Evolution of a patagonian Miocene intermontane basin and its relationship with the Andean foreland: tectono-stratigraphic evidences from the Catán Lil Basin, Argentina

Autores
Franzese, Juan Rafael; D'Elia, Leandro; Bilmes, Andrés; Bucher, Joaquín; García, Micaela Romina; López, Manuel; Muravchik, Martín; Hernández, Mariano
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Catan Lil Basin is an intermontane basin developed on the wedge top of the Miocene North Patagonian retro-arc foreland basin. This basin is formed by the growth of a west verging thick skinned fold and thrust belt. An internal anticline divides the basin into two sub-basins: Las Coloradas and Los Remolinos, with other minor isolated depocentre (La Esperanza Syncline). Due to the structural configuration the basin evolved as a compartmentalized basin, connected with an extrabasinal drainage network. Structural and sedimentological analysis of field data enable us to determine that the basin was filled in four sequences (DS-I, DS-II, DS-III and DS-IV) that recorded three major aggradational/degradational cycles characterized by alluvial-fluvial sedimentation and a final volcanic succession of olivinic basalts. The first two sequences (DS-I and DS-II) integrate a growth wedge related to tectonic uplift and limb rotation of the main anticlines. DS-III and DS-IV were deposited under post-kinematic conditions when there was no more tectonic activity in the fold and thrust belt. There is a strong difference in composition between the first sequence DS-I and the others. DS-I is composed by volcaniclastic sandstones, conglomerates and paleosols. The two other sedimentary sequences (DS-II and DS-III) are composed of purely epiclastic material. This sedimentary succession can be defined as compound valley fill occurred under general low accommodation conditions with a progressive reduction of A/S during basin evolution. The DS-IV corresponds to a volcanic plateau associated with an upper Miocene basaltic retro-arc volcanism. A new 39Ar/40Ar age for the basalts is presented in this paper that constrains the end of deposition in the Catan Lil Basin to the Upper Miocene (8.5 Ma). After this basaltic event, the foreland turned towards an erosional by-pass system in the study area.
Centro de Investigaciones Geológicas
Materia
Geología
Retro-arc foreland system
Intermontane basins
Tectono-stratigraphy
Patagonia
Andes
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/127810

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network_name_str SEDICI (UNLP)
spelling Evolution of a patagonian Miocene intermontane basin and its relationship with the Andean foreland: tectono-stratigraphic evidences from the Catán Lil Basin, ArgentinaFranzese, Juan RafaelD'Elia, LeandroBilmes, AndrésBucher, JoaquínGarcía, Micaela RominaLópez, ManuelMuravchik, MartínHernández, MarianoGeologíaRetro-arc foreland systemIntermontane basinsTectono-stratigraphyPatagoniaAndesThe Catan Lil Basin is an intermontane basin developed on the wedge top of the Miocene North Patagonian retro-arc foreland basin. This basin is formed by the growth of a west verging thick skinned fold and thrust belt. An internal anticline divides the basin into two sub-basins: Las Coloradas and Los Remolinos, with other minor isolated depocentre (La Esperanza Syncline). Due to the structural configuration the basin evolved as a compartmentalized basin, connected with an extrabasinal drainage network. Structural and sedimentological analysis of field data enable us to determine that the basin was filled in four sequences (DS-I, DS-II, DS-III and DS-IV) that recorded three major aggradational/degradational cycles characterized by alluvial-fluvial sedimentation and a final volcanic succession of olivinic basalts. The first two sequences (DS-I and DS-II) integrate a growth wedge related to tectonic uplift and limb rotation of the main anticlines. DS-III and DS-IV were deposited under post-kinematic conditions when there was no more tectonic activity in the fold and thrust belt. There is a strong difference in composition between the first sequence DS-I and the others. DS-I is composed by volcaniclastic sandstones, conglomerates and paleosols. The two other sedimentary sequences (DS-II and DS-III) are composed of purely epiclastic material. This sedimentary succession can be defined as compound valley fill occurred under general low accommodation conditions with a progressive reduction of A/S during basin evolution. The DS-IV corresponds to a volcanic plateau associated with an upper Miocene basaltic retro-arc volcanism. A new 39Ar/40Ar age for the basalts is presented in this paper that constrains the end of deposition in the Catan Lil Basin to the Upper Miocene (8.5 Ma). After this basaltic event, the foreland turned towards an erosional by-pass system in the study area.Centro de Investigaciones Geológicas2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf162-175http://sedici.unlp.edu.ar/handle/10915/127810enginfo:eu-repo/semantics/altIdentifier/issn/0895-9811info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2018.06.008info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:31:07Zoai:sedici.unlp.edu.ar:10915/127810Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:31:07.791SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Evolution of a patagonian Miocene intermontane basin and its relationship with the Andean foreland: tectono-stratigraphic evidences from the Catán Lil Basin, Argentina
title Evolution of a patagonian Miocene intermontane basin and its relationship with the Andean foreland: tectono-stratigraphic evidences from the Catán Lil Basin, Argentina
spellingShingle Evolution of a patagonian Miocene intermontane basin and its relationship with the Andean foreland: tectono-stratigraphic evidences from the Catán Lil Basin, Argentina
Franzese, Juan Rafael
Geología
Retro-arc foreland system
Intermontane basins
Tectono-stratigraphy
Patagonia
Andes
title_short Evolution of a patagonian Miocene intermontane basin and its relationship with the Andean foreland: tectono-stratigraphic evidences from the Catán Lil Basin, Argentina
title_full Evolution of a patagonian Miocene intermontane basin and its relationship with the Andean foreland: tectono-stratigraphic evidences from the Catán Lil Basin, Argentina
title_fullStr Evolution of a patagonian Miocene intermontane basin and its relationship with the Andean foreland: tectono-stratigraphic evidences from the Catán Lil Basin, Argentina
title_full_unstemmed Evolution of a patagonian Miocene intermontane basin and its relationship with the Andean foreland: tectono-stratigraphic evidences from the Catán Lil Basin, Argentina
title_sort Evolution of a patagonian Miocene intermontane basin and its relationship with the Andean foreland: tectono-stratigraphic evidences from the Catán Lil Basin, Argentina
dc.creator.none.fl_str_mv Franzese, Juan Rafael
D'Elia, Leandro
Bilmes, Andrés
Bucher, Joaquín
García, Micaela Romina
López, Manuel
Muravchik, Martín
Hernández, Mariano
author Franzese, Juan Rafael
author_facet Franzese, Juan Rafael
D'Elia, Leandro
Bilmes, Andrés
Bucher, Joaquín
García, Micaela Romina
López, Manuel
Muravchik, Martín
Hernández, Mariano
author_role author
author2 D'Elia, Leandro
Bilmes, Andrés
Bucher, Joaquín
García, Micaela Romina
López, Manuel
Muravchik, Martín
Hernández, Mariano
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Geología
Retro-arc foreland system
Intermontane basins
Tectono-stratigraphy
Patagonia
Andes
topic Geología
Retro-arc foreland system
Intermontane basins
Tectono-stratigraphy
Patagonia
Andes
dc.description.none.fl_txt_mv The Catan Lil Basin is an intermontane basin developed on the wedge top of the Miocene North Patagonian retro-arc foreland basin. This basin is formed by the growth of a west verging thick skinned fold and thrust belt. An internal anticline divides the basin into two sub-basins: Las Coloradas and Los Remolinos, with other minor isolated depocentre (La Esperanza Syncline). Due to the structural configuration the basin evolved as a compartmentalized basin, connected with an extrabasinal drainage network. Structural and sedimentological analysis of field data enable us to determine that the basin was filled in four sequences (DS-I, DS-II, DS-III and DS-IV) that recorded three major aggradational/degradational cycles characterized by alluvial-fluvial sedimentation and a final volcanic succession of olivinic basalts. The first two sequences (DS-I and DS-II) integrate a growth wedge related to tectonic uplift and limb rotation of the main anticlines. DS-III and DS-IV were deposited under post-kinematic conditions when there was no more tectonic activity in the fold and thrust belt. There is a strong difference in composition between the first sequence DS-I and the others. DS-I is composed by volcaniclastic sandstones, conglomerates and paleosols. The two other sedimentary sequences (DS-II and DS-III) are composed of purely epiclastic material. This sedimentary succession can be defined as compound valley fill occurred under general low accommodation conditions with a progressive reduction of A/S during basin evolution. The DS-IV corresponds to a volcanic plateau associated with an upper Miocene basaltic retro-arc volcanism. A new 39Ar/40Ar age for the basalts is presented in this paper that constrains the end of deposition in the Catan Lil Basin to the Upper Miocene (8.5 Ma). After this basaltic event, the foreland turned towards an erosional by-pass system in the study area.
Centro de Investigaciones Geológicas
description The Catan Lil Basin is an intermontane basin developed on the wedge top of the Miocene North Patagonian retro-arc foreland basin. This basin is formed by the growth of a west verging thick skinned fold and thrust belt. An internal anticline divides the basin into two sub-basins: Las Coloradas and Los Remolinos, with other minor isolated depocentre (La Esperanza Syncline). Due to the structural configuration the basin evolved as a compartmentalized basin, connected with an extrabasinal drainage network. Structural and sedimentological analysis of field data enable us to determine that the basin was filled in four sequences (DS-I, DS-II, DS-III and DS-IV) that recorded three major aggradational/degradational cycles characterized by alluvial-fluvial sedimentation and a final volcanic succession of olivinic basalts. The first two sequences (DS-I and DS-II) integrate a growth wedge related to tectonic uplift and limb rotation of the main anticlines. DS-III and DS-IV were deposited under post-kinematic conditions when there was no more tectonic activity in the fold and thrust belt. There is a strong difference in composition between the first sequence DS-I and the others. DS-I is composed by volcaniclastic sandstones, conglomerates and paleosols. The two other sedimentary sequences (DS-II and DS-III) are composed of purely epiclastic material. This sedimentary succession can be defined as compound valley fill occurred under general low accommodation conditions with a progressive reduction of A/S during basin evolution. The DS-IV corresponds to a volcanic plateau associated with an upper Miocene basaltic retro-arc volcanism. A new 39Ar/40Ar age for the basalts is presented in this paper that constrains the end of deposition in the Catan Lil Basin to the Upper Miocene (8.5 Ma). After this basaltic event, the foreland turned towards an erosional by-pass system in the study area.
publishDate 2018
dc.date.none.fl_str_mv 2018
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Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
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