Age, petrography and geochemistry of Cerro Falkner's granitoid

Autores
Crosta, S.; Vattuone, M.E.; Latorre, C.O.
Año de publicación
2008
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Cerro Falkner is composed of granitic rocks underlying volcanic rocks of the Ventana Formation of Paleogene age. Those intrusives are graniodioritic in composition, metaluminous to peraluminous, subalkaline, with characteristics of volcanic arc granites that are concordant with other granitoids of the Cordillera Patagónica Septentrional's northern segment. The age obtained by the K-Ar method on tschemakitic amphiboles (125 ± 20 Ma) points out a minimun age from the lower Cretaceous for the Cerro Falkner's granodiorite. Therefore the use of the term Los Machis Formation (Upper Cretaceous) would be incorrect for these rocks. This age, allows us to relate the granitic rocks on the study area to the lower Cretaceous, coeval with the volcanism of the Divisadero Group.
Fil:Crosta, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Vattuone, M.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Latorre, C.O. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fuente
Rev. Asoc. Geol. Argent. 2008;63(1):152-155
Materia
Cerro Falkner
Lower Cretaceous Granodiorites
Neuquén
Cretaceous
geochronology
granitoid
granodiorite
igneous geochemistry
Paleogene
petrography
potassium-argon dating
volcanism
Argentina
Cerro Falkner
Neuquen
South America
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_v63_n1_p152_Crosta
Acceder
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oai_identifier_str paperaa:paper_00044822_v63_n1_p152_Crosta
network_acronym_str BDUBAFCEN
repository_id_str 1896
network_name_str Biblioteca Digital (UBA-FCEN)
spelling Age, petrography and geochemistry of Cerro Falkner's granitoid Crosta, S.Vattuone, M.E.Latorre, C.O.Cerro FalknerLower Cretaceous GranodioritesNeuquénCretaceousgeochronologygranitoidgranodioriteigneous geochemistryPaleogenepetrographypotassium-argon datingvolcanismArgentinaCerro FalknerNeuquenSouth AmericaCerro Falkner is composed of granitic rocks underlying volcanic rocks of the Ventana Formation of Paleogene age. Those intrusives are graniodioritic in composition, metaluminous to peraluminous, subalkaline, with characteristics of volcanic arc granites that are concordant with other granitoids of the Cordillera Patagónica Septentrional's northern segment. The age obtained by the K-Ar method on tschemakitic amphiboles (125 ± 20 Ma) points out a minimun age from the lower Cretaceous for the Cerro Falkner's granodiorite. Therefore the use of the term Los Machis Formation (Upper Cretaceous) would be incorrect for these rocks. This age, allows us to relate the granitic rocks on the study area to the lower Cretaceous, coeval with the volcanism of the Divisadero Group.Fil:Crosta, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.Fil:Vattuone, M.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.Fil:Latorre, C.O. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.2008info: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_v63_n1_p152_CrostaRev. Asoc. Geol. Argent. 2008;63(1):152-155reponame: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/ar2025-09-11T10:21:47Zpaperaa:paper_00044822_v63_n1_p152_CrostaInstitucionalhttps://digital.bl.fcen.uba.ar/Universidad públicaNo correspondehttps://digital.bl.fcen.uba.ar/cgi-bin/oaiserver.cgiana@bl.fcen.uba.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:18962025-09-11 10:21:49.254Biblioteca Digital (UBA-FCEN) - Universidad Nacional de Buenos Aires. Facultad de Ciencias Exactas y Naturalesfalse
dc.title.none.fl_str_mv Age, petrography and geochemistry of Cerro Falkner's granitoid
title Age, petrography and geochemistry of Cerro Falkner's granitoid
spellingShingle Age, petrography and geochemistry of Cerro Falkner's granitoid
Crosta, S.
Cerro Falkner
Lower Cretaceous Granodiorites
Neuquén
Cretaceous
geochronology
granitoid
granodiorite
igneous geochemistry
Paleogene
petrography
potassium-argon dating
volcanism
Argentina
Cerro Falkner
Neuquen
South America
title_short Age, petrography and geochemistry of Cerro Falkner's granitoid
title_full Age, petrography and geochemistry of Cerro Falkner's granitoid
title_fullStr Age, petrography and geochemistry of Cerro Falkner's granitoid
title_full_unstemmed Age, petrography and geochemistry of Cerro Falkner's granitoid
title_sort Age, petrography and geochemistry of Cerro Falkner's granitoid
dc.creator.none.fl_str_mv Crosta, S.
Vattuone, M.E.
Latorre, C.O.
author Crosta, S.
author_facet Crosta, S.
Vattuone, M.E.
Latorre, C.O.
author_role author
author2 Vattuone, M.E.
Latorre, C.O.
author2_role author
author
dc.subject.none.fl_str_mv Cerro Falkner
Lower Cretaceous Granodiorites
Neuquén
Cretaceous
geochronology
granitoid
granodiorite
igneous geochemistry
Paleogene
petrography
potassium-argon dating
volcanism
Argentina
Cerro Falkner
Neuquen
South America
topic Cerro Falkner
Lower Cretaceous Granodiorites
Neuquén
Cretaceous
geochronology
granitoid
granodiorite
igneous geochemistry
Paleogene
petrography
potassium-argon dating
volcanism
Argentina
Cerro Falkner
Neuquen
South America
dc.description.none.fl_txt_mv Cerro Falkner is composed of granitic rocks underlying volcanic rocks of the Ventana Formation of Paleogene age. Those intrusives are graniodioritic in composition, metaluminous to peraluminous, subalkaline, with characteristics of volcanic arc granites that are concordant with other granitoids of the Cordillera Patagónica Septentrional's northern segment. The age obtained by the K-Ar method on tschemakitic amphiboles (125 ± 20 Ma) points out a minimun age from the lower Cretaceous for the Cerro Falkner's granodiorite. Therefore the use of the term Los Machis Formation (Upper Cretaceous) would be incorrect for these rocks. This age, allows us to relate the granitic rocks on the study area to the lower Cretaceous, coeval with the volcanism of the Divisadero Group.
Fil:Crosta, S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Vattuone, M.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
Fil:Latorre, C.O. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
description Cerro Falkner is composed of granitic rocks underlying volcanic rocks of the Ventana Formation of Paleogene age. Those intrusives are graniodioritic in composition, metaluminous to peraluminous, subalkaline, with characteristics of volcanic arc granites that are concordant with other granitoids of the Cordillera Patagónica Septentrional's northern segment. The age obtained by the K-Ar method on tschemakitic amphiboles (125 ± 20 Ma) points out a minimun age from the lower Cretaceous for the Cerro Falkner's granodiorite. Therefore the use of the term Los Machis Formation (Upper Cretaceous) would be incorrect for these rocks. This age, allows us to relate the granitic rocks on the study area to the lower Cretaceous, coeval with the volcanism of the Divisadero Group.
publishDate 2008
dc.date.none.fl_str_mv 2008
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_v63_n1_p152_Crosta
url http://hdl.handle.net/20.500.12110/paper_00044822_v63_n1_p152_Crosta
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. 2008;63(1):152-155
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 12.993085

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