551.24(234.1)
Variscan Orogen of Spain
Gondwana
Sismology
Crustal structure
Geodinámica
2507 Geofísica
topic 551.24(234.1)
Variscan Orogen of Spain
Gondwana
Sismology
Crustal structure
Geodinámica
2507 Geofísica
description ALCUDIA is a 230 km long, vertical incidence deep seismic reflection transect acquired in spring 2007 across the southern Central Iberian Zone (part of the pre-Mesozoic Gondwana paleocontinent) of the Variscan Orogen of Spain. The carefully designed acquisition parameters resulted in a 20 s TWTT deep, 60–90 fold, high-resolution seismic reflection transect. The processed image shows a weakly reflective upper crust (the scarce reflectivity matching structures identified at surface), a thick, highly reflective and laminated lower crust, and a flat Moho located at 10 s TWTT (30 km depth). The transect can be divided into three segments with different structural styles in the lower crust. In the central segment, the lower crust is imaged by regular, horizontal and parallel reflectors, whereas in the northern and southern segments it displays oblique reflectors interpreted as an important thrust (north) and tectonic wedging involving the mantle (south). The ALCUDIA seismic image shows that in an intracontinental orogenic crust, far from the suture zones, the upper and lower crust may react differently to shortening in different sectors, which is taken as evidence for decoupling. The interpreted structures, as deduced from surface geology and the seismic image, show that deformation was distributed homogeneously in the upper crust, whereas it was concentrated in wedge/thrust structures at specific sectors in the lower crust. The seismic image also shows the location of late Variscan faults in spatial association with the lower crustal thickened areas.
publishDate 2012
dc.date.none.fl_str_mv 2012
2012-01-01
2012
2012-01-01
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/20.500.14352/42401
url https://hdl.handle.net/20.500.14352/42401
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 European Geosciences Union
publisher.none.fl_str_mv European Geosciences Union
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 15,300719

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