Source-to-sink analysis of continental rift sedimentation: Triassic Cuyo basin, Precordillera Argentina

Autores
Teixeira, Bárbara M. N.; Astini, Ricardo A.; Gómez, Fernando J.; Morales, Norberto; Pimentel, Márcio M.
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Fil: Teixeira, Bárbara M. N. Petrobras; Brasil.
Fil: Astini, Ricardo A. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.
Fil: Astini, Ricardo A. Universidad Nacional de Córdoba; Argentina.
Fil: Gómez, Fernando J. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.
Fil: Gómez, Fernando J. Universidad Nacional de Córdoba; Argentina.
Fil: Morales, Norberto. Universidade Estadual Paulista. Instituto de Geociências e Ciências Exatas, UNESP; Brasil.
Fil: Pimentel, Márcio M. Universidade de Brasília. Instituto de Geociências; Brasil.
The northernmost outcrops of the Triassic extensional Cuyo basin inwestern Argentina reveal a basal coarse conglomerateoverlain by a thinning-fining upward siliciclastic red-bedded section with subordinated tuffs andmicrobial-rich carbonates (Cerro Puntudo Formation), unconformably covered by a second coarse conglomerate(El Relincho Formation),whichwere previously interpreted as two rifting events. An integrated analysis of faciesassociations, stacking patterns, paleocurrent and provenancewas carried out in order to reveal the rift sedimentationusing a source-to-sink approach. Besides the traditional controls in continental basins (e.g., sedimentation,tectonics and climate), this study considers possible drainage pattern evolution in order to differentiate isolatedversus integrated depocenter stages. U-Pb zircon data corroborate our analysis and reveal a volcanic basementsource of 256.8 ± 3.5 Ma (Permian/Lopingian) and a sedimentation age of 249.8 ± 2.5 Ma (Early Triassic) fora tuff interbedded within the Cerro Puntudo Formation, complementing previous age of 243.8±1.9 Ma (MiddleTriassic) at the top of this unit. Stratigraphic stacking allows the interpretation of three evolutionary stages. A firststage, represented by thick massive boulder-volcanic-rich conglomerates characterizing alluvial fan deposition,indicates strong tectonic activity of border faults (first rifting event). These features suggest high surface gradientand high available space controlling accommodation and dispersal of gravity and debris-flow deposits.Paleocurrents to the east reveal largely north-south normal faults located to the west and sediment supplyfroma proximal volcanic source area. A second stage, represented by a notable fining-thinning upward facies, includingfluvial and palustrine (stromatolites with pedogenetic features) deposits, indicates a transition to tectonicquiescence. These facies associations developed in a context of low sedimentation rate, limited tectonicrelief and low accommodation space. A third stage is represented by greenish well-rounded coarse-grainedpolymictic conglomerates of El Relincho Formation that unconformably truncate the Cerro Puntudo Formation.These conglomerates are interpreted as perennial braided fluvial systems (with paleocurrents to the northwest)indicating drainage reorganization primarily influenced by climate change and combined tectonic reactivation,previously considered the second rifting event. Climate change affected sediment delivery and allowed regionallyconnectivity and overfilling of the depocenters. In this last stage, northwest axial transport fromvariable sourceswithin the Precordillera (to the southeast) is inferred from provenance analysis indicating open linkeddepocenters.This study suggests a newstratigraphic correlation for the northern part of the Cuyo basin, implyingthat during the first rifting event a semi-arid climate prevailed with development of isolated and independentdepocenters (first and second stages), whereas above the unconformity initiating the second rifting event(third stage) depocenters were interconnected. In the light of our source-to-sink analysis, such paleogeographicchange allowed overfilling and laterally linkage of separate half-grabens along the Cuyo basin. Whereas tectonicreactivation may better explain renewed conglomerate deposition, climate change toward more humid conditionsallowed previously separated depocenters to be connected through axial drainages.
https://linkinghub.elsevier.com/retrieve/pii/S0037073818301945
publishedVersion
Fil: Teixeira, Bárbara M. N. Petrobras; Brasil.
Fil: Astini, Ricardo A. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.
Fil: Astini, Ricardo A. Universidad Nacional de Córdoba; Argentina.
Fil: Gómez, Fernando J. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.
Fil: Gómez, Fernando J. Universidad Nacional de Córdoba; Argentina.
Fil: Morales, Norberto. Universidade Estadual Paulista. Instituto de Geociências e Ciências Exatas, UNESP; Brasil.
Fil: Pimentel, Márcio M. Universidade de Brasília. Instituto de Geociências; Brasil.
Otras Ciencias de la Tierra y relacionadas con el Medio Ambiente
Materia
Rifting
Provenance
Geology
NATURAL SCIENCES::Earth sciences
Nivel de accesibilidad
acceso abierto
Condiciones de uso
Repositorio
Repositorio Digital Universitario (UNC)
Institución
Universidad Nacional de Córdoba
OAI Identificador
oai:rdu.unc.edu.ar:11086/563385
Acceder
id RDUUNC_5877386c05fbd729062c9354e0bebbd0
oai_identifier_str oai:rdu.unc.edu.ar:11086/563385
network_acronym_str RDUUNC
repository_id_str 2572
network_name_str Repositorio Digital Universitario (UNC)
spelling Source-to-sink analysis of continental rift sedimentation: Triassic Cuyo basin, Precordillera ArgentinaTeixeira, Bárbara M. N.Astini, Ricardo A.Gómez, Fernando J.Morales, NorbertoPimentel, Márcio M.RiftingProvenanceGeologyNATURAL SCIENCES::Earth sciencesFil: Teixeira, Bárbara M. N. Petrobras; Brasil.Fil: Astini, Ricardo A. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.Fil: Astini, Ricardo A. Universidad Nacional de Córdoba; Argentina.Fil: Gómez, Fernando J. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.Fil: Gómez, Fernando J. Universidad Nacional de Córdoba; Argentina.Fil: Morales, Norberto. Universidade Estadual Paulista. Instituto de Geociências e Ciências Exatas, UNESP; Brasil.Fil: Pimentel, Márcio M. Universidade de Brasília. Instituto de Geociências; Brasil.The northernmost outcrops of the Triassic extensional Cuyo basin inwestern Argentina reveal a basal coarse conglomerateoverlain by a thinning-fining upward siliciclastic red-bedded section with subordinated tuffs andmicrobial-rich carbonates (Cerro Puntudo Formation), unconformably covered by a second coarse conglomerate(El Relincho Formation),whichwere previously interpreted as two rifting events. An integrated analysis of faciesassociations, stacking patterns, paleocurrent and provenancewas carried out in order to reveal the rift sedimentationusing a source-to-sink approach. Besides the traditional controls in continental basins (e.g., sedimentation,tectonics and climate), this study considers possible drainage pattern evolution in order to differentiate isolatedversus integrated depocenter stages. U-Pb zircon data corroborate our analysis and reveal a volcanic basementsource of 256.8 ± 3.5 Ma (Permian/Lopingian) and a sedimentation age of 249.8 ± 2.5 Ma (Early Triassic) fora tuff interbedded within the Cerro Puntudo Formation, complementing previous age of 243.8±1.9 Ma (MiddleTriassic) at the top of this unit. Stratigraphic stacking allows the interpretation of three evolutionary stages. A firststage, represented by thick massive boulder-volcanic-rich conglomerates characterizing alluvial fan deposition,indicates strong tectonic activity of border faults (first rifting event). These features suggest high surface gradientand high available space controlling accommodation and dispersal of gravity and debris-flow deposits.Paleocurrents to the east reveal largely north-south normal faults located to the west and sediment supplyfroma proximal volcanic source area. A second stage, represented by a notable fining-thinning upward facies, includingfluvial and palustrine (stromatolites with pedogenetic features) deposits, indicates a transition to tectonicquiescence. These facies associations developed in a context of low sedimentation rate, limited tectonicrelief and low accommodation space. A third stage is represented by greenish well-rounded coarse-grainedpolymictic conglomerates of El Relincho Formation that unconformably truncate the Cerro Puntudo Formation.These conglomerates are interpreted as perennial braided fluvial systems (with paleocurrents to the northwest)indicating drainage reorganization primarily influenced by climate change and combined tectonic reactivation,previously considered the second rifting event. Climate change affected sediment delivery and allowed regionallyconnectivity and overfilling of the depocenters. In this last stage, northwest axial transport fromvariable sourceswithin the Precordillera (to the southeast) is inferred from provenance analysis indicating open linkeddepocenters.This study suggests a newstratigraphic correlation for the northern part of the Cuyo basin, implyingthat during the first rifting event a semi-arid climate prevailed with development of isolated and independentdepocenters (first and second stages), whereas above the unconformity initiating the second rifting event(third stage) depocenters were interconnected. In the light of our source-to-sink analysis, such paleogeographicchange allowed overfilling and laterally linkage of separate half-grabens along the Cuyo basin. Whereas tectonicreactivation may better explain renewed conglomerate deposition, climate change toward more humid conditionsallowed previously separated depocenters to be connected through axial drainages.https://linkinghub.elsevier.com/retrieve/pii/S0037073818301945publishedVersionFil: Teixeira, Bárbara M. N. Petrobras; Brasil.Fil: Astini, Ricardo A. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.Fil: Astini, Ricardo A. Universidad Nacional de Córdoba; Argentina.Fil: Gómez, Fernando J. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.Fil: Gómez, Fernando J. Universidad Nacional de Córdoba; Argentina.Fil: Morales, Norberto. Universidade Estadual Paulista. Instituto de Geociências e Ciências Exatas, UNESP; Brasil.Fil: Pimentel, Márcio M. Universidade de Brasília. Instituto de Geociências; Brasil.Otras Ciencias de la Tierra y relacionadas con el Medio Ambiente2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf0037-0738http://hdl.handle.net/11086/563385enginfo:eu-repo/semantics/openAccessreponame:Repositorio Digital Universitario (UNC)instname:Universidad Nacional de Córdobainstacron:UNC2026-10-29T10:15:57Zoai:rdu.unc.edu.ar:11086/563385Institucionalhttps://rdu.unc.edu.ar/Universidad públicaNo correspondehttp://rdu.unc.edu.ar/oai/snrdoca.unc@gmail.comArgentinaNo correspondeNo correspondeNo correspondeopendoar:25722026-10-29 10:15:58.106Repositorio Digital Universitario (UNC) - Universidad Nacional de Córdobafalse
dc.title.none.fl_str_mv Source-to-sink analysis of continental rift sedimentation: Triassic Cuyo basin, Precordillera Argentina
title Source-to-sink analysis of continental rift sedimentation: Triassic Cuyo basin, Precordillera Argentina
spellingShingle Source-to-sink analysis of continental rift sedimentation: Triassic Cuyo basin, Precordillera Argentina
Teixeira, Bárbara M. N.
Rifting
Provenance
Geology
NATURAL SCIENCES::Earth sciences
title_short Source-to-sink analysis of continental rift sedimentation: Triassic Cuyo basin, Precordillera Argentina
title_full Source-to-sink analysis of continental rift sedimentation: Triassic Cuyo basin, Precordillera Argentina
title_fullStr Source-to-sink analysis of continental rift sedimentation: Triassic Cuyo basin, Precordillera Argentina
title_full_unstemmed Source-to-sink analysis of continental rift sedimentation: Triassic Cuyo basin, Precordillera Argentina
title_sort Source-to-sink analysis of continental rift sedimentation: Triassic Cuyo basin, Precordillera Argentina
dc.creator.none.fl_str_mv Teixeira, Bárbara M. N.
Astini, Ricardo A.
Gómez, Fernando J.
Morales, Norberto
Pimentel, Márcio M.
author Teixeira, Bárbara M. N.
author_facet Teixeira, Bárbara M. N.
Astini, Ricardo A.
Gómez, Fernando J.
Morales, Norberto
Pimentel, Márcio M.
author_role author
author2 Astini, Ricardo A.
Gómez, Fernando J.
Morales, Norberto
Pimentel, Márcio M.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Rifting
Provenance
Geology
NATURAL SCIENCES::Earth sciences
topic Rifting
Provenance
Geology
NATURAL SCIENCES::Earth sciences
dc.description.none.fl_txt_mv Fil: Teixeira, Bárbara M. N. Petrobras; Brasil.
Fil: Astini, Ricardo A. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.
Fil: Astini, Ricardo A. Universidad Nacional de Córdoba; Argentina.
Fil: Gómez, Fernando J. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.
Fil: Gómez, Fernando J. Universidad Nacional de Córdoba; Argentina.
Fil: Morales, Norberto. Universidade Estadual Paulista. Instituto de Geociências e Ciências Exatas, UNESP; Brasil.
Fil: Pimentel, Márcio M. Universidade de Brasília. Instituto de Geociências; Brasil.
The northernmost outcrops of the Triassic extensional Cuyo basin inwestern Argentina reveal a basal coarse conglomerateoverlain by a thinning-fining upward siliciclastic red-bedded section with subordinated tuffs andmicrobial-rich carbonates (Cerro Puntudo Formation), unconformably covered by a second coarse conglomerate(El Relincho Formation),whichwere previously interpreted as two rifting events. An integrated analysis of faciesassociations, stacking patterns, paleocurrent and provenancewas carried out in order to reveal the rift sedimentationusing a source-to-sink approach. Besides the traditional controls in continental basins (e.g., sedimentation,tectonics and climate), this study considers possible drainage pattern evolution in order to differentiate isolatedversus integrated depocenter stages. U-Pb zircon data corroborate our analysis and reveal a volcanic basementsource of 256.8 ± 3.5 Ma (Permian/Lopingian) and a sedimentation age of 249.8 ± 2.5 Ma (Early Triassic) fora tuff interbedded within the Cerro Puntudo Formation, complementing previous age of 243.8±1.9 Ma (MiddleTriassic) at the top of this unit. Stratigraphic stacking allows the interpretation of three evolutionary stages. A firststage, represented by thick massive boulder-volcanic-rich conglomerates characterizing alluvial fan deposition,indicates strong tectonic activity of border faults (first rifting event). These features suggest high surface gradientand high available space controlling accommodation and dispersal of gravity and debris-flow deposits.Paleocurrents to the east reveal largely north-south normal faults located to the west and sediment supplyfroma proximal volcanic source area. A second stage, represented by a notable fining-thinning upward facies, includingfluvial and palustrine (stromatolites with pedogenetic features) deposits, indicates a transition to tectonicquiescence. These facies associations developed in a context of low sedimentation rate, limited tectonicrelief and low accommodation space. A third stage is represented by greenish well-rounded coarse-grainedpolymictic conglomerates of El Relincho Formation that unconformably truncate the Cerro Puntudo Formation.These conglomerates are interpreted as perennial braided fluvial systems (with paleocurrents to the northwest)indicating drainage reorganization primarily influenced by climate change and combined tectonic reactivation,previously considered the second rifting event. Climate change affected sediment delivery and allowed regionallyconnectivity and overfilling of the depocenters. In this last stage, northwest axial transport fromvariable sourceswithin the Precordillera (to the southeast) is inferred from provenance analysis indicating open linkeddepocenters.This study suggests a newstratigraphic correlation for the northern part of the Cuyo basin, implyingthat during the first rifting event a semi-arid climate prevailed with development of isolated and independentdepocenters (first and second stages), whereas above the unconformity initiating the second rifting event(third stage) depocenters were interconnected. In the light of our source-to-sink analysis, such paleogeographicchange allowed overfilling and laterally linkage of separate half-grabens along the Cuyo basin. Whereas tectonicreactivation may better explain renewed conglomerate deposition, climate change toward more humid conditionsallowed previously separated depocenters to be connected through axial drainages.
https://linkinghub.elsevier.com/retrieve/pii/S0037073818301945
publishedVersion
Fil: Teixeira, Bárbara M. N. Petrobras; Brasil.
Fil: Astini, Ricardo A. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.
Fil: Astini, Ricardo A. Universidad Nacional de Córdoba; Argentina.
Fil: Gómez, Fernando J. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro de Investigaciones en Ciencias de la Tierra; Argentina.
Fil: Gómez, Fernando J. Universidad Nacional de Córdoba; Argentina.
Fil: Morales, Norberto. Universidade Estadual Paulista. Instituto de Geociências e Ciências Exatas, UNESP; Brasil.
Fil: Pimentel, Márcio M. Universidade de Brasília. Instituto de Geociências; Brasil.
Otras Ciencias de la Tierra y relacionadas con el Medio Ambiente
description Fil: Teixeira, Bárbara M. N. Petrobras; Brasil.
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
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv 0037-0738
http://hdl.handle.net/11086/563385
identifier_str_mv 0037-0738
url http://hdl.handle.net/11086/563385
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositorio Digital Universitario (UNC)
instname:Universidad Nacional de Córdoba
instacron:UNC
reponame_str Repositorio Digital Universitario (UNC)
collection Repositorio Digital Universitario (UNC)
instname_str Universidad Nacional de Córdoba
instacron_str UNC
institution UNC
repository.name.fl_str_mv Repositorio Digital Universitario (UNC) - Universidad Nacional de Córdoba
repository.mail.fl_str_mv oca.unc@gmail.com
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