New geoelectrical characterization of a continental collision zone in the Central - Eastern Pyrenees: Constraints from 3-D joint inversion of electromagnetic data

Continent-continent collisions are responsible for the formation of large mountain ranges like the Himalayas and the Alps and play a primary role in the development of the continents. The continental collision between the Iberian and European plates during the Alpine Orogeny resulted in the formatio...

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Autores: Campanyà, Joan, Ledo Fernández, Juanjo, Queralt i Capdevila, Pilar, Marcuello Pascual, Alejandro, Muñoz, J. A., Liesa Torre-Marín, Montserrat, Jones, Alan G.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2018
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/161358
Acceso en línea:https://hdl.handle.net/2445/161358
Access Level:acceso abierto
Palabra clave:Prospecció electromagnètica
Prospecció geofísica
Escorça terrestre
Electromagnetic prospecting
Geophysical exploration
Earth's crust
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spelling New geoelectrical characterization of a continental collision zone in the Central - Eastern Pyrenees: Constraints from 3-D joint inversion of electromagnetic dataCampanyà, JoanLedo Fernández, JuanjoQueralt i Capdevila, PilarMarcuello Pascual, AlejandroMuñoz, J. A.Liesa Torre-Marín, MontserratJones, Alan G.Prospecció electromagnèticaProspecció geofísicaEscorça terrestreElectromagnetic prospectingGeophysical explorationEarth's crustContinent-continent collisions are responsible for the formation of large mountain ranges like the Himalayas and the Alps and play a primary role in the development of the continents. The continental collision between the Iberian and European plates during the Alpine Orogeny resulted in the formation of the Pyrenees. In this study new electromagnetic data from the Eastern Pyrenees were complemented with older data from the Central Pyrenees, constraining the physical and geological processes at the eastern end of the Pyrenean mountain range. The electrical resistivity distribution beneath the Central-Eastern Pyrenees was characterized by means of three-dimensional (3-D) joint inversion of three electromagnetic datasets: (1) the MT impedance tensor (Z), (2) the geomagnetic transfer function (T), and (3) the inter-station horizontal magnetic transfer function (H). The main finding was the non-continuity to the east of the major conductive anomaly observed previously beneath the Central and West-Central Pyrenees related to partial melting of the Iberian subducted lower crust. Lower amounts of water (related to the presence of muscovite and biotite) in the subducted lower crust beneath the Eastern Pyrenees were suggested to explain the lack of partial melting in this part of the mountain range. The electrical resistivity model also revealed higher electrical resistivity values for the lithospheric mantle beneath the Eastern Pyrenees than beneath the Central Pyrenees, thus supporting the hypothesis of an heterogeneous Iberian plate inherited from the Variscan Orogeny. A less clear signature was the lateral variation along the strike direction of the lithosphere-asthenosphere boundary beneath the Eastern Pyrenees (relatively flat, between 110 km and 140 km depth) and the Central Pyrenees (north dipping, between 80 km and 120 km depth beneath the Iberian Plate and between 110 km and 160 km depth beneath the European plate), supporting the hypothesis of a missing lithospheric root beneath the Eastern Pyrenees.Elsevier B.V.2020202020182020info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersion45 p.application/pdfhttps://hdl.handle.net/2445/161358Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésVersió postprint del document publicat a: https://doi.org/10.1016/j.tecto.2018.05.024Tectonophysics, 2018, vol. 742-743, p. 168-179https://doi.org/10.1016/j.tecto.2018.05.024cc-by-nc-nd (c) Elsevier B.V., 2018http://creativecommons.org/licenses/by-nc-nd/3.0/esinfo:eu-repo/semantics/openAccessoai:recercat.cat:2445/1613582026-05-29T05:05:01Z
dc.title.none.fl_str_mv New geoelectrical characterization of a continental collision zone in the Central - Eastern Pyrenees: Constraints from 3-D joint inversion of electromagnetic data
title New geoelectrical characterization of a continental collision zone in the Central - Eastern Pyrenees: Constraints from 3-D joint inversion of electromagnetic data
spellingShingle New geoelectrical characterization of a continental collision zone in the Central - Eastern Pyrenees: Constraints from 3-D joint inversion of electromagnetic data
Campanyà, Joan
Prospecció electromagnètica
Prospecció geofísica
Escorça terrestre
Electromagnetic prospecting
Geophysical exploration
Earth's crust
title_short New geoelectrical characterization of a continental collision zone in the Central - Eastern Pyrenees: Constraints from 3-D joint inversion of electromagnetic data
title_full New geoelectrical characterization of a continental collision zone in the Central - Eastern Pyrenees: Constraints from 3-D joint inversion of electromagnetic data
title_fullStr New geoelectrical characterization of a continental collision zone in the Central - Eastern Pyrenees: Constraints from 3-D joint inversion of electromagnetic data
title_full_unstemmed New geoelectrical characterization of a continental collision zone in the Central - Eastern Pyrenees: Constraints from 3-D joint inversion of electromagnetic data
title_sort New geoelectrical characterization of a continental collision zone in the Central - Eastern Pyrenees: Constraints from 3-D joint inversion of electromagnetic data
dc.creator.none.fl_str_mv Campanyà, Joan
Ledo Fernández, Juanjo
Queralt i Capdevila, Pilar
Marcuello Pascual, Alejandro
Muñoz, J. A.
Liesa Torre-Marín, Montserrat
Jones, Alan G.
author Campanyà, Joan
author_facet Campanyà, Joan
Ledo Fernández, Juanjo
Queralt i Capdevila, Pilar
Marcuello Pascual, Alejandro
Muñoz, J. A.
Liesa Torre-Marín, Montserrat
Jones, Alan G.
author_role author
author2 Ledo Fernández, Juanjo
Queralt i Capdevila, Pilar
Marcuello Pascual, Alejandro
Muñoz, J. A.
Liesa Torre-Marín, Montserrat
Jones, Alan G.
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Prospecció electromagnètica
Prospecció geofísica
Escorça terrestre
Electromagnetic prospecting
Geophysical exploration
Earth's crust
topic Prospecció electromagnètica
Prospecció geofísica
Escorça terrestre
Electromagnetic prospecting
Geophysical exploration
Earth's crust
description Continent-continent collisions are responsible for the formation of large mountain ranges like the Himalayas and the Alps and play a primary role in the development of the continents. The continental collision between the Iberian and European plates during the Alpine Orogeny resulted in the formation of the Pyrenees. In this study new electromagnetic data from the Eastern Pyrenees were complemented with older data from the Central Pyrenees, constraining the physical and geological processes at the eastern end of the Pyrenean mountain range. The electrical resistivity distribution beneath the Central-Eastern Pyrenees was characterized by means of three-dimensional (3-D) joint inversion of three electromagnetic datasets: (1) the MT impedance tensor (Z), (2) the geomagnetic transfer function (T), and (3) the inter-station horizontal magnetic transfer function (H). The main finding was the non-continuity to the east of the major conductive anomaly observed previously beneath the Central and West-Central Pyrenees related to partial melting of the Iberian subducted lower crust. Lower amounts of water (related to the presence of muscovite and biotite) in the subducted lower crust beneath the Eastern Pyrenees were suggested to explain the lack of partial melting in this part of the mountain range. The electrical resistivity model also revealed higher electrical resistivity values for the lithospheric mantle beneath the Eastern Pyrenees than beneath the Central Pyrenees, thus supporting the hypothesis of an heterogeneous Iberian plate inherited from the Variscan Orogeny. A less clear signature was the lateral variation along the strike direction of the lithosphere-asthenosphere boundary beneath the Eastern Pyrenees (relatively flat, between 110 km and 140 km depth) and the Central Pyrenees (north dipping, between 80 km and 120 km depth beneath the Iberian Plate and between 110 km and 160 km depth beneath the European plate), supporting the hypothesis of a missing lithospheric root beneath the Eastern Pyrenees.
publishDate 2018
dc.date.none.fl_str_mv 2018
2020
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/161358
url https://hdl.handle.net/2445/161358
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Versió postprint del document publicat a: https://doi.org/10.1016/j.tecto.2018.05.024
Tectonophysics, 2018, vol. 742-743, p. 168-179
https://doi.org/10.1016/j.tecto.2018.05.024
dc.rights.none.fl_str_mv cc-by-nc-nd (c) Elsevier B.V., 2018
http://creativecommons.org/licenses/by-nc-nd/3.0/es
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by-nc-nd (c) Elsevier B.V., 2018
http://creativecommons.org/licenses/by-nc-nd/3.0/es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 45 p.
application/pdf
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
dc.source.none.fl_str_mv Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.812429

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