The Coniacian sequence in the western Iberian Ranges (Spain): Stratigraphic architecture, systems tracts, biostratigraphy and high-frequency cyclicity

The Coniacian 3rd-order sequence comprises nine 4th-order parasequences (PsCo1?PsCo9). PsCo1 and PsCo2 are considered a Shelf Margin Wedge as in a Lowstand Systems Tract (LST). Parasequences PsCo3 to the lower part of PsCo6 show an aggradational and retrogradational geometry with onlap on the basal...

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Autores: Gil Gil, Javier|||0000-0002-7298-8113, García-Hidalgo Pallarés, José Francisco|||0000-0002-5662-511X, Boix Martínez, Carme|||0000-0003-0639-8163
Tipo de recurso: artículo
Fecha de publicación:2025
País:España
Institución:Universidad de Alcalá (UAH)
Repositorio:e_Buah Biblioteca Digital Universidad de Alcalá
Idioma:inglés
OAI Identifier:oai:ebuah.uah.es:10017/65288
Acceso en línea:http://hdl.handle.net/10017/65288
https://dx.doi.org/https://doi.org/10.1016/j.cretres.2025.106121
Access Level:acceso abierto
Palabra clave:Coniacian
Depositional architecture
Systems tracts
Sequence and parasequences
Iberian Range
Spain
Geología
Geology
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spelling The Coniacian sequence in the western Iberian Ranges (Spain): Stratigraphic architecture, systems tracts, biostratigraphy and high-frequency cyclicityGil Gil, Javier|||0000-0002-7298-8113García-Hidalgo Pallarés, José Francisco|||0000-0002-5662-511XBoix Martínez, Carme|||0000-0003-0639-8163ConiacianDepositional architectureSystems tractsSequence and parasequencesIberian RangeSpainGeologíaGeologyThe Coniacian 3rd-order sequence comprises nine 4th-order parasequences (PsCo1?PsCo9). PsCo1 and PsCo2 are considered a Shelf Margin Wedge as in a Lowstand Systems Tract (LST). Parasequences PsCo3 to the lower part of PsCo6 show an aggradational and retrogradational geometry with onlap on the basal boundary, representing the Transgressive Systems Tract (TST). The upper part of PsCo6 to PsCo9 represents the Highstand Systems Tract (HST) with a Highstand Normal Regression (HNR), upper part of PsCo6 and PsCo7. PsCo8 and PsCo9 show a significative retrogradation of the outer ramp facies and a Forced Regressive Systems Tract (FRST) with progradation of siliciclastic facies from emerged massif on the carbonate facies. The rapid northwards progradation during HST originates a change from a homoclinal ramp to a distally-steepened one. The Coniacian?basal Santonian age is based on the presence of Forresteria (Harleites) petrocoriensis (base of PsCo1) and of Cladoceramus undulatoplicatus (top of PsCo9). Metatissotia ewaldi, Tissotioides hispanicus, Gauthiericeras margae and Prionocycloceras iberiense zones characterize the middle Coniacian. Finally, the late Coniacian is characterised by the Protexanites burgeoisi and Hemitissotia spp. zones. The parasequences are considered to have originated from long eccentricity cycles (0.405 Myr) of Milankovitch?s band. Correlation and the reconstruction of the depositional architecture allow quantifying the sedimentary processes and trends, systems tracts, and temporal amplitude of hiatuses. The sequence at the northern outcrops spans 3.65 Myr, and only 0.81 Myr at the southern ones, with most time contained in the hiatuses of the basal (2.43 Myr) and upper (0.405 Myr) sequence boundaries.Agencia Estatal de Investigación20252025-03-21journal articlehttp://purl.org/coar/resource_type/c_6501NAhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10017/65288https://dx.doi.org/https://doi.org/10.1016/j.cretres.2025.106121reponame:e_Buah Biblioteca Digital Universidad de Alcaláinstname:Universidad de Alcalá (UAH)InglésengAgencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023 PID2023-151769NB-I00 CARACTERIZACION DE SUCESIONES SEDIMENTARIAS MIXTAS TRANSGRESIVAS DE LOS PIRINEOS MERIDIONALES: IMPLICACIONES PALEOAMBIENTALES Y DE RESERVORIOopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:ebuah.uah.es:10017/652882026-06-18T11:13:07Z
dc.title.none.fl_str_mv The Coniacian sequence in the western Iberian Ranges (Spain): Stratigraphic architecture, systems tracts, biostratigraphy and high-frequency cyclicity
title The Coniacian sequence in the western Iberian Ranges (Spain): Stratigraphic architecture, systems tracts, biostratigraphy and high-frequency cyclicity
spellingShingle The Coniacian sequence in the western Iberian Ranges (Spain): Stratigraphic architecture, systems tracts, biostratigraphy and high-frequency cyclicity
Gil Gil, Javier|||0000-0002-7298-8113
Coniacian
Depositional architecture
Systems tracts
Sequence and parasequences
Iberian Range
Spain
Geología
Geology
title_short The Coniacian sequence in the western Iberian Ranges (Spain): Stratigraphic architecture, systems tracts, biostratigraphy and high-frequency cyclicity
title_full The Coniacian sequence in the western Iberian Ranges (Spain): Stratigraphic architecture, systems tracts, biostratigraphy and high-frequency cyclicity
title_fullStr The Coniacian sequence in the western Iberian Ranges (Spain): Stratigraphic architecture, systems tracts, biostratigraphy and high-frequency cyclicity
title_full_unstemmed The Coniacian sequence in the western Iberian Ranges (Spain): Stratigraphic architecture, systems tracts, biostratigraphy and high-frequency cyclicity
title_sort The Coniacian sequence in the western Iberian Ranges (Spain): Stratigraphic architecture, systems tracts, biostratigraphy and high-frequency cyclicity
dc.creator.none.fl_str_mv Gil Gil, Javier|||0000-0002-7298-8113
García-Hidalgo Pallarés, José Francisco|||0000-0002-5662-511X
Boix Martínez, Carme|||0000-0003-0639-8163
author Gil Gil, Javier|||0000-0002-7298-8113
author_facet Gil Gil, Javier|||0000-0002-7298-8113
García-Hidalgo Pallarés, José Francisco|||0000-0002-5662-511X
Boix Martínez, Carme|||0000-0003-0639-8163
author_role author
author2 García-Hidalgo Pallarés, José Francisco|||0000-0002-5662-511X
Boix Martínez, Carme|||0000-0003-0639-8163
author2_role author
author
dc.subject.none.fl_str_mv Coniacian
Depositional architecture
Systems tracts
Sequence and parasequences
Iberian Range
Spain
Geología
Geology
topic Coniacian
Depositional architecture
Systems tracts
Sequence and parasequences
Iberian Range
Spain
Geología
Geology
description The Coniacian 3rd-order sequence comprises nine 4th-order parasequences (PsCo1?PsCo9). PsCo1 and PsCo2 are considered a Shelf Margin Wedge as in a Lowstand Systems Tract (LST). Parasequences PsCo3 to the lower part of PsCo6 show an aggradational and retrogradational geometry with onlap on the basal boundary, representing the Transgressive Systems Tract (TST). The upper part of PsCo6 to PsCo9 represents the Highstand Systems Tract (HST) with a Highstand Normal Regression (HNR), upper part of PsCo6 and PsCo7. PsCo8 and PsCo9 show a significative retrogradation of the outer ramp facies and a Forced Regressive Systems Tract (FRST) with progradation of siliciclastic facies from emerged massif on the carbonate facies. The rapid northwards progradation during HST originates a change from a homoclinal ramp to a distally-steepened one. The Coniacian?basal Santonian age is based on the presence of Forresteria (Harleites) petrocoriensis (base of PsCo1) and of Cladoceramus undulatoplicatus (top of PsCo9). Metatissotia ewaldi, Tissotioides hispanicus, Gauthiericeras margae and Prionocycloceras iberiense zones characterize the middle Coniacian. Finally, the late Coniacian is characterised by the Protexanites burgeoisi and Hemitissotia spp. zones. The parasequences are considered to have originated from long eccentricity cycles (0.405 Myr) of Milankovitch?s band. Correlation and the reconstruction of the depositional architecture allow quantifying the sedimentary processes and trends, systems tracts, and temporal amplitude of hiatuses. The sequence at the northern outcrops spans 3.65 Myr, and only 0.81 Myr at the southern ones, with most time contained in the hiatuses of the basal (2.43 Myr) and upper (0.405 Myr) sequence boundaries.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025-03-21
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
NA
http://purl.org/coar/version/c_be7fb7dd8ff6fe43
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10017/65288
https://dx.doi.org/https://doi.org/10.1016/j.cretres.2025.106121
url http://hdl.handle.net/10017/65288
https://dx.doi.org/https://doi.org/10.1016/j.cretres.2025.106121
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Agencia Estatal de Investigación http://dx.doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023 PID2023-151769NB-I00 CARACTERIZACION DE SUCESIONES SEDIMENTARIAS MIXTAS TRANSGRESIVAS DE LOS PIRINEOS MERIDIONALES: IMPLICACIONES PALEOAMBIENTALES Y DE RESERVORIO
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:e_Buah Biblioteca Digital Universidad de Alcalá
instname:Universidad de Alcalá (UAH)
instname_str Universidad de Alcalá (UAH)
reponame_str e_Buah Biblioteca Digital Universidad de Alcalá
collection e_Buah Biblioteca Digital Universidad de Alcalá
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