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
- Institución
- Universidad Nacional de Río Negro
- OAI Identificador
- oai:rid.unrn.edu.ar:20.500.12049/13519
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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 |
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 |
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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info:eu-repo/semantics/embargoedAccess https://creativecommons.org/licenses/by-nc-sa/4.0/ |
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embargoedAccess |
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https://creativecommons.org/licenses/by-nc-sa/4.0/ |
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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reponame:RID-UNRN (UNRN) instname:Universidad Nacional de Río Negro |
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Universidad Nacional de Río Negro |
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RID-UNRN (UNRN) - Universidad Nacional de Río Negro |
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rid@unrn.edu.ar |
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1844621622006251520 |
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13.070432 |