Structural style of the Malargüe fold-and-thrust belt at the Diamante River area (34°30'-34°50'S) and its linkage with the Cordillera Frontal, Andes of central Argentina

The Malargüe fold-and-thrust belt is a thick-skinned belt developed in Miocene-Pliocene times during the Andean orogeny, which together with the Cordillera Frontal constitutes the Andes of central Argentina in the Diamante River area. Detailed field mapping and construction of three regional balance...

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Detalhes bibliográficos
Autor: Turienzo, Martin Miguel
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2010
País:Argentina
Recursos:Consejo Nacional de Investigaciones Científicas y Técnicas
Repositorio:CONICET Digital (CONICET)
Idioma:inglés
OAI Identifier:oai:ri.conicet.gov.ar:11336/72046
Acesso em linha:http://hdl.handle.net/11336/72046
Access Level:acceso abierto
Palavra-chave:Andes
Balanced Cross-Sections
Basement Wedges
Malargue Fold-And-Thrust Belt
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
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spelling Structural style of the Malargüe fold-and-thrust belt at the Diamante River area (34°30'-34°50'S) and its linkage with the Cordillera Frontal, Andes of central ArgentinaTurienzo, Martin MiguelAndesBalanced Cross-SectionsBasement WedgesMalargue Fold-And-Thrust Belthttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Malargüe fold-and-thrust belt is a thick-skinned belt developed in Miocene-Pliocene times during the Andean orogeny, which together with the Cordillera Frontal constitutes the Andes of central Argentina in the Diamante River area. Detailed field mapping and construction of three regional balanced cross-sections, supported by seismic and well information, constrains the structural style of this Andean region as two basement uplifts in the western and eastern sectors surrounding a central region of thin-skinned deformation. In the west, large basement wedges related to thrust faults developed during Andean compression propagated along favourable horizons (commonly gypsum) into the sedimentary cover. These wedges transferred shortening to the cover rocks producing the thin-skinned structures. There is therefore a close spatial and temporal relationship between basement and cover deformation. In the thin-skinned region, the abundance of shales and salt horizons in the west facilitated the formation of fault-related folds while the more competent units in the east were deformed into duplex and imbricated thrusts. The basement uplift in the eastern sector represents the southern end of the Cordillera Frontal, where the Carrizalito fault placed pre-Jurassic rocks over tertiary synorogenic sediments in the northern area while in the southern region it remained as a blind thrust. A common feature is the development of backthrust systems related to the major east-vergent basement structures. The backthrusts therefore serve to locate basement uplifts where outcrops are absent. Three-dimensional integration of the cross-sections and a structural map at the top of the pre-Jurassic basement show that although the main structures change considerably along strike, the total shortening of each section shows little variation. © 2009 Elsevier Ltd.Fil: Turienzo, Martin Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto Geológico del Sur. Universidad Nacional del Sur. Departamento de Geología. Instituto Geológico del Sur; ArgentinaPergamon-Elsevier Science Ltd2010-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/72046Turienzo, Martin Miguel; Structural style of the Malargüe fold-and-thrust belt at the Diamante River area (34°30'-34°50'S) and its linkage with the Cordillera Frontal, Andes of central Argentina; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 29; 3; 4-2010; 537-5560895-9811CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2009.12.002info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0895981109001783?via%3Dihubinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T13:42:15Zoai:ri.conicet.gov.ar:11336/72046instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982024-05-08 13:42:15.809CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Structural style of the Malargüe fold-and-thrust belt at the Diamante River area (34°30'-34°50'S) and its linkage with the Cordillera Frontal, Andes of central Argentina
title Structural style of the Malargüe fold-and-thrust belt at the Diamante River area (34°30'-34°50'S) and its linkage with the Cordillera Frontal, Andes of central Argentina
spellingShingle Structural style of the Malargüe fold-and-thrust belt at the Diamante River area (34°30'-34°50'S) and its linkage with the Cordillera Frontal, Andes of central Argentina
Turienzo, Martin Miguel
Andes
Balanced Cross-Sections
Basement Wedges
Malargue Fold-And-Thrust Belt
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
title_short Structural style of the Malargüe fold-and-thrust belt at the Diamante River area (34°30'-34°50'S) and its linkage with the Cordillera Frontal, Andes of central Argentina
title_full Structural style of the Malargüe fold-and-thrust belt at the Diamante River area (34°30'-34°50'S) and its linkage with the Cordillera Frontal, Andes of central Argentina
title_fullStr Structural style of the Malargüe fold-and-thrust belt at the Diamante River area (34°30'-34°50'S) and its linkage with the Cordillera Frontal, Andes of central Argentina
title_full_unstemmed Structural style of the Malargüe fold-and-thrust belt at the Diamante River area (34°30'-34°50'S) and its linkage with the Cordillera Frontal, Andes of central Argentina
title_sort Structural style of the Malargüe fold-and-thrust belt at the Diamante River area (34°30'-34°50'S) and its linkage with the Cordillera Frontal, Andes of central Argentina
dc.creator.none.fl_str_mv Turienzo, Martin Miguel
author Turienzo, Martin Miguel
author_facet Turienzo, Martin Miguel
author_role author
dc.subject.none.fl_str_mv Andes
Balanced Cross-Sections
Basement Wedges
Malargue Fold-And-Thrust Belt
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
topic Andes
Balanced Cross-Sections
Basement Wedges
Malargue Fold-And-Thrust Belt
https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
description The Malargüe fold-and-thrust belt is a thick-skinned belt developed in Miocene-Pliocene times during the Andean orogeny, which together with the Cordillera Frontal constitutes the Andes of central Argentina in the Diamante River area. Detailed field mapping and construction of three regional balanced cross-sections, supported by seismic and well information, constrains the structural style of this Andean region as two basement uplifts in the western and eastern sectors surrounding a central region of thin-skinned deformation. In the west, large basement wedges related to thrust faults developed during Andean compression propagated along favourable horizons (commonly gypsum) into the sedimentary cover. These wedges transferred shortening to the cover rocks producing the thin-skinned structures. There is therefore a close spatial and temporal relationship between basement and cover deformation. In the thin-skinned region, the abundance of shales and salt horizons in the west facilitated the formation of fault-related folds while the more competent units in the east were deformed into duplex and imbricated thrusts. The basement uplift in the eastern sector represents the southern end of the Cordillera Frontal, where the Carrizalito fault placed pre-Jurassic rocks over tertiary synorogenic sediments in the northern area while in the southern region it remained as a blind thrust. A common feature is the development of backthrust systems related to the major east-vergent basement structures. The backthrusts therefore serve to locate basement uplifts where outcrops are absent. Three-dimensional integration of the cross-sections and a structural map at the top of the pre-Jurassic basement show that although the main structures change considerably along strike, the total shortening of each section shows little variation. © 2009 Elsevier Ltd.
publishDate 2010
dc.date.none.fl_str_mv 2010-04
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/11336/72046
Turienzo, Martin Miguel; Structural style of the Malargüe fold-and-thrust belt at the Diamante River area (34°30'-34°50'S) and its linkage with the Cordillera Frontal, Andes of central Argentina; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 29; 3; 4-2010; 537-556
0895-9811
CONICET Digital
CONICET
url http://hdl.handle.net/11336/72046
identifier_str_mv Turienzo, Martin Miguel; Structural style of the Malargüe fold-and-thrust belt at the Diamante River area (34°30'-34°50'S) and its linkage with the Cordillera Frontal, Andes of central Argentina; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 29; 3; 4-2010; 537-556
0895-9811
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2009.12.002
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0895981109001783?via%3Dihub
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 15,223283

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