Facies associations, sequence stratigraphy and timing of the earliest Jurassic peak transgression in central Spain (Iberian Range): Correlation with other Lower Jurassic sections

Facies associations and sequence stratigraphy of the Lower Jurassic shallow platform to peritidal carbonates of the Cuevas Labradas Formation (Sinemurian to Pliensbachian) have been studied in the Barranco de la Hoz section, located in the central-southern part of the Iberian Range. Four stratigraph...

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Autores: Cortés, J. E., Gómez Fernández, J. J., Goy Goy, A.
Tipo de recurso: artículo
Fecha de publicación:2009
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/26744
Acceso en línea:http://hdl.handle.net/10261/26744
Access Level:acceso abierto
Palabra clave:Lower Jurassic
Sequence stratigraphy
Facies cycles
Ammonoids
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spelling Facies associations, sequence stratigraphy and timing of the earliest Jurassic peak transgression in central Spain (Iberian Range): Correlation with other Lower Jurassic sectionsAsociaciones de facies, estratigrafía secuencial y edad del primer máximo transgresivo del Jurásico en España central (Cordillera Ibérica): Correlación con otras secciones del Jurásico InferiorCortés, J. E.Gómez Fernández, J. J.Goy Goy, A.Lower JurassicSequence stratigraphyFacies cyclesAmmonoidsFacies associations and sequence stratigraphy of the Lower Jurassic shallow platform to peritidal carbonates of the Cuevas Labradas Formation (Sinemurian to Pliensbachian) have been studied in the Barranco de la Hoz section, located in the central-southern part of the Iberian Range. Four stratigraphical units (A to D) have been differentiated. Unit A, deposited in a restricted platform, is organized in aggradational thickening- and shallowing-upward sequences. Unit B, deposited in external restricted platform environments, is composed of shallowing- and deepening-upward sequences. This unit contains Polymorphites sp., Uptonia cf. jamesoni (SOW.) and Uptonia cf. angusta (QUENST.) that characterize the upper part of the Jamesoni Zone of the Lower Pliensbachian. The transgressive peak of 3rd order Cycle LJ2-2 is located in the marly facies of unit B. Unit C is composed of shallowing-upward sequences of muddy type in the lower part, deposited in the proximal part of the shallow restricted external platform and grainy type in the upper part, representing wave-dominated bioclastic shoals. Unit D is constituted by peritidal shallowing-upward sequences deposited in shallow restricted subtidal environment of the internal platform to the intertidal and supratidal environments. The 5th order cycles constituting the 3rd order facies Cycle LJ2-2, have been grouped into 4th order cycles. The duration of the 3rd order Cycle LJ2-2 is estimated as 2.6 Myr, and the possible average duration of the 4th order cycles as 0.4 Myr. This figure is close to the most frequent duration of the long-term Milankovitch orbital eccentricity cycles. Comparison of the obtained results with other Lower Jurassic sections in Spain, Europe and with the global cycles shows that the boundary between cycles LJ-1 and LJ-2, which represents the onset of the first Jurassic transgression and the peak transgression identified in this work at the Lower Pliensbachian Jamesoni Zone as well as the boundary between cycles LJ-2 and LJ-3 seem to represent good criteria for correlation between the different palaeogeographical domains.This work has been supported by the Spanish Ministerio de Educacion y Ciencia, research project CGL2005-01765/BTE and is a contribution to the Comunidad de Madrid-UCM research groups Mesozoic Biotic Processes (910431) and Sedimentary Basin Analysis (910429).Peer reviewedConsejo Superior de Investigaciones Científicas (España)201020102009info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_65018808973 bytesapplication/pdfhttp://hdl.handle.net/10261/26744reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://www.ucm.es/info/estratig/JIG/vol_content/abstjour35_1.htminfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/267442026-05-22T06:33:51Z
dc.title.none.fl_str_mv Facies associations, sequence stratigraphy and timing of the earliest Jurassic peak transgression in central Spain (Iberian Range): Correlation with other Lower Jurassic sections
Asociaciones de facies, estratigrafía secuencial y edad del primer máximo transgresivo del Jurásico en España central (Cordillera Ibérica): Correlación con otras secciones del Jurásico Inferior
title Facies associations, sequence stratigraphy and timing of the earliest Jurassic peak transgression in central Spain (Iberian Range): Correlation with other Lower Jurassic sections
spellingShingle Facies associations, sequence stratigraphy and timing of the earliest Jurassic peak transgression in central Spain (Iberian Range): Correlation with other Lower Jurassic sections
Cortés, J. E.
Lower Jurassic
Sequence stratigraphy
Facies cycles
Ammonoids
title_short Facies associations, sequence stratigraphy and timing of the earliest Jurassic peak transgression in central Spain (Iberian Range): Correlation with other Lower Jurassic sections
title_full Facies associations, sequence stratigraphy and timing of the earliest Jurassic peak transgression in central Spain (Iberian Range): Correlation with other Lower Jurassic sections
title_fullStr Facies associations, sequence stratigraphy and timing of the earliest Jurassic peak transgression in central Spain (Iberian Range): Correlation with other Lower Jurassic sections
title_full_unstemmed Facies associations, sequence stratigraphy and timing of the earliest Jurassic peak transgression in central Spain (Iberian Range): Correlation with other Lower Jurassic sections
title_sort Facies associations, sequence stratigraphy and timing of the earliest Jurassic peak transgression in central Spain (Iberian Range): Correlation with other Lower Jurassic sections
dc.creator.none.fl_str_mv Cortés, J. E.
Gómez Fernández, J. J.
Goy Goy, A.
author Cortés, J. E.
author_facet Cortés, J. E.
Gómez Fernández, J. J.
Goy Goy, A.
author_role author
author2 Gómez Fernández, J. J.
Goy Goy, A.
author2_role author
author
dc.subject.none.fl_str_mv Lower Jurassic
Sequence stratigraphy
Facies cycles
Ammonoids
topic Lower Jurassic
Sequence stratigraphy
Facies cycles
Ammonoids
description Facies associations and sequence stratigraphy of the Lower Jurassic shallow platform to peritidal carbonates of the Cuevas Labradas Formation (Sinemurian to Pliensbachian) have been studied in the Barranco de la Hoz section, located in the central-southern part of the Iberian Range. Four stratigraphical units (A to D) have been differentiated. Unit A, deposited in a restricted platform, is organized in aggradational thickening- and shallowing-upward sequences. Unit B, deposited in external restricted platform environments, is composed of shallowing- and deepening-upward sequences. This unit contains Polymorphites sp., Uptonia cf. jamesoni (SOW.) and Uptonia cf. angusta (QUENST.) that characterize the upper part of the Jamesoni Zone of the Lower Pliensbachian. The transgressive peak of 3rd order Cycle LJ2-2 is located in the marly facies of unit B. Unit C is composed of shallowing-upward sequences of muddy type in the lower part, deposited in the proximal part of the shallow restricted external platform and grainy type in the upper part, representing wave-dominated bioclastic shoals. Unit D is constituted by peritidal shallowing-upward sequences deposited in shallow restricted subtidal environment of the internal platform to the intertidal and supratidal environments. The 5th order cycles constituting the 3rd order facies Cycle LJ2-2, have been grouped into 4th order cycles. The duration of the 3rd order Cycle LJ2-2 is estimated as 2.6 Myr, and the possible average duration of the 4th order cycles as 0.4 Myr. This figure is close to the most frequent duration of the long-term Milankovitch orbital eccentricity cycles. Comparison of the obtained results with other Lower Jurassic sections in Spain, Europe and with the global cycles shows that the boundary between cycles LJ-1 and LJ-2, which represents the onset of the first Jurassic transgression and the peak transgression identified in this work at the Lower Pliensbachian Jamesoni Zone as well as the boundary between cycles LJ-2 and LJ-3 seem to represent good criteria for correlation between the different palaeogeographical domains.
publishDate 2009
dc.date.none.fl_str_mv 2009
2010
2010
dc.type.none.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/26744
url http://hdl.handle.net/10261/26744
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://www.ucm.es/info/estratig/JIG/vol_content/abstjour35_1.htm
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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dc.publisher.none.fl_str_mv Consejo Superior de Investigaciones Científicas (España)
publisher.none.fl_str_mv Consejo Superior de Investigaciones Científicas (España)
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
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