Shortening-controlled magnetic fabrics in the Alpine thrust front of the Cantabrian Mountains

The magnetic fabrics (or anisotropy of magnetic susceptibility) are used in this work to decipher thrust kinematics in the Cantabrian (western) Pyrenees. Most of the analyzed rocks (total of 51 sites) correspond to the Mesozoic rifting and post-rifting stages (Triassic, Jurassic and Cretaceous) rock...

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Autores: Oliva-Urcia, B., Román Berdiel, T., Torres-López, S., Villalaín, J. J., Casas-Sainz, A.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Universidad de Zaragoza
Repositorio:Zaguán. Repositorio Digital de la Universidad de Zaragoza
OAI Identifier:oai:zaguan.unizar.es:165618
Acceso en línea:http://zaguan.unizar.es/record/165618
Access Level:acceso abierto
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spelling Shortening-controlled magnetic fabrics in the Alpine thrust front of the Cantabrian MountainsOliva-Urcia, B.Román Berdiel, T.Torres-López, S.Villalaín, J. J.Casas-Sainz, A.The magnetic fabrics (or anisotropy of magnetic susceptibility) are used in this work to decipher thrust kinematics in the Cantabrian (western) Pyrenees. Most of the analyzed rocks (total of 51 sites) correspond to the Mesozoic rifting and post-rifting stages (Triassic, Jurassic and Cretaceous) rocks in the Asturian-Leonese region, whose alpine structure is controlled by south-verging, basement-involved thrusts. Paramagnetic minerals are scarce as shown by the thermomagnetic analyses, and maghemite/hematite predominates as carriers of the magnetic fabric. The rifting phase is recorded by a primary fabric that remained unaltered during the alpine contraction, whereas the magnetic fabric of the Albian and Upper Cretaceous rocks show a reorientation due to contraction, which is better recorded in the fine grained continental facies of the Utrillas Group than in the carbonatic rocks overlying them. In the contractional fabrics found, the magnetic lineation delineates the thrust front enhancing the changes of the local shortening direction along. This reinforces the hypothesis of a strong control of the thrust direction by inherited structures.2025info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://zaguan.unizar.es/record/165618reponame:Zaguán. Repositorio Digital de la Universidad de Zaragozainstname:Universidad de ZaragozaInglésinfo:eu-repo/grantAgreement/ES/DGA/E32-23Rinfo:eu-repo/grantAgreement/ES/MICINN/PID2019-108753GB-C21info:eu-repo/grantAgreement/ES/MICINN/PID2019-108753GB-C22info:eu-repo/semantics/openAccessoai:zaguan.unizar.es:1656182026-05-29T13:59:51Z
dc.title.none.fl_str_mv Shortening-controlled magnetic fabrics in the Alpine thrust front of the Cantabrian Mountains
title Shortening-controlled magnetic fabrics in the Alpine thrust front of the Cantabrian Mountains
spellingShingle Shortening-controlled magnetic fabrics in the Alpine thrust front of the Cantabrian Mountains
Oliva-Urcia, B.
title_short Shortening-controlled magnetic fabrics in the Alpine thrust front of the Cantabrian Mountains
title_full Shortening-controlled magnetic fabrics in the Alpine thrust front of the Cantabrian Mountains
title_fullStr Shortening-controlled magnetic fabrics in the Alpine thrust front of the Cantabrian Mountains
title_full_unstemmed Shortening-controlled magnetic fabrics in the Alpine thrust front of the Cantabrian Mountains
title_sort Shortening-controlled magnetic fabrics in the Alpine thrust front of the Cantabrian Mountains
dc.creator.none.fl_str_mv Oliva-Urcia, B.
Román Berdiel, T.
Torres-López, S.
Villalaín, J. J.
Casas-Sainz, A.
author Oliva-Urcia, B.
author_facet Oliva-Urcia, B.
Román Berdiel, T.
Torres-López, S.
Villalaín, J. J.
Casas-Sainz, A.
author_role author
author2 Román Berdiel, T.
Torres-López, S.
Villalaín, J. J.
Casas-Sainz, A.
author2_role author
author
author
author
description The magnetic fabrics (or anisotropy of magnetic susceptibility) are used in this work to decipher thrust kinematics in the Cantabrian (western) Pyrenees. Most of the analyzed rocks (total of 51 sites) correspond to the Mesozoic rifting and post-rifting stages (Triassic, Jurassic and Cretaceous) rocks in the Asturian-Leonese region, whose alpine structure is controlled by south-verging, basement-involved thrusts. Paramagnetic minerals are scarce as shown by the thermomagnetic analyses, and maghemite/hematite predominates as carriers of the magnetic fabric. The rifting phase is recorded by a primary fabric that remained unaltered during the alpine contraction, whereas the magnetic fabric of the Albian and Upper Cretaceous rocks show a reorientation due to contraction, which is better recorded in the fine grained continental facies of the Utrillas Group than in the carbonatic rocks overlying them. In the contractional fabrics found, the magnetic lineation delineates the thrust front enhancing the changes of the local shortening direction along. This reinforces the hypothesis of a strong control of the thrust direction by inherited structures.
publishDate 2025
dc.date.none.fl_str_mv 2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://zaguan.unizar.es/record/165618
url http://zaguan.unizar.es/record/165618
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/grantAgreement/ES/DGA/E32-23R
info:eu-repo/grantAgreement/ES/MICINN/PID2019-108753GB-C21
info:eu-repo/grantAgreement/ES/MICINN/PID2019-108753GB-C22
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
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publisher.none.fl_str_mv
dc.source.none.fl_str_mv reponame:Zaguán. Repositorio Digital de la Universidad de Zaragoza
instname:Universidad de Zaragoza
instname_str Universidad de Zaragoza
reponame_str Zaguán. Repositorio Digital de la Universidad de Zaragoza
collection Zaguán. Repositorio Digital de la Universidad de Zaragoza
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