Stratigraphy of the chubut group (Cretaceous, Golfo San Jorge Basin, Argentina): impacts of allogenic controls on the alluvial macro-architecture

Autores
Paredes, José; Foix, Nicolás; Allard, José; Lizzoli, Sabrina; Olazábal, Sabrina; Tunik, Maisa
Año de publicación
2025
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Fil: Paredes, José. Departamento de Geología, Facultad de Ciencias Naturales y Ciencias de la Salud (FCNyCS),Universidad Nacional de la Patagonia “San Juan Bosco”. Argentina.
Fil: Foix, Nicolás. Departamento de Geología, Facultad de Ciencias Naturales y Ciencias de la Salud (FCNyCS),Universidad Nacional de la Patagonia “San Juan Bosco”. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Argentina.
Fil: Allard, José. Departamento de Geología, Facultad de Ciencias Naturales y Ciencias de la Salud (FCNyCS),Universidad Nacional de la Patagonia “San Juan Bosco”. Argentina.
Fil: Lizzoli, Sabrina. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Centro de Investigaciones Geológicas (CIG), Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata (FCNyM–UNLP). Argentina.
Fil: Olazábal, Sabrina. Departamento de Geología, Facultad de Ciencias Naturales y Ciencias de la Salud (FCNyCS),Universidad Nacional de la Patagonia “San Juan Bosco”. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Argentina.
Fil: Tunik, Maisa. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Instituto de Investigación en Paleobiología y Geología (IIPG), Universidad Nacional de Río Negro (UNRN). Argentina.
The Chubut Group (Cretaceous, Golfo San Jorge Basin) is a continental succession up to 6,000 meters thick, preserved in an endorheic basin. Its basal depositional system includes the fluvial Matasiete Formation and the lacustrine Pozo D-129 Formation, the main source rock for the hydrocarbons of the basin. The Matasiete Formation (Aptian) represents a high-accommodation, exotic fluvial system with headwaters in the present-day Cañadón Asfalto Basin (CAB), referred to as the Los Adobes Formation. Sediment was transported southward to a saline-alkaline lake (Pozo D-129 Formation) through N-S sedimentary corridors in an extensional setting. The overlying depositional system is integrated by the Castillo and Mina del Carmen formations (Albian-Cenomanian?), and it consists of reworked volcaniclastic particles in drainage catchments within a W-E elongated extensional basin, disconnected from the CAB. The subsequent depositional system includes the Bajo Barreal Formation (CenomanianConiacian?), containing the main hydrocarbon reservoirs. It shows varied stacking density in hundreds of meters thick cycles, linked to climatic cycles. Low netto-gross fluvial stratigraphy featuring small-scale channel belts and paleosols indicates a temperate, subhumid/humid climate with seasonal rainfall. High net-to-gross fluvial stratigraphy records larger-scale channel belts interbedded with paleosols developed in a warmer, humid climate with perennial rainfall. The uppermost depositional system includes the paleosol-rich Laguna Palacios Formation at basin margins, with maximum thicknesses along syncline axes, and the red-colored, anastomosing fluvial systems of the Maastrichtian Colhué Huapi Formation that fill incised valleys. Both units are equivalent to the upper strata of Meseta Espinosa and El Trébol formations in the subsurface, showing degradational features marking the onset of surface uplift in the San Bernardo Fold Belt.
The Chubut Group (Cretaceous, Golfo San Jorge Basin) is a continental succession up to 6,000 meters thick, preserved in an endorheic basin. Its basal depositional system includes the fluvial Matasiete Formation and the lacustrine Pozo D-129 Formation, the main source rock for the hydrocarbons of the basin. The Matasiete Formation (Aptian) represents a high-accommodation, exotic fluvial system with headwaters in the present-day Cañadón Asfalto Basin (CAB), referred to as the Los Adobes Formation. Sediment was transported southward to a saline-alkaline lake (Pozo D-129 Formation) through N-S sedimentary corridors in an extensional setting. The overlying depositional system is integrated by the Castillo and Mina del Carmen formations (Albian-Cenomanian?), and it consists of reworked volcaniclastic particles in drainage catchments within a W-E elongated extensional basin, disconnected from the CAB. The subsequent depositional system includes the Bajo Barreal Formation (CenomanianConiacian?), containing the main hydrocarbon reservoirs. It shows varied stacking density in hundreds of meters thick cycles, linked to climatic cycles. Low netto-gross fluvial stratigraphy featuring small-scale channel belts and paleosols indicates a temperate, subhumid/humid climate with seasonal rainfall. High net-to-gross fluvial stratigraphy records larger-scale channel belts interbedded with paleosols developed in a warmer, humid climate with perennial rainfall. The uppermost depositional system includes the paleosol-rich Laguna Palacios Formation at basin margins, with maximum thicknesses along syncline axes, and the red-colored, anastomosing fluvial systems of the Maastrichtian Colhué Huapi Formation that fill incised valleys. Both units are equivalent to the upper strata of Meseta Espinosa and El Trébol formations in the subsurface, showing degradational features marking the onset of surface uplift in the San Bernardo Fold Belt.
Materia
Ciencias Exactas y Naturales
Endorheic basin
Cretaceous fluvial systems
Alluvial architecture
Allogenic controls
Patagonia
Ciencias Exactas y Naturales
Nivel de accesibilidad
acceso embargado
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
RID-UNRN (UNRN)
Institución
Universidad Nacional de Río Negro
OAI Identificador
oai:rid.unrn.edu.ar:20.500.12049/13519

id RIDUNRN_48c37404407c62f3bf2c0a6e7bd0802f
oai_identifier_str oai:rid.unrn.edu.ar:20.500.12049/13519
network_acronym_str RIDUNRN
repository_id_str 4369
network_name_str RID-UNRN (UNRN)
spelling Stratigraphy of the chubut group (Cretaceous, Golfo San Jorge Basin, Argentina): impacts of allogenic controls on the alluvial macro-architectureParedes, JoséFoix, NicolásAllard, JoséLizzoli, SabrinaOlazábal, SabrinaTunik, MaisaCiencias Exactas y NaturalesEndorheic basinCretaceous fluvial systemsAlluvial architectureAllogenic controlsPatagoniaCiencias Exactas y NaturalesFil: Paredes, José. Departamento de Geología, Facultad de Ciencias Naturales y Ciencias de la Salud (FCNyCS),Universidad Nacional de la Patagonia “San Juan Bosco”. Argentina.Fil: Foix, Nicolás. Departamento de Geología, Facultad de Ciencias Naturales y Ciencias de la Salud (FCNyCS),Universidad Nacional de la Patagonia “San Juan Bosco”. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Argentina.Fil: Allard, José. Departamento de Geología, Facultad de Ciencias Naturales y Ciencias de la Salud (FCNyCS),Universidad Nacional de la Patagonia “San Juan Bosco”. Argentina.Fil: Lizzoli, Sabrina. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Centro de Investigaciones Geológicas (CIG), Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata (FCNyM–UNLP). Argentina.Fil: Olazábal, Sabrina. Departamento de Geología, Facultad de Ciencias Naturales y Ciencias de la Salud (FCNyCS),Universidad Nacional de la Patagonia “San Juan Bosco”. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Argentina.Fil: Tunik, Maisa. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Instituto de Investigación en Paleobiología y Geología (IIPG), Universidad Nacional de Río Negro (UNRN). Argentina.The Chubut Group (Cretaceous, Golfo San Jorge Basin) is a continental succession up to 6,000 meters thick, preserved in an endorheic basin. Its basal depositional system includes the fluvial Matasiete Formation and the lacustrine Pozo D-129 Formation, the main source rock for the hydrocarbons of the basin. The Matasiete Formation (Aptian) represents a high-accommodation, exotic fluvial system with headwaters in the present-day Cañadón Asfalto Basin (CAB), referred to as the Los Adobes Formation. Sediment was transported southward to a saline-alkaline lake (Pozo D-129 Formation) through N-S sedimentary corridors in an extensional setting. The overlying depositional system is integrated by the Castillo and Mina del Carmen formations (Albian-Cenomanian?), and it consists of reworked volcaniclastic particles in drainage catchments within a W-E elongated extensional basin, disconnected from the CAB. The subsequent depositional system includes the Bajo Barreal Formation (CenomanianConiacian?), containing the main hydrocarbon reservoirs. It shows varied stacking density in hundreds of meters thick cycles, linked to climatic cycles. Low netto-gross fluvial stratigraphy featuring small-scale channel belts and paleosols indicates a temperate, subhumid/humid climate with seasonal rainfall. High net-to-gross fluvial stratigraphy records larger-scale channel belts interbedded with paleosols developed in a warmer, humid climate with perennial rainfall. The uppermost depositional system includes the paleosol-rich Laguna Palacios Formation at basin margins, with maximum thicknesses along syncline axes, and the red-colored, anastomosing fluvial systems of the Maastrichtian Colhué Huapi Formation that fill incised valleys. Both units are equivalent to the upper strata of Meseta Espinosa and El Trébol formations in the subsurface, showing degradational features marking the onset of surface uplift in the San Bernardo Fold Belt.The Chubut Group (Cretaceous, Golfo San Jorge Basin) is a continental succession up to 6,000 meters thick, preserved in an endorheic basin. Its basal depositional system includes the fluvial Matasiete Formation and the lacustrine Pozo D-129 Formation, the main source rock for the hydrocarbons of the basin. The Matasiete Formation (Aptian) represents a high-accommodation, exotic fluvial system with headwaters in the present-day Cañadón Asfalto Basin (CAB), referred to as the Los Adobes Formation. Sediment was transported southward to a saline-alkaline lake (Pozo D-129 Formation) through N-S sedimentary corridors in an extensional setting. The overlying depositional system is integrated by the Castillo and Mina del Carmen formations (Albian-Cenomanian?), and it consists of reworked volcaniclastic particles in drainage catchments within a W-E elongated extensional basin, disconnected from the CAB. The subsequent depositional system includes the Bajo Barreal Formation (CenomanianConiacian?), containing the main hydrocarbon reservoirs. It shows varied stacking density in hundreds of meters thick cycles, linked to climatic cycles. Low netto-gross fluvial stratigraphy featuring small-scale channel belts and paleosols indicates a temperate, subhumid/humid climate with seasonal rainfall. High net-to-gross fluvial stratigraphy records larger-scale channel belts interbedded with paleosols developed in a warmer, humid climate with perennial rainfall. The uppermost depositional system includes the paleosol-rich Laguna Palacios Formation at basin margins, with maximum thicknesses along syncline axes, and the red-colored, anastomosing fluvial systems of the Maastrichtian Colhué Huapi Formation that fill incised valleys. Both units are equivalent to the upper strata of Meseta Espinosa and El Trébol formations in the subsurface, showing degradational features marking the onset of surface uplift in the San Bernardo Fold Belt.Asociación Argentina de Sedimentologíainfo:eu-repo/date/embargoEnd/2027-01-012025info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfParedes, J. M., Foix, N., Allard, J. O., Lizzoli, S., Olazábal, S. X., and Tunik, M. A. 2025. Stratigraphy of the Chubut Group (Cretaceous, Golfo San Jorge Basin, Argentina): impacts of allogenic controls on the alluvial macro-architecture. Latin American Journal of Sedimentology and Basin Analysis. 32 (1): 32-431851-4979http://rid.unrn.edu.ar/handle/20.500.12049/13519enghttps://lajsba.sedimentologia.org.ar/lajsba32Latin American Journal of Sedimentology and Basin Analysisinfo:eu-repo/semantics/embargoedAccesshttps://creativecommons.org/licenses/by-nc-sa/4.0/reponame:RID-UNRN (UNRN)instname:Universidad Nacional de Río Negro2025-09-29T14:29:23Zoai:rid.unrn.edu.ar:20.500.12049/13519instacron:UNRNInstitucionalhttps://rid.unrn.edu.ar/jspui/Universidad públicaNo correspondehttps://rid.unrn.edu.ar/oai/snrdrid@unrn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:43692025-09-29 14:29:23.92RID-UNRN (UNRN) - Universidad Nacional de Río Negrofalse
dc.title.none.fl_str_mv Stratigraphy of the chubut group (Cretaceous, Golfo San Jorge Basin, Argentina): impacts of allogenic controls on the alluvial macro-architecture
title Stratigraphy of the chubut group (Cretaceous, Golfo San Jorge Basin, Argentina): impacts of allogenic controls on the alluvial macro-architecture
spellingShingle Stratigraphy of the chubut group (Cretaceous, Golfo San Jorge Basin, Argentina): impacts of allogenic controls on the alluvial macro-architecture
Paredes, José
Ciencias Exactas y Naturales
Endorheic basin
Cretaceous fluvial systems
Alluvial architecture
Allogenic controls
Patagonia
Ciencias Exactas y Naturales
title_short Stratigraphy of the chubut group (Cretaceous, Golfo San Jorge Basin, Argentina): impacts of allogenic controls on the alluvial macro-architecture
title_full Stratigraphy of the chubut group (Cretaceous, Golfo San Jorge Basin, Argentina): impacts of allogenic controls on the alluvial macro-architecture
title_fullStr Stratigraphy of the chubut group (Cretaceous, Golfo San Jorge Basin, Argentina): impacts of allogenic controls on the alluvial macro-architecture
title_full_unstemmed Stratigraphy of the chubut group (Cretaceous, Golfo San Jorge Basin, Argentina): impacts of allogenic controls on the alluvial macro-architecture
title_sort Stratigraphy of the chubut group (Cretaceous, Golfo San Jorge Basin, Argentina): impacts of allogenic controls on the alluvial macro-architecture
dc.creator.none.fl_str_mv Paredes, José
Foix, Nicolás
Allard, José
Lizzoli, Sabrina
Olazábal, Sabrina
Tunik, Maisa
author Paredes, José
author_facet Paredes, José
Foix, Nicolás
Allard, José
Lizzoli, Sabrina
Olazábal, Sabrina
Tunik, Maisa
author_role author
author2 Foix, Nicolás
Allard, José
Lizzoli, Sabrina
Olazábal, Sabrina
Tunik, Maisa
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas y Naturales
Endorheic basin
Cretaceous fluvial systems
Alluvial architecture
Allogenic controls
Patagonia
Ciencias Exactas y Naturales
topic Ciencias Exactas y Naturales
Endorheic basin
Cretaceous fluvial systems
Alluvial architecture
Allogenic controls
Patagonia
Ciencias Exactas y Naturales
dc.description.none.fl_txt_mv Fil: Paredes, José. Departamento de Geología, Facultad de Ciencias Naturales y Ciencias de la Salud (FCNyCS),Universidad Nacional de la Patagonia “San Juan Bosco”. Argentina.
Fil: Foix, Nicolás. Departamento de Geología, Facultad de Ciencias Naturales y Ciencias de la Salud (FCNyCS),Universidad Nacional de la Patagonia “San Juan Bosco”. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Argentina.
Fil: Allard, José. Departamento de Geología, Facultad de Ciencias Naturales y Ciencias de la Salud (FCNyCS),Universidad Nacional de la Patagonia “San Juan Bosco”. Argentina.
Fil: Lizzoli, Sabrina. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Centro de Investigaciones Geológicas (CIG), Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata (FCNyM–UNLP). Argentina.
Fil: Olazábal, Sabrina. Departamento de Geología, Facultad de Ciencias Naturales y Ciencias de la Salud (FCNyCS),Universidad Nacional de la Patagonia “San Juan Bosco”. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Argentina.
Fil: Tunik, Maisa. Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Instituto de Investigación en Paleobiología y Geología (IIPG), Universidad Nacional de Río Negro (UNRN). Argentina.
The Chubut Group (Cretaceous, Golfo San Jorge Basin) is a continental succession up to 6,000 meters thick, preserved in an endorheic basin. Its basal depositional system includes the fluvial Matasiete Formation and the lacustrine Pozo D-129 Formation, the main source rock for the hydrocarbons of the basin. The Matasiete Formation (Aptian) represents a high-accommodation, exotic fluvial system with headwaters in the present-day Cañadón Asfalto Basin (CAB), referred to as the Los Adobes Formation. Sediment was transported southward to a saline-alkaline lake (Pozo D-129 Formation) through N-S sedimentary corridors in an extensional setting. The overlying depositional system is integrated by the Castillo and Mina del Carmen formations (Albian-Cenomanian?), and it consists of reworked volcaniclastic particles in drainage catchments within a W-E elongated extensional basin, disconnected from the CAB. The subsequent depositional system includes the Bajo Barreal Formation (CenomanianConiacian?), containing the main hydrocarbon reservoirs. It shows varied stacking density in hundreds of meters thick cycles, linked to climatic cycles. Low netto-gross fluvial stratigraphy featuring small-scale channel belts and paleosols indicates a temperate, subhumid/humid climate with seasonal rainfall. High net-to-gross fluvial stratigraphy records larger-scale channel belts interbedded with paleosols developed in a warmer, humid climate with perennial rainfall. The uppermost depositional system includes the paleosol-rich Laguna Palacios Formation at basin margins, with maximum thicknesses along syncline axes, and the red-colored, anastomosing fluvial systems of the Maastrichtian Colhué Huapi Formation that fill incised valleys. Both units are equivalent to the upper strata of Meseta Espinosa and El Trébol formations in the subsurface, showing degradational features marking the onset of surface uplift in the San Bernardo Fold Belt.
The Chubut Group (Cretaceous, Golfo San Jorge Basin) is a continental succession up to 6,000 meters thick, preserved in an endorheic basin. Its basal depositional system includes the fluvial Matasiete Formation and the lacustrine Pozo D-129 Formation, the main source rock for the hydrocarbons of the basin. The Matasiete Formation (Aptian) represents a high-accommodation, exotic fluvial system with headwaters in the present-day Cañadón Asfalto Basin (CAB), referred to as the Los Adobes Formation. Sediment was transported southward to a saline-alkaline lake (Pozo D-129 Formation) through N-S sedimentary corridors in an extensional setting. The overlying depositional system is integrated by the Castillo and Mina del Carmen formations (Albian-Cenomanian?), and it consists of reworked volcaniclastic particles in drainage catchments within a W-E elongated extensional basin, disconnected from the CAB. The subsequent depositional system includes the Bajo Barreal Formation (CenomanianConiacian?), containing the main hydrocarbon reservoirs. It shows varied stacking density in hundreds of meters thick cycles, linked to climatic cycles. Low netto-gross fluvial stratigraphy featuring small-scale channel belts and paleosols indicates a temperate, subhumid/humid climate with seasonal rainfall. High net-to-gross fluvial stratigraphy records larger-scale channel belts interbedded with paleosols developed in a warmer, humid climate with perennial rainfall. The uppermost depositional system includes the paleosol-rich Laguna Palacios Formation at basin margins, with maximum thicknesses along syncline axes, and the red-colored, anastomosing fluvial systems of the Maastrichtian Colhué Huapi Formation that fill incised valleys. Both units are equivalent to the upper strata of Meseta Espinosa and El Trébol formations in the subsurface, showing degradational features marking the onset of surface uplift in the San Bernardo Fold Belt.
description Fil: Paredes, José. Departamento de Geología, Facultad de Ciencias Naturales y Ciencias de la Salud (FCNyCS),Universidad Nacional de la Patagonia “San Juan Bosco”. Argentina.
publishDate 2025
dc.date.none.fl_str_mv 2025
info:eu-repo/date/embargoEnd/2027-01-01
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dc.identifier.none.fl_str_mv Paredes, J. M., Foix, N., Allard, J. O., Lizzoli, S., Olazábal, S. X., and Tunik, M. A. 2025. Stratigraphy of the Chubut Group (Cretaceous, Golfo San Jorge Basin, Argentina): impacts of allogenic controls on the alluvial macro-architecture. Latin American Journal of Sedimentology and Basin Analysis. 32 (1): 32-43
1851-4979
http://rid.unrn.edu.ar/handle/20.500.12049/13519
identifier_str_mv Paredes, J. M., Foix, N., Allard, J. O., Lizzoli, S., Olazábal, S. X., and Tunik, M. A. 2025. Stratigraphy of the Chubut Group (Cretaceous, Golfo San Jorge Basin, Argentina): impacts of allogenic controls on the alluvial macro-architecture. Latin American Journal of Sedimentology and Basin Analysis. 32 (1): 32-43
1851-4979
url http://rid.unrn.edu.ar/handle/20.500.12049/13519
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://lajsba.sedimentologia.org.ar/lajsba
32
Latin American Journal of Sedimentology and Basin Analysis
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dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Asociación Argentina de Sedimentología
publisher.none.fl_str_mv Asociación Argentina de Sedimentología
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instname:Universidad Nacional de Río Negro
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