The poly-orogenic Paleozoic rocks of Cuesta del Rahue area (Precordillera Neuquina, Argentina) and their significance in marking the southern end of the Chanic orogenic belt

[EN] In the Cuesta del Rahue area, located in the Precordillera Neuquina (northern Argentine Patagonia), late Paleozoic turbiditic rocks with maximum depositional age of ca. 389 Ma were affected by three orogenic events. The oldest orogenic event is the Chanic orogeny (Late Devonian–early Carbonifer...

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Autores: Heredia, Nemesio, Pedreira, D., Giacosa, Raúl Eduardo, Serra Varela, S., Foix, Nicolás, Allard, José, González, Pablo Diego, Martín González, Fidel
Tipo de documento: artigo
Estado:Versão publicada
Data de publicação:2023
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositório:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/351996
Acesso em linha:http://hdl.handle.net/10261/351996
https://api.elsevier.com/content/abstract/scopus_id/85148849923
Access Level:Acceso aberto
Palavra-chave:Structure
Andean basement
Chanic orogen
Gondwanan orogen
Magmatism
Paleozoic
Precordillera Neuquina
Stratigraphy
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dc.title.none.fl_str_mv The poly-orogenic Paleozoic rocks of Cuesta del Rahue area (Precordillera Neuquina, Argentina) and their significance in marking the southern end of the Chanic orogenic belt
title The poly-orogenic Paleozoic rocks of Cuesta del Rahue area (Precordillera Neuquina, Argentina) and their significance in marking the southern end of the Chanic orogenic belt
spellingShingle The poly-orogenic Paleozoic rocks of Cuesta del Rahue area (Precordillera Neuquina, Argentina) and their significance in marking the southern end of the Chanic orogenic belt
Heredia, Nemesio
Structure
Andean basement
Chanic orogen
Gondwanan orogen
Magmatism
Paleozoic
Precordillera Neuquina
Stratigraphy
title_short The poly-orogenic Paleozoic rocks of Cuesta del Rahue area (Precordillera Neuquina, Argentina) and their significance in marking the southern end of the Chanic orogenic belt
title_full The poly-orogenic Paleozoic rocks of Cuesta del Rahue area (Precordillera Neuquina, Argentina) and their significance in marking the southern end of the Chanic orogenic belt
title_fullStr The poly-orogenic Paleozoic rocks of Cuesta del Rahue area (Precordillera Neuquina, Argentina) and their significance in marking the southern end of the Chanic orogenic belt
title_full_unstemmed The poly-orogenic Paleozoic rocks of Cuesta del Rahue area (Precordillera Neuquina, Argentina) and their significance in marking the southern end of the Chanic orogenic belt
title_sort The poly-orogenic Paleozoic rocks of Cuesta del Rahue area (Precordillera Neuquina, Argentina) and their significance in marking the southern end of the Chanic orogenic belt
dc.creator.none.fl_str_mv Heredia, Nemesio
Pedreira, D.
Giacosa, Raúl Eduardo
Serra Varela, S.
Foix, Nicolás
Allard, José
González, Pablo Diego
Martín González, Fidel
author Heredia, Nemesio
author_facet Heredia, Nemesio
Pedreira, D.
Giacosa, Raúl Eduardo
Serra Varela, S.
Foix, Nicolás
Allard, José
González, Pablo Diego
Martín González, Fidel
author_role author
author2 Pedreira, D.
Giacosa, Raúl Eduardo
Serra Varela, S.
Foix, Nicolás
Allard, José
González, Pablo Diego
Martín González, Fidel
author2_role author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Agencia Estatal de Investigación (España)
European Commission
Consejo Nacional de Investigaciones Científicas y Técnicas (Argentina)
Principado de Asturias
Heredia, Nemesio [0000-0001-5382-9312]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Structure
Andean basement
Chanic orogen
Gondwanan orogen
Magmatism
Paleozoic
Precordillera Neuquina
Stratigraphy
topic Structure
Andean basement
Chanic orogen
Gondwanan orogen
Magmatism
Paleozoic
Precordillera Neuquina
Stratigraphy
description [EN] In the Cuesta del Rahue area, located in the Precordillera Neuquina (northern Argentine Patagonia), late Paleozoic turbiditic rocks with maximum depositional age of ca. 389 Ma were affected by three orogenic events. The oldest orogenic event is the Chanic orogeny (Late Devonian–early Carboniferous) that is characterized by folds with NNE vergence. This deformation is developed in low-grade to very low-grade metamorphic conditions, which allowed the development of a slaty/rough cleavage. The main Chanic structure is an asymmetric fold with a large normal limb tilted by the more recent orogenic events. The characteristics of the deformation and metamorphism allows us to assign the Cuesta del Rahue outcrop to the external hinterland of the western wedge of the Chanic orogen. Early to late Carboniferous igneous rocks intruded the Paleozoic rocks of the Cuesta del Rahue area and crosscut the Chanic structures. After the Chanic orogeny, the Gondwanan orogeny (late Carboniferous–early Permian) took place. The main structures of the Gondwanan orogen are thrust and related folds with SSW vergence that fold the large Chanic normal limb and also affect Carboniferous igneous rocks. The Gondwanan deformation was developed under non-metamorphic conditions, and Permian igneous rocks crosscut the Gondwanan structures. Mesozoic regional extension related to the beginning of the Andean cycle and the formation of the Neuquén Basin gave rise to normal faults and small-scale extensional folds. Finally, the Andean orogeny, developed during the Cenozoic in the study area, also affected the Cuesta del Rahue Paleozoic rocks, with the development of compressional structures related to the Aluminé thrust and fold belt. The main Andean structure in the study area is the NW–SE Rahue fault, which links the E–W Piedra Santa tear fault with the NNE–SSW Cantan Lil reverse fault. The Rahue fault has a SW tectonic transport direction. It uplifted the Cuesta del Rahue area and placed Paleozoic rocks on top of Mesozoic and Cenozoic rocks. The Piedra Santa fault partially reactivated the Huincul right-lateral and left-lateral Chanic transverse faults that define the southern end of the doubly vergent Chanic orogen, giving rise to the current Huincul lineament.
publishDate 2023
dc.date.none.fl_str_mv 2023
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/351996
https://api.elsevier.com/content/abstract/scopus_id/85148849923
url http://hdl.handle.net/10261/351996
https://api.elsevier.com/content/abstract/scopus_id/85148849923
dc.language.none.fl_str_mv Inglés
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info:eu-repo/grantAgreement/MINECO//CGL2012-38396-C03-02
https://doi.org/10.1016/j.jsames.2023.104255
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dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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spelling The poly-orogenic Paleozoic rocks of Cuesta del Rahue area (Precordillera Neuquina, Argentina) and their significance in marking the southern end of the Chanic orogenic beltHeredia, NemesioPedreira, D.Giacosa, Raúl EduardoSerra Varela, S.Foix, NicolásAllard, JoséGonzález, Pablo DiegoMartín González, FidelStructureAndean basementChanic orogenGondwanan orogenMagmatismPaleozoicPrecordillera NeuquinaStratigraphy[EN] In the Cuesta del Rahue area, located in the Precordillera Neuquina (northern Argentine Patagonia), late Paleozoic turbiditic rocks with maximum depositional age of ca. 389 Ma were affected by three orogenic events. The oldest orogenic event is the Chanic orogeny (Late Devonian–early Carboniferous) that is characterized by folds with NNE vergence. This deformation is developed in low-grade to very low-grade metamorphic conditions, which allowed the development of a slaty/rough cleavage. The main Chanic structure is an asymmetric fold with a large normal limb tilted by the more recent orogenic events. The characteristics of the deformation and metamorphism allows us to assign the Cuesta del Rahue outcrop to the external hinterland of the western wedge of the Chanic orogen. Early to late Carboniferous igneous rocks intruded the Paleozoic rocks of the Cuesta del Rahue area and crosscut the Chanic structures. After the Chanic orogeny, the Gondwanan orogeny (late Carboniferous–early Permian) took place. The main structures of the Gondwanan orogen are thrust and related folds with SSW vergence that fold the large Chanic normal limb and also affect Carboniferous igneous rocks. The Gondwanan deformation was developed under non-metamorphic conditions, and Permian igneous rocks crosscut the Gondwanan structures. Mesozoic regional extension related to the beginning of the Andean cycle and the formation of the Neuquén Basin gave rise to normal faults and small-scale extensional folds. Finally, the Andean orogeny, developed during the Cenozoic in the study area, also affected the Cuesta del Rahue Paleozoic rocks, with the development of compressional structures related to the Aluminé thrust and fold belt. The main Andean structure in the study area is the NW–SE Rahue fault, which links the E–W Piedra Santa tear fault with the NNE–SSW Cantan Lil reverse fault. The Rahue fault has a SW tectonic transport direction. It uplifted the Cuesta del Rahue area and placed Paleozoic rocks on top of Mesozoic and Cenozoic rocks. The Piedra Santa fault partially reactivated the Huincul right-lateral and left-lateral Chanic transverse faults that define the southern end of the doubly vergent Chanic orogen, giving rise to the current Huincul lineament.This work has been supported by the projects TORANDES (CGL2012-38396-C03) of the Spanish I + D + i Plan with FEDER Funds of the European Union and PIP-CONICET 112-201101-00324 of Argentina. This is a contribution of the GEOTEC Group, with additional funding from the European Regional Development Funds and the Government of the Principality of Asturias (IDI/2018/000216 and AYUD/2021/51923). The authors thank the technical and human support provided by SGIker of UPV/EHU and European funding (ERDF and ESF).Peer reviewedElsevierAgencia Estatal de Investigación (España)European CommissionConsejo Nacional de Investigaciones Científicas y Técnicas (Argentina)Principado de AsturiasHeredia, Nemesio [0000-0001-5382-9312]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202420242023info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/351996https://api.elsevier.com/content/abstract/scopus_id/85148849923reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO//CGL2012-38396-C03-01info:eu-repo/grantAgreement/MINECO//CGL2012-38396-C03-03info:eu-repo/grantAgreement/MINECO//CGL2012-38396-C03-02https://doi.org/10.1016/j.jsames.2023.104255Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3519962026-05-22T06:33:51Z
score 15,812455

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