Grenvillian massif-type anorthosites in the Sierras Pampeanas

Autores
Casquet, César; Pankhurst, Robert J.; Rapela, Carlos Washington; Galindo, Carmen; Dahlquist, Juan A.; Baldo, Edgardo G.; Saavedra, Julio; González Casado, J.M.; Fanning, Christopher
Año de publicación
2005
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We report the discovery of massif-type anorthosites in the Andean basement of the Western Sierras Pampeanas of Argentina. U–Pb zircon dating (by sensitive high-resolution ion microprobe) of a cogenetic gabbronorite dyke yields ages of 1070 ± 41 Ma for igneous emplacement and 431 ± 40 Ma for metamorphism. These anorthosites are petrologically and geochemically comparable with those of the Grenville province of Laurentia. Palaeogeographical reconstructions of Rodinia at 1.0–1.1 Ga suggest that the Sierras Pampeanas anorthosites were part of a large anorthosite province in the late Mesoproterozoic.
Centro de Investigaciones Geológicas
Materia
Geología
Sierras Pampeanas
Argentina
Neoproterozoic
Rodinia
SHRIMP data
Anorthosites
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/128391
Acceder
id SEDICI_35ead1e416a7cc835312d31aee4e2b28
oai_identifier_str oai:sedici.unlp.edu.ar:10915/128391
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Grenvillian massif-type anorthosites in the Sierras PampeanasCasquet, CésarPankhurst, Robert J.Rapela, Carlos WashingtonGalindo, CarmenDahlquist, Juan A.Baldo, Edgardo G.Saavedra, JulioGonzález Casado, J.M.Fanning, ChristopherGeologíaSierras PampeanasArgentinaNeoproterozoicRodiniaSHRIMP dataAnorthositesWe report the discovery of massif-type anorthosites in the Andean basement of the Western Sierras Pampeanas of Argentina. U–Pb zircon dating (by sensitive high-resolution ion microprobe) of a cogenetic gabbronorite dyke yields ages of 1070 ± 41 Ma for igneous emplacement and 431 ± 40 Ma for metamorphism. These anorthosites are petrologically and geochemically comparable with those of the Grenville province of Laurentia. Palaeogeographical reconstructions of Rodinia at 1.0–1.1 Ga suggest that the Sierras Pampeanas anorthosites were part of a large anorthosite province in the late Mesoproterozoic.Centro de Investigaciones Geológicas2005info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf9-12http://sedici.unlp.edu.ar/handle/10915/128391enginfo:eu-repo/semantics/altIdentifier/issn/0016-7649info:eu-repo/semantics/altIdentifier/issn/2041-479Xinfo:eu-repo/semantics/altIdentifier/doi/10.1144/0016-764904-100info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-03T11:03:08Zoai:sedici.unlp.edu.ar:10915/128391Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 11:03:08.673SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Grenvillian massif-type anorthosites in the Sierras Pampeanas
title Grenvillian massif-type anorthosites in the Sierras Pampeanas
spellingShingle Grenvillian massif-type anorthosites in the Sierras Pampeanas
Casquet, César
Geología
Sierras Pampeanas
Argentina
Neoproterozoic
Rodinia
SHRIMP data
Anorthosites
title_short Grenvillian massif-type anorthosites in the Sierras Pampeanas
title_full Grenvillian massif-type anorthosites in the Sierras Pampeanas
title_fullStr Grenvillian massif-type anorthosites in the Sierras Pampeanas
title_full_unstemmed Grenvillian massif-type anorthosites in the Sierras Pampeanas
title_sort Grenvillian massif-type anorthosites in the Sierras Pampeanas
dc.creator.none.fl_str_mv Casquet, César
Pankhurst, Robert J.
Rapela, Carlos Washington
Galindo, Carmen
Dahlquist, Juan A.
Baldo, Edgardo G.
Saavedra, Julio
González Casado, J.M.
Fanning, Christopher
author Casquet, César
author_facet Casquet, César
Pankhurst, Robert J.
Rapela, Carlos Washington
Galindo, Carmen
Dahlquist, Juan A.
Baldo, Edgardo G.
Saavedra, Julio
González Casado, J.M.
Fanning, Christopher
author_role author
author2 Pankhurst, Robert J.
Rapela, Carlos Washington
Galindo, Carmen
Dahlquist, Juan A.
Baldo, Edgardo G.
Saavedra, Julio
González Casado, J.M.
Fanning, Christopher
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Geología
Sierras Pampeanas
Argentina
Neoproterozoic
Rodinia
SHRIMP data
Anorthosites
topic Geología
Sierras Pampeanas
Argentina
Neoproterozoic
Rodinia
SHRIMP data
Anorthosites
dc.description.none.fl_txt_mv We report the discovery of massif-type anorthosites in the Andean basement of the Western Sierras Pampeanas of Argentina. U–Pb zircon dating (by sensitive high-resolution ion microprobe) of a cogenetic gabbronorite dyke yields ages of 1070 ± 41 Ma for igneous emplacement and 431 ± 40 Ma for metamorphism. These anorthosites are petrologically and geochemically comparable with those of the Grenville province of Laurentia. Palaeogeographical reconstructions of Rodinia at 1.0–1.1 Ga suggest that the Sierras Pampeanas anorthosites were part of a large anorthosite province in the late Mesoproterozoic.
Centro de Investigaciones Geológicas
description We report the discovery of massif-type anorthosites in the Andean basement of the Western Sierras Pampeanas of Argentina. U–Pb zircon dating (by sensitive high-resolution ion microprobe) of a cogenetic gabbronorite dyke yields ages of 1070 ± 41 Ma for igneous emplacement and 431 ± 40 Ma for metamorphism. These anorthosites are petrologically and geochemically comparable with those of the Grenville province of Laurentia. Palaeogeographical reconstructions of Rodinia at 1.0–1.1 Ga suggest that the Sierras Pampeanas anorthosites were part of a large anorthosite province in the late Mesoproterozoic.
publishDate 2005
dc.date.none.fl_str_mv 2005
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/128391
url http://sedici.unlp.edu.ar/handle/10915/128391
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0016-7649
info:eu-repo/semantics/altIdentifier/issn/2041-479X
info:eu-repo/semantics/altIdentifier/doi/10.1144/0016-764904-100
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
9-12
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.13397

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