Tectonic evolution of the Andes of Neuquén: Constraints derived from the magmatic arc and foreland deformation

Autores
Ramos, Victor Alberto; Folguera Telichevsky, Andres
Año de publicación
2005
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The Andes of Neuquén (36°- 38°SL) have distinctive characteristics within the Central Andes inherited from the alternation of periods of generalized extension and subsequent compression. The Loncopué trough, as a result of these processes, is an unique long depression at the foothills parallel to the Principal Cordillera, and consists of a complex half-graben system produced during Oligocene times and extensionally reactivated in the Pliocene – Pleistocene. Its northern sector concentrates the present contractional orogenic front. The nature and volume of the arc-related igneous rocks, location of the volcanic fronts, expansions and retreats of the magmatism, and the associated igneous activity in the foreland, together with the analyses of the superimposed structural styles, permitted to constrain the alternating tectonic regimes. On these bases, different stages from Jurassic to Present are correlated with changes in the geometry of the Benioff zone through time. Period of steepening of the subduction zone are associated with large volumes of poorly evolved magmas and generalized extension. On the other hand, shallowing of the subduction zones are linked to foreland migration of more evolved magmas associated with contraction and uplift in the Principal Cordillera. The injection of hot asthenospheric material from the subcontinental mantle into the asthenospheric wedge during steepening of the subduction zone, produced large melting and poorly evolved magmas in an extensional setting. These periods are linked to oceanic plate reorganizations in the late Oligocene and in the early Pliocene.
Fil: Ramos, Victor Alberto. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología. Laboratorio de Tectónica Andina; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Folguera Telichevsky, Andres. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología. Laboratorio de Tectónica Andina; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Materia
tectonica
neuquen
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/93822
Acceder
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spelling Tectonic evolution of the Andes of Neuquén: Constraints derived from the magmatic arc and foreland deformationRamos, Victor AlbertoFolguera Telichevsky, Andrestectonicaneuquenhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1The Andes of Neuquén (36°- 38°SL) have distinctive characteristics within the Central Andes inherited from the alternation of periods of generalized extension and subsequent compression. The Loncopué trough, as a result of these processes, is an unique long depression at the foothills parallel to the Principal Cordillera, and consists of a complex half-graben system produced during Oligocene times and extensionally reactivated in the Pliocene – Pleistocene. Its northern sector concentrates the present contractional orogenic front. The nature and volume of the arc-related igneous rocks, location of the volcanic fronts, expansions and retreats of the magmatism, and the associated igneous activity in the foreland, together with the analyses of the superimposed structural styles, permitted to constrain the alternating tectonic regimes. On these bases, different stages from Jurassic to Present are correlated with changes in the geometry of the Benioff zone through time. Period of steepening of the subduction zone are associated with large volumes of poorly evolved magmas and generalized extension. On the other hand, shallowing of the subduction zones are linked to foreland migration of more evolved magmas associated with contraction and uplift in the Principal Cordillera. The injection of hot asthenospheric material from the subcontinental mantle into the asthenospheric wedge during steepening of the subduction zone, produced large melting and poorly evolved magmas in an extensional setting. These periods are linked to oceanic plate reorganizations in the late Oligocene and in the early Pliocene.Fil: Ramos, Victor Alberto. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología. Laboratorio de Tectónica Andina; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaFil: Folguera Telichevsky, Andres. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología. Laboratorio de Tectónica Andina; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; ArgentinaGeological Society of London2005-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/93822Ramos, Victor Alberto; Folguera Telichevsky, Andres; Tectonic evolution of the Andes of Neuquén: Constraints derived from the magmatic arc and foreland deformation; Geological Society of London; Geological Society of London Special Publication; 252; 12-2005; 15-350305-8719CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://sp.lyellcollection.org/content/252/1/15info:eu-repo/semantics/altIdentifier/doi/10.1144/GSL.SP.2005.252.01.02info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:10:11Zoai:ri.conicet.gov.ar:11336/93822instacron: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:34982025-10-15 15:10:11.719CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Tectonic evolution of the Andes of Neuquén: Constraints derived from the magmatic arc and foreland deformation
title Tectonic evolution of the Andes of Neuquén: Constraints derived from the magmatic arc and foreland deformation
spellingShingle Tectonic evolution of the Andes of Neuquén: Constraints derived from the magmatic arc and foreland deformation
Ramos, Victor Alberto
tectonica
neuquen
title_short Tectonic evolution of the Andes of Neuquén: Constraints derived from the magmatic arc and foreland deformation
title_full Tectonic evolution of the Andes of Neuquén: Constraints derived from the magmatic arc and foreland deformation
title_fullStr Tectonic evolution of the Andes of Neuquén: Constraints derived from the magmatic arc and foreland deformation
title_full_unstemmed Tectonic evolution of the Andes of Neuquén: Constraints derived from the magmatic arc and foreland deformation
title_sort Tectonic evolution of the Andes of Neuquén: Constraints derived from the magmatic arc and foreland deformation
dc.creator.none.fl_str_mv Ramos, Victor Alberto
Folguera Telichevsky, Andres
author Ramos, Victor Alberto
author_facet Ramos, Victor Alberto
Folguera Telichevsky, Andres
author_role author
author2 Folguera Telichevsky, Andres
author2_role author
dc.subject.none.fl_str_mv tectonica
neuquen
topic tectonica
neuquen
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.5
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The Andes of Neuquén (36°- 38°SL) have distinctive characteristics within the Central Andes inherited from the alternation of periods of generalized extension and subsequent compression. The Loncopué trough, as a result of these processes, is an unique long depression at the foothills parallel to the Principal Cordillera, and consists of a complex half-graben system produced during Oligocene times and extensionally reactivated in the Pliocene – Pleistocene. Its northern sector concentrates the present contractional orogenic front. The nature and volume of the arc-related igneous rocks, location of the volcanic fronts, expansions and retreats of the magmatism, and the associated igneous activity in the foreland, together with the analyses of the superimposed structural styles, permitted to constrain the alternating tectonic regimes. On these bases, different stages from Jurassic to Present are correlated with changes in the geometry of the Benioff zone through time. Period of steepening of the subduction zone are associated with large volumes of poorly evolved magmas and generalized extension. On the other hand, shallowing of the subduction zones are linked to foreland migration of more evolved magmas associated with contraction and uplift in the Principal Cordillera. The injection of hot asthenospheric material from the subcontinental mantle into the asthenospheric wedge during steepening of the subduction zone, produced large melting and poorly evolved magmas in an extensional setting. These periods are linked to oceanic plate reorganizations in the late Oligocene and in the early Pliocene.
Fil: Ramos, Victor Alberto. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología. Laboratorio de Tectónica Andina; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
Fil: Folguera Telichevsky, Andres. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Departamento de Geología. Laboratorio de Tectónica Andina; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Estudios Andinos "Don Pablo Groeber". Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Estudios Andinos "Don Pablo Groeber"; Argentina
description The Andes of Neuquén (36°- 38°SL) have distinctive characteristics within the Central Andes inherited from the alternation of periods of generalized extension and subsequent compression. The Loncopué trough, as a result of these processes, is an unique long depression at the foothills parallel to the Principal Cordillera, and consists of a complex half-graben system produced during Oligocene times and extensionally reactivated in the Pliocene – Pleistocene. Its northern sector concentrates the present contractional orogenic front. The nature and volume of the arc-related igneous rocks, location of the volcanic fronts, expansions and retreats of the magmatism, and the associated igneous activity in the foreland, together with the analyses of the superimposed structural styles, permitted to constrain the alternating tectonic regimes. On these bases, different stages from Jurassic to Present are correlated with changes in the geometry of the Benioff zone through time. Period of steepening of the subduction zone are associated with large volumes of poorly evolved magmas and generalized extension. On the other hand, shallowing of the subduction zones are linked to foreland migration of more evolved magmas associated with contraction and uplift in the Principal Cordillera. The injection of hot asthenospheric material from the subcontinental mantle into the asthenospheric wedge during steepening of the subduction zone, produced large melting and poorly evolved magmas in an extensional setting. These periods are linked to oceanic plate reorganizations in the late Oligocene and in the early Pliocene.
publishDate 2005
dc.date.none.fl_str_mv 2005-12
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/11336/93822
Ramos, Victor Alberto; Folguera Telichevsky, Andres; Tectonic evolution of the Andes of Neuquén: Constraints derived from the magmatic arc and foreland deformation; Geological Society of London; Geological Society of London Special Publication; 252; 12-2005; 15-35
0305-8719
CONICET Digital
CONICET
url http://hdl.handle.net/11336/93822
identifier_str_mv Ramos, Victor Alberto; Folguera Telichevsky, Andres; Tectonic evolution of the Andes of Neuquén: Constraints derived from the magmatic arc and foreland deformation; Geological Society of London; Geological Society of London Special Publication; 252; 12-2005; 15-35
0305-8719
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://sp.lyellcollection.org/content/252/1/15
info:eu-repo/semantics/altIdentifier/doi/10.1144/GSL.SP.2005.252.01.02
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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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 Geological Society of London
publisher.none.fl_str_mv Geological Society of London
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
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 13.22299

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