High-resolution scan of the Pyrenean crustal structure combining magnetotelluric and gravity data

The Pyrenees have undergone complex geodynamic evolution starting with experiencing significant tectonic events during the Variscan Orogeny, followed by the intrusion of large granitic complexes during the late Variscan stage, then the collision between the Iberian and European plates during the Alp...

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Autores: Piña-Varas, Perla, Soto, Ruth, Clariana, Pilar, Ayala, C., Rubio Sánchez-Aguililla, Félix Manuel, Ledo, Juanjo, Rey-Moral, Carmen, Marti, A., Mitjanas, G., Queralt, P., Marcuello, A., Santolaria, Pablo, Pueyo Morer, Emilio Luis
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/344771
Acceso en línea:http://hdl.handle.net/10261/344771
Access Level:acceso abierto
Palabra clave:Magnetotelluric 2D inversion
Gravity modelling
Joint interpretation
La Maladeta massif
Different intrusive pulses
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spelling High-resolution scan of the Pyrenean crustal structure combining magnetotelluric and gravity dataPiña-Varas, PerlaSoto, RuthClariana, PilarAyala, C.Rubio Sánchez-Aguililla, Félix ManuelLedo, JuanjoRey-Moral, CarmenMarti, A.Mitjanas, G.Queralt, P.Marcuello, A.Santolaria, PabloPueyo Morer, Emilio LuisMagnetotelluric 2D inversionGravity modellingJoint interpretationLa Maladeta massifDifferent intrusive pulsesThe Pyrenees have undergone complex geodynamic evolution starting with experiencing significant tectonic events during the Variscan Orogeny, followed by the intrusion of large granitic complexes during the late Variscan stage, then the collision between the Iberian and European plates during the Alpine Orogeny, and finally, Mesozoic extension. Despite extensive studies and the application of various geophysical methods (two-dimensional seismic reflection data, gravity, and long period magnetotellurics) to investigate the Pyrenean structure, there are still fundamental questions regarding its basement and cover architecture. Specifically, the geometry at depth of significant bodies such as the Late Variscan intrusive granites and Triassic evaporitic accumulations, remains unclear. To better understand these issues, we have conducted joint magnetotelluric and gravity surveys along a 60-km-long transect, spanning the boundary between the Axial and South Pyrenean Zones. Our final geological interpretation shows that the La Maladeta batholith consists of two distinct granitic bodies related to different intrusive pulses. In addition, we identify important Triassic evaporitic accumulations at depth. This work shows the high potential of integrating two geophysical models for understanding the geological evolution of structurally complex areas. The magnetotelluric and gravity data are complementary, with each dataset providing a different resolution for investigating the basement and cover architecture of the Pyrenees. These resolutions depend on the varied petrophysical properties of the rocks involved, including water content and deformation grade.This work was funded by projects PID2020-114273GB-C22 and PID2020-113135RB-C31 funded by MCIN/AEI/10.13039/501100011033 and CGL2017-82169-C2-2-R, from the Spanish Ministry of Science and Innovation. The authors acknowledge the contribution of José María Llorente, Agustín González, and Arturo García for the acquisition of the gravity data. This study also represents a contribution to GeoAp Research Group (E01-20R) (Aragón Government).Elsevier BVMinisterio de Ciencia e Innovación (España)Gobierno de AragónConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2024202420232024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/344771reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-114273GB-C22info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-113135RB-C31http://dx.doi.org/10.1016/j.tecto.2023.230022Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3447712026-05-22T06:33:51Z
dc.title.none.fl_str_mv High-resolution scan of the Pyrenean crustal structure combining magnetotelluric and gravity data
title High-resolution scan of the Pyrenean crustal structure combining magnetotelluric and gravity data
spellingShingle High-resolution scan of the Pyrenean crustal structure combining magnetotelluric and gravity data
Piña-Varas, Perla
Magnetotelluric 2D inversion
Gravity modelling
Joint interpretation
La Maladeta massif
Different intrusive pulses
title_short High-resolution scan of the Pyrenean crustal structure combining magnetotelluric and gravity data
title_full High-resolution scan of the Pyrenean crustal structure combining magnetotelluric and gravity data
title_fullStr High-resolution scan of the Pyrenean crustal structure combining magnetotelluric and gravity data
title_full_unstemmed High-resolution scan of the Pyrenean crustal structure combining magnetotelluric and gravity data
title_sort High-resolution scan of the Pyrenean crustal structure combining magnetotelluric and gravity data
dc.creator.none.fl_str_mv Piña-Varas, Perla
Soto, Ruth
Clariana, Pilar
Ayala, C.
Rubio Sánchez-Aguililla, Félix Manuel
Ledo, Juanjo
Rey-Moral, Carmen
Marti, A.
Mitjanas, G.
Queralt, P.
Marcuello, A.
Santolaria, Pablo
Pueyo Morer, Emilio Luis
author Piña-Varas, Perla
author_facet Piña-Varas, Perla
Soto, Ruth
Clariana, Pilar
Ayala, C.
Rubio Sánchez-Aguililla, Félix Manuel
Ledo, Juanjo
Rey-Moral, Carmen
Marti, A.
Mitjanas, G.
Queralt, P.
Marcuello, A.
Santolaria, Pablo
Pueyo Morer, Emilio Luis
author_role author
author2 Soto, Ruth
Clariana, Pilar
Ayala, C.
Rubio Sánchez-Aguililla, Félix Manuel
Ledo, Juanjo
Rey-Moral, Carmen
Marti, A.
Mitjanas, G.
Queralt, P.
Marcuello, A.
Santolaria, Pablo
Pueyo Morer, Emilio Luis
author2_role author
author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
Gobierno de Aragón
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Magnetotelluric 2D inversion
Gravity modelling
Joint interpretation
La Maladeta massif
Different intrusive pulses
topic Magnetotelluric 2D inversion
Gravity modelling
Joint interpretation
La Maladeta massif
Different intrusive pulses
description The Pyrenees have undergone complex geodynamic evolution starting with experiencing significant tectonic events during the Variscan Orogeny, followed by the intrusion of large granitic complexes during the late Variscan stage, then the collision between the Iberian and European plates during the Alpine Orogeny, and finally, Mesozoic extension. Despite extensive studies and the application of various geophysical methods (two-dimensional seismic reflection data, gravity, and long period magnetotellurics) to investigate the Pyrenean structure, there are still fundamental questions regarding its basement and cover architecture. Specifically, the geometry at depth of significant bodies such as the Late Variscan intrusive granites and Triassic evaporitic accumulations, remains unclear. To better understand these issues, we have conducted joint magnetotelluric and gravity surveys along a 60-km-long transect, spanning the boundary between the Axial and South Pyrenean Zones. Our final geological interpretation shows that the La Maladeta batholith consists of two distinct granitic bodies related to different intrusive pulses. In addition, we identify important Triassic evaporitic accumulations at depth. This work shows the high potential of integrating two geophysical models for understanding the geological evolution of structurally complex areas. The magnetotelluric and gravity data are complementary, with each dataset providing a different resolution for investigating the basement and cover architecture of the Pyrenees. These resolutions depend on the varied petrophysical properties of the rocks involved, including water content and deformation grade.
publishDate 2023
dc.date.none.fl_str_mv 2023
2024
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/344771
url http://hdl.handle.net/10261/344771
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-114273GB-C22
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-113135RB-C31
http://dx.doi.org/10.1016/j.tecto.2023.230022
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier BV
publisher.none.fl_str_mv Elsevier BV
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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