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

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.

Guardado en:
Detalles Bibliográficos
Autores principales: Paredes, José, Foix, Nicolás, Allard, José, Lizzoli, Sabrina, Olazábal, Sabrina, Tunik, Maisa
Lenguaje:Inglés
Publicado: Asociación Argentina de Sedimentología info
Materias:
Ciencias Exactas y Naturales
Endorheic basin
Cretaceous fluvial systems
Alluvial architecture
Allogenic controls
Patagonia
Acceso en línea:http://rid.unrn.edu.ar/handle/20.500.12049/13519
Aporte de:
Repositorio Institucional Digital de la Universidad Nacional de Río Negro (UNRN) de Universidad Nacional de Río Negro
id I65-R171-20.500.12049-13519
record_format dspace
institution Universidad Nacional de Río Negro
institution_str I-65
repository_str R-171
collection Repositorio Institucional Digital de la Universidad Nacional de Río Negro (UNRN)
language Inglés
orig_language_str_mv en
topic Ciencias Exactas y Naturales
Endorheic basin
Cretaceous fluvial systems
Alluvial architecture
Allogenic controls
Patagonia
Ciencias Exactas y Naturales
spellingShingle Ciencias Exactas y Naturales
Endorheic basin
Cretaceous fluvial systems
Alluvial architecture
Allogenic controls
Patagonia
Ciencias Exactas y Naturales
Paredes, José
Foix, Nicolás
Allard, José
Lizzoli, Sabrina
Olazábal, Sabrina
Tunik, Maisa
Stratigraphy of the chubut group (Cretaceous, Golfo San Jorge Basin, Argentina): impacts of allogenic controls on the alluvial macro-architecture
topic_facet Ciencias Exactas y Naturales
Endorheic basin
Cretaceous fluvial systems
Alluvial architecture
Allogenic controls
Patagonia
Ciencias Exactas y Naturales
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.
author Paredes, José
Foix, Nicolás
Allard, José
Lizzoli, Sabrina
Olazábal, Sabrina
Tunik, Maisa
author_facet Paredes, José
Foix, Nicolás
Allard, José
Lizzoli, Sabrina
Olazábal, Sabrina
Tunik, Maisa
author_sort Paredes, José
title Stratigraphy of the chubut group (Cretaceous, Golfo San Jorge Basin, Argentina): impacts of allogenic controls on the alluvial macro-architecture
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
publisher Asociación Argentina de Sedimentología
publishDate info
url http://rid.unrn.edu.ar/handle/20.500.12049/13519
work_keys_str_mv AT paredesjose stratigraphyofthechubutgroupcretaceousgolfosanjorgebasinargentinaimpactsofallogeniccontrolsonthealluvialmacroarchitecture
AT foixnicolas stratigraphyofthechubutgroupcretaceousgolfosanjorgebasinargentinaimpactsofallogeniccontrolsonthealluvialmacroarchitecture
AT allardjose stratigraphyofthechubutgroupcretaceousgolfosanjorgebasinargentinaimpactsofallogeniccontrolsonthealluvialmacroarchitecture
AT lizzolisabrina stratigraphyofthechubutgroupcretaceousgolfosanjorgebasinargentinaimpactsofallogeniccontrolsonthealluvialmacroarchitecture
AT olazabalsabrina stratigraphyofthechubutgroupcretaceousgolfosanjorgebasinargentinaimpactsofallogeniccontrolsonthealluvialmacroarchitecture
AT tunikmaisa stratigraphyofthechubutgroupcretaceousgolfosanjorgebasinargentinaimpactsofallogeniccontrolsonthealluvialmacroarchitecture
_version_ 1845388537589923840
spelling I65-R171-20.500.12049-135192025-09-29T14:15:42Z application/pdf info:eu-repo/date/embargoEnd/2027-01-01 info:eu-repo/semantics/embargoedAccess https://creativecommons.org/licenses/by-nc-sa/4.0/ 2025 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. Stratigraphy of the chubut group (Cretaceous, Golfo San Jorge Basin, Argentina): impacts of allogenic controls on the alluvial macro-architecture Paredes, José Foix, Nicolás Allard, José Lizzoli, Sabrina Olazábal, Sabrina Tunik, Maisa Ciencias Exactas y Naturales Endorheic basin Cretaceous fluvial systems Alluvial architecture Allogenic controls Patagonia Ciencias Exactas y Naturales 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. true 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. 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 en https://lajsba.sedimentologia.org.ar/lajsba 32 Latin American Journal of Sedimentology and Basin Analysis Asociación Argentina de Sedimentología

Ejemplares similares