New paleobotanical data from Carboniferous Culm deposits constrain the age of the Variscan deformation in the Eastern Pyrenees

The pre-Variscan rocks of the Pyrenees exhibit a polyphase deformation linked to the Variscan crustal shortening and a low-pressure-high-temperature metamorphism. However, there is scarce chronostratigraphic evidence of this Variscan deformation in the Pyrenees. In low-grade metamorphic domains, max...

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Autores: Martín-Closas, Carles, Trias Navarro, Sergio, Casas Tuset, Josep Maria
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2018
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/145406
Acceso en línea:https://hdl.handle.net/2445/145406
Access Level:acceso abierto
Palabra clave:Pirineus
Turbidites
Orogènesi
Carbonífer
Pyrenees
Orogeny
Carboniferous
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spelling New paleobotanical data from Carboniferous Culm deposits constrain the age of the Variscan deformation in the Eastern PyreneesMartín-Closas, CarlesTrias Navarro, SergioCasas Tuset, Josep MariaPirineusTurbiditesOrogènesiCarboníferPyreneesTurbiditesOrogenyCarboniferousThe pre-Variscan rocks of the Pyrenees exhibit a polyphase deformation linked to the Variscan crustal shortening and a low-pressure-high-temperature metamorphism. However, there is scarce chronostratigraphic evidence of this Variscan deformation in the Pyrenees. In low-grade metamorphic domains, maximum ages have been provided by the synorogenic Carboniferous Culm deposits. In medium- to high-grade metamorphic areas, the geochronological ages of the Variscan regional metamorphism or intrusive magmatic bodies constrain the age of the main Variscan deformation structures. However, these data usually provide a minimum age. Here, we present new palaeobotanical records that assign a Namurian age to the base of the Culm deposits of La Cerdanya in the eastern Pyrenees. This dating is based on the co-occurrence of the sphenopsids Archaeocalamites radiatus, Mesocalamites cistiiformis and the seed Cardiocarpus sp. The plant remains were found in sandstone facies produced by high-density turbidity flows of a deep-sea fan system. The new biostratigraphic information constrains the age of the Carboniferous Culm succession in the eastern Pyrenees.(UB). (ICTJA). (IDEA). (UAB). (CSIC)2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/145406Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.1344/GeologicaActa2018.16.2Geologica Acta, 2018, vol. 16, num. 2, p. 107-123https://doi.org/10.1344/GeologicaActa2018.16.2cc-by-sa (c) Martín-Closas, Carles et al., 2018http://creativecommons.org/licenses/by-sa/3.0/esinfo:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1454062026-05-27T06:46:51Z
dc.title.none.fl_str_mv New paleobotanical data from Carboniferous Culm deposits constrain the age of the Variscan deformation in the Eastern Pyrenees
title New paleobotanical data from Carboniferous Culm deposits constrain the age of the Variscan deformation in the Eastern Pyrenees
spellingShingle New paleobotanical data from Carboniferous Culm deposits constrain the age of the Variscan deformation in the Eastern Pyrenees
Martín-Closas, Carles
Pirineus
Turbidites
Orogènesi
Carbonífer
Pyrenees
Turbidites
Orogeny
Carboniferous
title_short New paleobotanical data from Carboniferous Culm deposits constrain the age of the Variscan deformation in the Eastern Pyrenees
title_full New paleobotanical data from Carboniferous Culm deposits constrain the age of the Variscan deformation in the Eastern Pyrenees
title_fullStr New paleobotanical data from Carboniferous Culm deposits constrain the age of the Variscan deformation in the Eastern Pyrenees
title_full_unstemmed New paleobotanical data from Carboniferous Culm deposits constrain the age of the Variscan deformation in the Eastern Pyrenees
title_sort New paleobotanical data from Carboniferous Culm deposits constrain the age of the Variscan deformation in the Eastern Pyrenees
dc.creator.none.fl_str_mv Martín-Closas, Carles
Trias Navarro, Sergio
Casas Tuset, Josep Maria
author Martín-Closas, Carles
author_facet Martín-Closas, Carles
Trias Navarro, Sergio
Casas Tuset, Josep Maria
author_role author
author2 Trias Navarro, Sergio
Casas Tuset, Josep Maria
author2_role author
author
dc.subject.none.fl_str_mv Pirineus
Turbidites
Orogènesi
Carbonífer
Pyrenees
Turbidites
Orogeny
Carboniferous
topic Pirineus
Turbidites
Orogènesi
Carbonífer
Pyrenees
Turbidites
Orogeny
Carboniferous
description The pre-Variscan rocks of the Pyrenees exhibit a polyphase deformation linked to the Variscan crustal shortening and a low-pressure-high-temperature metamorphism. However, there is scarce chronostratigraphic evidence of this Variscan deformation in the Pyrenees. In low-grade metamorphic domains, maximum ages have been provided by the synorogenic Carboniferous Culm deposits. In medium- to high-grade metamorphic areas, the geochronological ages of the Variscan regional metamorphism or intrusive magmatic bodies constrain the age of the main Variscan deformation structures. However, these data usually provide a minimum age. Here, we present new palaeobotanical records that assign a Namurian age to the base of the Culm deposits of La Cerdanya in the eastern Pyrenees. This dating is based on the co-occurrence of the sphenopsids Archaeocalamites radiatus, Mesocalamites cistiiformis and the seed Cardiocarpus sp. The plant remains were found in sandstone facies produced by high-density turbidity flows of a deep-sea fan system. The new biostratigraphic information constrains the age of the Carboniferous Culm succession in the eastern Pyrenees.
publishDate 2018
dc.date.none.fl_str_mv 2018
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 https://hdl.handle.net/2445/145406
url https://hdl.handle.net/2445/145406
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1344/GeologicaActa2018.16.2
Geologica Acta, 2018, vol. 16, num. 2, p. 107-123
https://doi.org/10.1344/GeologicaActa2018.16.2
dc.rights.none.fl_str_mv cc-by-sa (c) Martín-Closas, Carles et al., 2018
http://creativecommons.org/licenses/by-sa/3.0/es
info:eu-repo/semantics/openAccess
rights_invalid_str_mv cc-by-sa (c) Martín-Closas, Carles et al., 2018
http://creativecommons.org/licenses/by-sa/3.0/es
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv (UB). (ICTJA). (IDEA). (UAB). (CSIC)
publisher.none.fl_str_mv (UB). (ICTJA). (IDEA). (UAB). (CSIC)
dc.source.none.fl_str_mv Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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