Magnetobiochronology of lower Pliocene marine sediments from the lower Guadalquivir Basin: insights into the tectonic evolution of the Strait of Gibraltar area

The Gibraltar Arc is a complex tectonic region, and several competing models have been proposed to explain its evolution. We studied the sedimentary fill of the Guadalquivir Basin to identify tectonic processes that were occurring when the reopening of the Strait of Gibraltar led to the reestablishm...

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Autores: Pérez-Asensio, José N. (José Noel), Larrasoaña, Juan C., Samankassou, Elias, Sierro Sánchez, Francisco Javier, García Castellanos, Daniel, Jiménez-Moreno, Gonzalo, Salazar, Ángel, Salvany i Duran, Josep Maria, Ledesma, Santiago, Mata, M. Pilar, Civis Llovera, J., Mediavilla, Carlos
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2018
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/147182
Acceso en línea:https://hdl.handle.net/2445/147182
Access Level:acceso abierto
Palabra clave:Geologia submarina
Sediments marins
Pliocè
Gibraltar, Estret de
Submarine geology
Marine sediments
Pliocene
Gibraltar, Strait of
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spelling Magnetobiochronology of lower Pliocene marine sediments from the lower Guadalquivir Basin: insights into the tectonic evolution of the Strait of Gibraltar areaPérez-Asensio, José N. (José Noel)Larrasoaña, Juan C.Samankassou, EliasSierro Sánchez, Francisco JavierGarcía Castellanos, DanielJiménez-Moreno, GonzaloSalazar, ÁngelSalvany i Duran, Josep MariaLedesma, SantiagoMata, M. PilarCivis Llovera, J.Mediavilla, CarlosGeologia submarinaSediments marinsPliocèGibraltar, Estret deSubmarine geologyMarine sedimentsPlioceneGibraltar, Strait ofThe Gibraltar Arc is a complex tectonic region, and several competing models have been proposed to explain its evolution. We studied the sedimentary fill of the Guadalquivir Basin to identify tectonic processes that were occurring when the reopening of the Strait of Gibraltar led to the reestablishment of Mediterranean outflow. We present a chronostratigraphic framework for the Lower Pliocene sediments from the lower Guadalquivir Basin (SW Spain). The updated chronology is based on magnetobiostratigraphic data from several boreholes. Our results show that the studied interval in the La Matilla core is in the early Pliocene section, providing better constraints on the sedimentary evolution of the basin during that period. Migrating depositional facies led to a younger onset of sandy deposition basinward. At the northwestern passive margin, a 0.7 m.y. period of sedimentary bypass related to a sharp decrease in sedimentation rates and lower sea levels resulted from the tectonic uplift of the forebulge. In contrast, high sedimentation rates with continuous deep-marine sedimentation are recorded at the basin center due to continuous tectonic subsidence and west-southwestward progradation of axial depositional systems. The marginal forebulge uplift, continuous tectonic basinal subsidence, and southward progradation of clinoforms in the early Pliocene can be explained by the pull of a lithospheric slab beneath the Gibraltar Arc as the Strait of Gibraltar opened. These findings are, to our knowledge, the first reported sedimentary expression of slab pull beneath the Betics related to the opening of the Strait of Gibraltar after the Messinian salinity crisis.Geological Society of America2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttps://hdl.handle.net/2445/147182Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésVersió postprint del document publicat a: https://doi.org/10.1130/B31892.1Geological Society of America Bulletin, 2018, vol. 130, num. 11-12, p. 1791-1808https://doi.org/10.1130/B31892.1(c) Geological Society of America, 2018info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1471822026-05-27T06:46:51Z
dc.title.none.fl_str_mv Magnetobiochronology of lower Pliocene marine sediments from the lower Guadalquivir Basin: insights into the tectonic evolution of the Strait of Gibraltar area
title Magnetobiochronology of lower Pliocene marine sediments from the lower Guadalquivir Basin: insights into the tectonic evolution of the Strait of Gibraltar area
spellingShingle Magnetobiochronology of lower Pliocene marine sediments from the lower Guadalquivir Basin: insights into the tectonic evolution of the Strait of Gibraltar area
Pérez-Asensio, José N. (José Noel)
Geologia submarina
Sediments marins
Pliocè
Gibraltar, Estret de
Submarine geology
Marine sediments
Pliocene
Gibraltar, Strait of
title_short Magnetobiochronology of lower Pliocene marine sediments from the lower Guadalquivir Basin: insights into the tectonic evolution of the Strait of Gibraltar area
title_full Magnetobiochronology of lower Pliocene marine sediments from the lower Guadalquivir Basin: insights into the tectonic evolution of the Strait of Gibraltar area
title_fullStr Magnetobiochronology of lower Pliocene marine sediments from the lower Guadalquivir Basin: insights into the tectonic evolution of the Strait of Gibraltar area
title_full_unstemmed Magnetobiochronology of lower Pliocene marine sediments from the lower Guadalquivir Basin: insights into the tectonic evolution of the Strait of Gibraltar area
title_sort Magnetobiochronology of lower Pliocene marine sediments from the lower Guadalquivir Basin: insights into the tectonic evolution of the Strait of Gibraltar area
dc.creator.none.fl_str_mv Pérez-Asensio, José N. (José Noel)
Larrasoaña, Juan C.
Samankassou, Elias
Sierro Sánchez, Francisco Javier
García Castellanos, Daniel
Jiménez-Moreno, Gonzalo
Salazar, Ángel
Salvany i Duran, Josep Maria
Ledesma, Santiago
Mata, M. Pilar
Civis Llovera, J.
Mediavilla, Carlos
author Pérez-Asensio, José N. (José Noel)
author_facet Pérez-Asensio, José N. (José Noel)
Larrasoaña, Juan C.
Samankassou, Elias
Sierro Sánchez, Francisco Javier
García Castellanos, Daniel
Jiménez-Moreno, Gonzalo
Salazar, Ángel
Salvany i Duran, Josep Maria
Ledesma, Santiago
Mata, M. Pilar
Civis Llovera, J.
Mediavilla, Carlos
author_role author
author2 Larrasoaña, Juan C.
Samankassou, Elias
Sierro Sánchez, Francisco Javier
García Castellanos, Daniel
Jiménez-Moreno, Gonzalo
Salazar, Ángel
Salvany i Duran, Josep Maria
Ledesma, Santiago
Mata, M. Pilar
Civis Llovera, J.
Mediavilla, Carlos
author2_role author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Geologia submarina
Sediments marins
Pliocè
Gibraltar, Estret de
Submarine geology
Marine sediments
Pliocene
Gibraltar, Strait of
topic Geologia submarina
Sediments marins
Pliocè
Gibraltar, Estret de
Submarine geology
Marine sediments
Pliocene
Gibraltar, Strait of
description The Gibraltar Arc is a complex tectonic region, and several competing models have been proposed to explain its evolution. We studied the sedimentary fill of the Guadalquivir Basin to identify tectonic processes that were occurring when the reopening of the Strait of Gibraltar led to the reestablishment of Mediterranean outflow. We present a chronostratigraphic framework for the Lower Pliocene sediments from the lower Guadalquivir Basin (SW Spain). The updated chronology is based on magnetobiostratigraphic data from several boreholes. Our results show that the studied interval in the La Matilla core is in the early Pliocene section, providing better constraints on the sedimentary evolution of the basin during that period. Migrating depositional facies led to a younger onset of sandy deposition basinward. At the northwestern passive margin, a 0.7 m.y. period of sedimentary bypass related to a sharp decrease in sedimentation rates and lower sea levels resulted from the tectonic uplift of the forebulge. In contrast, high sedimentation rates with continuous deep-marine sedimentation are recorded at the basin center due to continuous tectonic subsidence and west-southwestward progradation of axial depositional systems. The marginal forebulge uplift, continuous tectonic basinal subsidence, and southward progradation of clinoforms in the early Pliocene can be explained by the pull of a lithospheric slab beneath the Gibraltar Arc as the Strait of Gibraltar opened. These findings are, to our knowledge, the first reported sedimentary expression of slab pull beneath the Betics related to the opening of the Strait of Gibraltar after the Messinian salinity crisis.
publishDate 2018
dc.date.none.fl_str_mv 2018
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/2445/147182
url https://hdl.handle.net/2445/147182
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/10.1130/B31892.1
Geological Society of America Bulletin, 2018, vol. 130, num. 11-12, p. 1791-1808
https://doi.org/10.1130/B31892.1
dc.rights.none.fl_str_mv (c) Geological Society of America, 2018
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Geological Society of America, 2018
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Geological Society of America
publisher.none.fl_str_mv Geological Society of America
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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score 15,300724

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