Structure, stratigraphy and tectonic evolution of the Ñirihuau basin in the río Cushamen region, Chubut

Autores
Ramos, M.E.; Orts, D.; Calatayud, F.; Pazos, P.J.; Folguera, A.; Ramos, V.A.
Año de publicación
2011
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The southern part of the Ñirihuau basin at the valley of the Cushamen River region, is deformed and uplifted forming a prominent Precordillera Patagónica fold and thrust belt, east of the Patagonian Andes. The Ñirihuau Basin infill is represented by Oligocene to Miocene sedimentary to volcaniclastic rocks gathered in eleven litho types belonging to four members. These foreland sequences are exposed by a combination of thin-skinned deformation whose shortening is transferred to the basement in the west beneath the Cordón del Maitén. The entire Ñirihuau section as well as the overlying Collón Cura Formation is characterized by the occurrence of progressive unconformities, fact that implies synorogenic sedimentation at the time of the Cordón del Maitén range uplift. This belt is formed by an east-verging basement wedge associated with a series of backthrusts. The reactivation of the deformation associated with growth strata, indicates that the basin has evolved in a wedge-top of a foreland system in different pulses of deformation.
Fil:Ramos, M.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Orts, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Pazos, P.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Folguera, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Ramos, V.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fuente
Rev. Asoc. Geol. Argent. 2011;68(2):210-224
Materia
Ñirihuau basin
Patagonia
Progressive uncomformities
Synorogenic basins
basin evolution
deformation
fold and thrust belt
foreland basin
infill
lithotype
reactivation
sedimentation
stratigraphy
tectonic evolution
unconformity
uplift
Andes
Argentina
Chubut
Cushamen
Nirihuau Basin
Patagonia
Precordillera
Rio Negro [Argentina]
Cura
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/2.5/ar
Repositorio
Biblioteca Digital (UBA-FCEN)
Institución
Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
OAI Identificador
paperaa:paper_00044822_v68_n2_p210_Ramos
Acceder
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oai_identifier_str paperaa:paper_00044822_v68_n2_p210_Ramos
network_acronym_str BDUBAFCEN
repository_id_str 1896
network_name_str Biblioteca Digital (UBA-FCEN)
spelling Structure, stratigraphy and tectonic evolution of the Ñirihuau basin in the río Cushamen region, Chubut Ramos, M.E.Orts, D.Calatayud, F.Pazos, P.J.Folguera, A.Ramos, V.A.Ñirihuau basinPatagoniaProgressive uncomformitiesSynorogenic basinsbasin evolutiondeformationfold and thrust beltforeland basininfilllithotypereactivationsedimentationstratigraphytectonic evolutionunconformityupliftAndesArgentinaChubutCushamenNirihuau BasinPatagoniaPrecordilleraRio Negro [Argentina]CuraThe southern part of the Ñirihuau basin at the valley of the Cushamen River region, is deformed and uplifted forming a prominent Precordillera Patagónica fold and thrust belt, east of the Patagonian Andes. The Ñirihuau Basin infill is represented by Oligocene to Miocene sedimentary to volcaniclastic rocks gathered in eleven litho types belonging to four members. These foreland sequences are exposed by a combination of thin-skinned deformation whose shortening is transferred to the basement in the west beneath the Cordón del Maitén. The entire Ñirihuau section as well as the overlying Collón Cura Formation is characterized by the occurrence of progressive unconformities, fact that implies synorogenic sedimentation at the time of the Cordón del Maitén range uplift. This belt is formed by an east-verging basement wedge associated with a series of backthrusts. The reactivation of the deformation associated with growth strata, indicates that the basin has evolved in a wedge-top of a foreland system in different pulses of deformation.Fil:Ramos, M.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.Fil:Orts, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.Fil:Pazos, P.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.Fil:Folguera, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.Fil:Ramos, V.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.2011info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://hdl.handle.net/20.500.12110/paper_00044822_v68_n2_p210_RamosRev. Asoc. Geol. Argent. 2011;68(2):210-224reponame:Biblioteca Digital (UBA-FCEN)instname:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturalesinstacron:UBA-FCENenginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/2.5/ar2025-11-27T08:36:54Zpaperaa:paper_00044822_v68_n2_p210_RamosInstitucionalhttps://digital.bl.fcen.uba.ar/Universidad públicaNo correspondehttps://digital.bl.fcen.uba.ar/cgi-bin/oaiserver.cgiana@bl.fcen.uba.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:18962025-11-27 08:36:55.435Biblioteca Digital (UBA-FCEN) - Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturalesfalse
dc.title.none.fl_str_mv Structure, stratigraphy and tectonic evolution of the Ñirihuau basin in the río Cushamen region, Chubut
title Structure, stratigraphy and tectonic evolution of the Ñirihuau basin in the río Cushamen region, Chubut
spellingShingle Structure, stratigraphy and tectonic evolution of the Ñirihuau basin in the río Cushamen region, Chubut
Ramos, M.E.
Ñirihuau basin
Patagonia
Progressive uncomformities
Synorogenic basins
basin evolution
deformation
fold and thrust belt
foreland basin
infill
lithotype
reactivation
sedimentation
stratigraphy
tectonic evolution
unconformity
uplift
Andes
Argentina
Chubut
Cushamen
Nirihuau Basin
Patagonia
Precordillera
Rio Negro [Argentina]
Cura
title_short Structure, stratigraphy and tectonic evolution of the Ñirihuau basin in the río Cushamen region, Chubut
title_full Structure, stratigraphy and tectonic evolution of the Ñirihuau basin in the río Cushamen region, Chubut
title_fullStr Structure, stratigraphy and tectonic evolution of the Ñirihuau basin in the río Cushamen region, Chubut
title_full_unstemmed Structure, stratigraphy and tectonic evolution of the Ñirihuau basin in the río Cushamen region, Chubut
title_sort Structure, stratigraphy and tectonic evolution of the Ñirihuau basin in the río Cushamen region, Chubut
dc.creator.none.fl_str_mv Ramos, M.E.
Orts, D.
Calatayud, F.
Pazos, P.J.
Folguera, A.
Ramos, V.A.
author Ramos, M.E.
author_facet Ramos, M.E.
Orts, D.
Calatayud, F.
Pazos, P.J.
Folguera, A.
Ramos, V.A.
author_role author
author2 Orts, D.
Calatayud, F.
Pazos, P.J.
Folguera, A.
Ramos, V.A.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Ñirihuau basin
Patagonia
Progressive uncomformities
Synorogenic basins
basin evolution
deformation
fold and thrust belt
foreland basin
infill
lithotype
reactivation
sedimentation
stratigraphy
tectonic evolution
unconformity
uplift
Andes
Argentina
Chubut
Cushamen
Nirihuau Basin
Patagonia
Precordillera
Rio Negro [Argentina]
Cura
topic Ñirihuau basin
Patagonia
Progressive uncomformities
Synorogenic basins
basin evolution
deformation
fold and thrust belt
foreland basin
infill
lithotype
reactivation
sedimentation
stratigraphy
tectonic evolution
unconformity
uplift
Andes
Argentina
Chubut
Cushamen
Nirihuau Basin
Patagonia
Precordillera
Rio Negro [Argentina]
Cura
dc.description.none.fl_txt_mv The southern part of the Ñirihuau basin at the valley of the Cushamen River region, is deformed and uplifted forming a prominent Precordillera Patagónica fold and thrust belt, east of the Patagonian Andes. The Ñirihuau Basin infill is represented by Oligocene to Miocene sedimentary to volcaniclastic rocks gathered in eleven litho types belonging to four members. These foreland sequences are exposed by a combination of thin-skinned deformation whose shortening is transferred to the basement in the west beneath the Cordón del Maitén. The entire Ñirihuau section as well as the overlying Collón Cura Formation is characterized by the occurrence of progressive unconformities, fact that implies synorogenic sedimentation at the time of the Cordón del Maitén range uplift. This belt is formed by an east-verging basement wedge associated with a series of backthrusts. The reactivation of the deformation associated with growth strata, indicates that the basin has evolved in a wedge-top of a foreland system in different pulses of deformation.
Fil:Ramos, M.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Orts, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Pazos, P.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Folguera, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Ramos, V.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
description The southern part of the Ñirihuau basin at the valley of the Cushamen River region, is deformed and uplifted forming a prominent Precordillera Patagónica fold and thrust belt, east of the Patagonian Andes. The Ñirihuau Basin infill is represented by Oligocene to Miocene sedimentary to volcaniclastic rocks gathered in eleven litho types belonging to four members. These foreland sequences are exposed by a combination of thin-skinned deformation whose shortening is transferred to the basement in the west beneath the Cordón del Maitén. The entire Ñirihuau section as well as the overlying Collón Cura Formation is characterized by the occurrence of progressive unconformities, fact that implies synorogenic sedimentation at the time of the Cordón del Maitén range uplift. This belt is formed by an east-verging basement wedge associated with a series of backthrusts. The reactivation of the deformation associated with growth strata, indicates that the basin has evolved in a wedge-top of a foreland system in different pulses of deformation.
publishDate 2011
dc.date.none.fl_str_mv 2011
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/20.500.12110/paper_00044822_v68_n2_p210_Ramos
url http://hdl.handle.net/20.500.12110/paper_00044822_v68_n2_p210_Ramos
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/2.5/ar
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/2.5/ar
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv Rev. Asoc. Geol. Argent. 2011;68(2):210-224
reponame:Biblioteca Digital (UBA-FCEN)
instname:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
instacron:UBA-FCEN
reponame_str Biblioteca Digital (UBA-FCEN)
collection Biblioteca Digital (UBA-FCEN)
instname_str Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
instacron_str UBA-FCEN
institution UBA-FCEN
repository.name.fl_str_mv Biblioteca Digital (UBA-FCEN) - Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
repository.mail.fl_str_mv ana@bl.fcen.uba.ar
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score 13.011256

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