Late Cretaceous uplift in the Malargüe fold-and-thrust belt (35oS), southern Central Andes of Argentina and Chile

The Cordillera de los Andes is the typical example of a subduction-related orogen. Its present topography is the result of post-Miocene uplift, however, Andean compressional deformation and uplift started in the Late Cretaceous, as increasingly recognized in different sectors of the mountain belt. W...

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Detalhes bibliográficos
Autores: Mescua, J.F., Giambiagi, L.B., Ramos, V.A.
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2013
País:Argentina
Recursos:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
Repositorio:Biblioteca Digital (UBA-FCEN)
Idioma:inglés
OAI Identifier:paperaa:paper_07187092_v40_n1_p102_Mescua
Acesso em linha:http://hdl.handle.net/20.500.12110/paper_07187092_v40_n1_p102_Mescua
Access Level:acceso abierto
Palavra-chave:Andes
Cretaceous
Foreland basin
Orogeny
deformation
fold and thrust belt
foreland basin
Miocene
normal fault
orogeny
provenance
subduction
topography
uplift
Argentina
Chile
Neuquen Basin
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oai_identifier_str paperaa:paper_07187092_v40_n1_p102_Mescua
network_acronym_str AR
network_name_str Argentina
repository_id_str
spelling Late Cretaceous uplift in the Malargüe fold-and-thrust belt (35oS), southern Central Andes of Argentina and Chile Mescua, J.F.Giambiagi, L.B.Ramos, V.A.AndesCretaceousForeland basinOrogenyCretaceousdeformationfold and thrust beltforeland basinMiocenenormal faultorogenyprovenancesubductiontopographyupliftAndesArgentinaChileNeuquen BasinThe Cordillera de los Andes is the typical example of a subduction-related orogen. Its present topography is the result of post-Miocene uplift, however, Andean compressional deformation and uplift started in the Late Cretaceous, as increasingly recognized in different sectors of the mountain belt. We present evidences of a Late Cretaceous event of compressional deformation in the southern Central Andes (35oS), reflected in syn-orogenic foreland basin deposits assigned to the Neuquén Group in Argentina and the Brownish-Red Clastic Unit in Chile. Comparison of the facies of these units allows us to recognize a sector proximal to the Late Cretaceous orogenic front, a distal sector with sediment provenance from the forebulge and a western sector where the sediments where deposited within the Late Cretaceous mountain belt. On this basis, we assign the orogenic front to an inverted Jurassic normal fault, the Río del Cobre fault, and reconstruct the structure of the easternmost Late Cretaceous Andes at this latitude. The change in the location of the orogenic front north and south of 35oS allows us to recognize a long-lived change in behavior in Andean evolution in this sector, which correlates with a change in the shape and the deposits of Mesozoic Neuquén basin.Fil:Mescua, J.F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.Fil:Giambiagi, L.B. 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.2013info: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_07187092_v40_n1_p102_MescuaAndean Geol. 2013;40(1):102-116reponame: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/ar2024-05-10T10:42:47Zpaperaa:paper_07187092_v40_n1_p102_MescuaInstitucionalhttps://digital.bl.fcen.uba.ar/Universidad públicaNo correspondehttps://digital.bl.fcen.uba.ar/cgi-bin/oaiserver.cgiana@bl.fcen.uba.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:18962024-05-10 10:42:48.191Biblioteca Digital (UBA-FCEN) - Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturalesfalse
dc.title.none.fl_str_mv Late Cretaceous uplift in the Malargüe fold-and-thrust belt (35oS), southern Central Andes of Argentina and Chile
title Late Cretaceous uplift in the Malargüe fold-and-thrust belt (35oS), southern Central Andes of Argentina and Chile
spellingShingle Late Cretaceous uplift in the Malargüe fold-and-thrust belt (35oS), southern Central Andes of Argentina and Chile
Mescua, J.F.
Andes
Cretaceous
Foreland basin
Orogeny
Cretaceous
deformation
fold and thrust belt
foreland basin
Miocene
normal fault
orogeny
provenance
subduction
topography
uplift
Andes
Argentina
Chile
Neuquen Basin
title_short Late Cretaceous uplift in the Malargüe fold-and-thrust belt (35oS), southern Central Andes of Argentina and Chile
title_full Late Cretaceous uplift in the Malargüe fold-and-thrust belt (35oS), southern Central Andes of Argentina and Chile
title_fullStr Late Cretaceous uplift in the Malargüe fold-and-thrust belt (35oS), southern Central Andes of Argentina and Chile
title_full_unstemmed Late Cretaceous uplift in the Malargüe fold-and-thrust belt (35oS), southern Central Andes of Argentina and Chile
title_sort Late Cretaceous uplift in the Malargüe fold-and-thrust belt (35oS), southern Central Andes of Argentina and Chile
dc.creator.none.fl_str_mv Mescua, J.F.
Giambiagi, L.B.
Ramos, V.A.
author Mescua, J.F.
author_facet Mescua, J.F.
Giambiagi, L.B.
Ramos, V.A.
author_role author
author2 Giambiagi, L.B.
Ramos, V.A.
author2_role author
author
dc.subject.none.fl_str_mv Andes
Cretaceous
Foreland basin
Orogeny
Cretaceous
deformation
fold and thrust belt
foreland basin
Miocene
normal fault
orogeny
provenance
subduction
topography
uplift
Andes
Argentina
Chile
Neuquen Basin
topic Andes
Cretaceous
Foreland basin
Orogeny
Cretaceous
deformation
fold and thrust belt
foreland basin
Miocene
normal fault
orogeny
provenance
subduction
topography
uplift
Andes
Argentina
Chile
Neuquen Basin
description The Cordillera de los Andes is the typical example of a subduction-related orogen. Its present topography is the result of post-Miocene uplift, however, Andean compressional deformation and uplift started in the Late Cretaceous, as increasingly recognized in different sectors of the mountain belt. We present evidences of a Late Cretaceous event of compressional deformation in the southern Central Andes (35oS), reflected in syn-orogenic foreland basin deposits assigned to the Neuquén Group in Argentina and the Brownish-Red Clastic Unit in Chile. Comparison of the facies of these units allows us to recognize a sector proximal to the Late Cretaceous orogenic front, a distal sector with sediment provenance from the forebulge and a western sector where the sediments where deposited within the Late Cretaceous mountain belt. On this basis, we assign the orogenic front to an inverted Jurassic normal fault, the Río del Cobre fault, and reconstruct the structure of the easternmost Late Cretaceous Andes at this latitude. The change in the location of the orogenic front north and south of 35oS allows us to recognize a long-lived change in behavior in Andean evolution in this sector, which correlates with a change in the shape and the deposits of Mesozoic Neuquén basin.
publishDate 2013
dc.date.none.fl_str_mv 2013
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_07187092_v40_n1_p102_Mescua
url http://hdl.handle.net/20.500.12110/paper_07187092_v40_n1_p102_Mescua
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 Andean Geol. 2013;40(1):102-116
reponame:Biblioteca Digital (UBA-FCEN)
instname:Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
instacron:UBA-FCEN
instname_str Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturales
instacron_str UBA-FCEN
institution UBA-FCEN
reponame_str Biblioteca Digital (UBA-FCEN)
collection Biblioteca Digital (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 15,812455

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