Volcanic and climatic controls on fluvial style in a high-energy system: The Lower Cretaceous Matasiete Formation, Golfo San Jorge basin, Argentina

Autores
Paredes, José Matildo; Foix, Nicolas; Colombo Piñol, Ferran; Nillni, Adriana Mónica; Allard, Jose Oscar; Marquillas, Rosa Argentina
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Cretaceous Chubut Group in the Golfo San Jorge Basin (Patagonia, Argentina) comprises up to 6000 m of continental sediments. At the base of the succession, an extensive saline-alkaline lacustrine unit (Pozo D-129 Fm) grades laterally towards the basin margin into the fluvial Matasiete Fm (Hauterivian?-Aptian). The Matasiete Fm comprises up to 650 m of siliciclastic and pyroclastic deposits in its type area, where three Members have been distinguished. The following facies associations were identified: 1) single fluvial channels; 2) multistorey fluvial channels; 3) proximal floodplain; 4) distal floodplain; 5) pyroclastic (ash-fall and ground-surge) deposits. Additional observations in the time-equivalent Pozo D-129 Fm provide evidence for 6) shallow lacustrine, and 7) deep-lacustrine facies associations. The floodplain association contains paleosols with abundant carbonate concretions and fine pyroclastic tuffs. Paleosols are mostly vertisols, characterized by deep desiccation cracks, slickensides and carbonate nodules. These observations, coupled with the occurrence of shallow-water oolitic grainstones in the lacustrine Pozo D-129 Fm indicate a semiarid environment. Tree trunks up to 1 m in diameter and 15 m long, preferentially located near channel margins, provide evidence for vegetated riverbanks. The exposures of the Matasiete formation in the San Bernardo Fold Belt show individual channel belts containing straight, meandering and braided channels. Evidence of changes in fluvial style attributable to base-level control has not been observed. The most dramatic changes in fluvial architecture, which were comparatively short-lived, were provoked by intermittent pyroclastic deposition on the floodplain. The reduced infiltration capacity of the floodplain and the concomitant increase in sediment load increased runoff, as well as volume and flashiness of the discharge, which favoured the development of shallow, multichannel rivers. The fluvial system abruptly changed from single, ribbon channels to a braided system, which notably increased the width/thickness ratio of sandbodies.
Fil: Paredes, José Matildo. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Comodoro. Departamento de Geología; Argentina
Fil: Foix, Nicolas. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Comodoro. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Colombo Piñol, Ferran. Universidad de Barcelona; España
Fil: Nillni, Adriana Mónica. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Comodoro. Departamento de Geología; Argentina
Fil: Allard, Jose Oscar. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Comodoro. Departamento de Geología; Argentina
Fil: Marquillas, Rosa Argentina. Universidad Nacional de Salta; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta; Argentina
Materia
ARGENTINA
CLIMATIC AND VOLCANIC CONTROLS
CRETACEOUS
FLUVIAL ARCHITECTURE
HIGH-ENERGY FLUVIAL SYSTEMS
PATAGONIA
PYROCLASTIC INPUT
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/131223
Acceder
id CONICETDig_c2ecac7995fde2961a5fa233c72c3707
oai_identifier_str oai:ri.conicet.gov.ar:11336/131223
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Volcanic and climatic controls on fluvial style in a high-energy system: The Lower Cretaceous Matasiete Formation, Golfo San Jorge basin, ArgentinaParedes, José MatildoFoix, NicolasColombo Piñol, FerranNillni, Adriana MónicaAllard, Jose OscarMarquillas, Rosa ArgentinaARGENTINACLIMATIC AND VOLCANIC CONTROLSCRETACEOUSFLUVIAL ARCHITECTUREHIGH-ENERGY FLUVIAL SYSTEMSPATAGONIAPYROCLASTIC INPUThttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Cretaceous Chubut Group in the Golfo San Jorge Basin (Patagonia, Argentina) comprises up to 6000 m of continental sediments. At the base of the succession, an extensive saline-alkaline lacustrine unit (Pozo D-129 Fm) grades laterally towards the basin margin into the fluvial Matasiete Fm (Hauterivian?-Aptian). The Matasiete Fm comprises up to 650 m of siliciclastic and pyroclastic deposits in its type area, where three Members have been distinguished. The following facies associations were identified: 1) single fluvial channels; 2) multistorey fluvial channels; 3) proximal floodplain; 4) distal floodplain; 5) pyroclastic (ash-fall and ground-surge) deposits. Additional observations in the time-equivalent Pozo D-129 Fm provide evidence for 6) shallow lacustrine, and 7) deep-lacustrine facies associations. The floodplain association contains paleosols with abundant carbonate concretions and fine pyroclastic tuffs. Paleosols are mostly vertisols, characterized by deep desiccation cracks, slickensides and carbonate nodules. These observations, coupled with the occurrence of shallow-water oolitic grainstones in the lacustrine Pozo D-129 Fm indicate a semiarid environment. Tree trunks up to 1 m in diameter and 15 m long, preferentially located near channel margins, provide evidence for vegetated riverbanks. The exposures of the Matasiete formation in the San Bernardo Fold Belt show individual channel belts containing straight, meandering and braided channels. Evidence of changes in fluvial style attributable to base-level control has not been observed. The most dramatic changes in fluvial architecture, which were comparatively short-lived, were provoked by intermittent pyroclastic deposition on the floodplain. The reduced infiltration capacity of the floodplain and the concomitant increase in sediment load increased runoff, as well as volume and flashiness of the discharge, which favoured the development of shallow, multichannel rivers. The fluvial system abruptly changed from single, ribbon channels to a braided system, which notably increased the width/thickness ratio of sandbodies.Fil: Paredes, José Matildo. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Comodoro. Departamento de Geología; ArgentinaFil: Foix, Nicolas. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Comodoro. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Colombo Piñol, Ferran. Universidad de Barcelona; EspañaFil: Nillni, Adriana Mónica. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Comodoro. Departamento de Geología; ArgentinaFil: Allard, Jose Oscar. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Comodoro. Departamento de Geología; ArgentinaFil: Marquillas, Rosa Argentina. Universidad Nacional de Salta; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta; ArgentinaElsevier Science2007-11-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/131223Paredes, José Matildo; Foix, Nicolas; Colombo Piñol, Ferran; Nillni, Adriana Mónica; Allard, Jose Oscar; et al.; Volcanic and climatic controls on fluvial style in a high-energy system: The Lower Cretaceous Matasiete Formation, Golfo San Jorge basin, Argentina; Elsevier Science; Sedimentary Geology; 202; 1-2; 15-11-2007; 96-1230037-0738CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.sedgeo.2007.05.007info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0037073807001728?via%3Dihubinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:36:49Zoai:ri.conicet.gov.ar:11336/131223instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:36:49.683CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Volcanic and climatic controls on fluvial style in a high-energy system: The Lower Cretaceous Matasiete Formation, Golfo San Jorge basin, Argentina
title Volcanic and climatic controls on fluvial style in a high-energy system: The Lower Cretaceous Matasiete Formation, Golfo San Jorge basin, Argentina
spellingShingle Volcanic and climatic controls on fluvial style in a high-energy system: The Lower Cretaceous Matasiete Formation, Golfo San Jorge basin, Argentina
Paredes, José Matildo
ARGENTINA
CLIMATIC AND VOLCANIC CONTROLS
CRETACEOUS
FLUVIAL ARCHITECTURE
HIGH-ENERGY FLUVIAL SYSTEMS
PATAGONIA
PYROCLASTIC INPUT
title_short Volcanic and climatic controls on fluvial style in a high-energy system: The Lower Cretaceous Matasiete Formation, Golfo San Jorge basin, Argentina
title_full Volcanic and climatic controls on fluvial style in a high-energy system: The Lower Cretaceous Matasiete Formation, Golfo San Jorge basin, Argentina
title_fullStr Volcanic and climatic controls on fluvial style in a high-energy system: The Lower Cretaceous Matasiete Formation, Golfo San Jorge basin, Argentina
title_full_unstemmed Volcanic and climatic controls on fluvial style in a high-energy system: The Lower Cretaceous Matasiete Formation, Golfo San Jorge basin, Argentina
title_sort Volcanic and climatic controls on fluvial style in a high-energy system: The Lower Cretaceous Matasiete Formation, Golfo San Jorge basin, Argentina
dc.creator.none.fl_str_mv Paredes, José Matildo
Foix, Nicolas
Colombo Piñol, Ferran
Nillni, Adriana Mónica
Allard, Jose Oscar
Marquillas, Rosa Argentina
author Paredes, José Matildo
author_facet Paredes, José Matildo
Foix, Nicolas
Colombo Piñol, Ferran
Nillni, Adriana Mónica
Allard, Jose Oscar
Marquillas, Rosa Argentina
author_role author
author2 Foix, Nicolas
Colombo Piñol, Ferran
Nillni, Adriana Mónica
Allard, Jose Oscar
Marquillas, Rosa Argentina
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv ARGENTINA
CLIMATIC AND VOLCANIC CONTROLS
CRETACEOUS
FLUVIAL ARCHITECTURE
HIGH-ENERGY FLUVIAL SYSTEMS
PATAGONIA
PYROCLASTIC INPUT
topic ARGENTINA
CLIMATIC AND VOLCANIC CONTROLS
CRETACEOUS
FLUVIAL ARCHITECTURE
HIGH-ENERGY FLUVIAL SYSTEMS
PATAGONIA
PYROCLASTIC INPUT
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The Cretaceous Chubut Group in the Golfo San Jorge Basin (Patagonia, Argentina) comprises up to 6000 m of continental sediments. At the base of the succession, an extensive saline-alkaline lacustrine unit (Pozo D-129 Fm) grades laterally towards the basin margin into the fluvial Matasiete Fm (Hauterivian?-Aptian). The Matasiete Fm comprises up to 650 m of siliciclastic and pyroclastic deposits in its type area, where three Members have been distinguished. The following facies associations were identified: 1) single fluvial channels; 2) multistorey fluvial channels; 3) proximal floodplain; 4) distal floodplain; 5) pyroclastic (ash-fall and ground-surge) deposits. Additional observations in the time-equivalent Pozo D-129 Fm provide evidence for 6) shallow lacustrine, and 7) deep-lacustrine facies associations. The floodplain association contains paleosols with abundant carbonate concretions and fine pyroclastic tuffs. Paleosols are mostly vertisols, characterized by deep desiccation cracks, slickensides and carbonate nodules. These observations, coupled with the occurrence of shallow-water oolitic grainstones in the lacustrine Pozo D-129 Fm indicate a semiarid environment. Tree trunks up to 1 m in diameter and 15 m long, preferentially located near channel margins, provide evidence for vegetated riverbanks. The exposures of the Matasiete formation in the San Bernardo Fold Belt show individual channel belts containing straight, meandering and braided channels. Evidence of changes in fluvial style attributable to base-level control has not been observed. The most dramatic changes in fluvial architecture, which were comparatively short-lived, were provoked by intermittent pyroclastic deposition on the floodplain. The reduced infiltration capacity of the floodplain and the concomitant increase in sediment load increased runoff, as well as volume and flashiness of the discharge, which favoured the development of shallow, multichannel rivers. The fluvial system abruptly changed from single, ribbon channels to a braided system, which notably increased the width/thickness ratio of sandbodies.
Fil: Paredes, José Matildo. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Comodoro. Departamento de Geología; Argentina
Fil: Foix, Nicolas. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Comodoro. Departamento de Geología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Colombo Piñol, Ferran. Universidad de Barcelona; España
Fil: Nillni, Adriana Mónica. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Comodoro. Departamento de Geología; Argentina
Fil: Allard, Jose Oscar. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Comodoro. Departamento de Geología; Argentina
Fil: Marquillas, Rosa Argentina. Universidad Nacional de Salta; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta; Argentina
description The Cretaceous Chubut Group in the Golfo San Jorge Basin (Patagonia, Argentina) comprises up to 6000 m of continental sediments. At the base of the succession, an extensive saline-alkaline lacustrine unit (Pozo D-129 Fm) grades laterally towards the basin margin into the fluvial Matasiete Fm (Hauterivian?-Aptian). The Matasiete Fm comprises up to 650 m of siliciclastic and pyroclastic deposits in its type area, where three Members have been distinguished. The following facies associations were identified: 1) single fluvial channels; 2) multistorey fluvial channels; 3) proximal floodplain; 4) distal floodplain; 5) pyroclastic (ash-fall and ground-surge) deposits. Additional observations in the time-equivalent Pozo D-129 Fm provide evidence for 6) shallow lacustrine, and 7) deep-lacustrine facies associations. The floodplain association contains paleosols with abundant carbonate concretions and fine pyroclastic tuffs. Paleosols are mostly vertisols, characterized by deep desiccation cracks, slickensides and carbonate nodules. These observations, coupled with the occurrence of shallow-water oolitic grainstones in the lacustrine Pozo D-129 Fm indicate a semiarid environment. Tree trunks up to 1 m in diameter and 15 m long, preferentially located near channel margins, provide evidence for vegetated riverbanks. The exposures of the Matasiete formation in the San Bernardo Fold Belt show individual channel belts containing straight, meandering and braided channels. Evidence of changes in fluvial style attributable to base-level control has not been observed. The most dramatic changes in fluvial architecture, which were comparatively short-lived, were provoked by intermittent pyroclastic deposition on the floodplain. The reduced infiltration capacity of the floodplain and the concomitant increase in sediment load increased runoff, as well as volume and flashiness of the discharge, which favoured the development of shallow, multichannel rivers. The fluvial system abruptly changed from single, ribbon channels to a braided system, which notably increased the width/thickness ratio of sandbodies.
publishDate 2007
dc.date.none.fl_str_mv 2007-11-15
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 http://hdl.handle.net/11336/131223
Paredes, José Matildo; Foix, Nicolas; Colombo Piñol, Ferran; Nillni, Adriana Mónica; Allard, Jose Oscar; et al.; Volcanic and climatic controls on fluvial style in a high-energy system: The Lower Cretaceous Matasiete Formation, Golfo San Jorge basin, Argentina; Elsevier Science; Sedimentary Geology; 202; 1-2; 15-11-2007; 96-123
0037-0738
CONICET Digital
CONICET
url http://hdl.handle.net/11336/131223
identifier_str_mv Paredes, José Matildo; Foix, Nicolas; Colombo Piñol, Ferran; Nillni, Adriana Mónica; Allard, Jose Oscar; et al.; Volcanic and climatic controls on fluvial style in a high-energy system: The Lower Cretaceous Matasiete Formation, Golfo San Jorge basin, Argentina; Elsevier Science; Sedimentary Geology; 202; 1-2; 15-11-2007; 96-123
0037-0738
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.sedgeo.2007.05.007
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0037073807001728?via%3Dihub
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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