Geoquímica de gnaisses do arco magmático de goiás na região sul do estado de goiás

Detalhes bibliográficos
Autor(a) principal: Navarro, Guillermo Rafael Beltran [UNESP]
Data de Publicação: 2007
Outros Autores: Zanardo, Antenor [UNESP]
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.5327/Z1519-874X2007000100002
http://hdl.handle.net/11449/69609
Resumo: Granitic to trondhjemitic gneisses from the Pontalina region in the southern part of Goiás State, Central Brazil, have calcic to calc-alkaline, metaluminous to peraluminous compositions. They have low concentrations of alkaline elements, and are enriched in Ba, Sr, K, Rb in relation to Nb, Y, Zr and REE, and have negative anomalies of Nb and Ti, features which are similar to those of magmas generated in magmatic arc environments. Those rocks were previously interpreted as part of the basement of the Brasília Belt, attributed to the Archean to Paleoproterozoic, but new Sm - Nd isotopic data indicate a neoproterozoic age (TDM = 0,9 a 1,2 Ga), and the preliminary geochemical data reveal compositions similar to the gneisses of the other regions belonging to the Goiás Magmatic Arc.
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spelling Geoquímica de gnaisses do arco magmático de goiás na região sul do estado de goiásThe geochemistry of the gneisses of the Goiás Magmatic Arc in the southern region of the Goiás StateBrasilia beltGeochemistryGneissesGoiás magmatic arccalc alkaline rockgeochemistrygneissisotopic compositionmagmatismBrasilia BeltBrazilGoiasPontalinaSouth AmericaGranitic to trondhjemitic gneisses from the Pontalina region in the southern part of Goiás State, Central Brazil, have calcic to calc-alkaline, metaluminous to peraluminous compositions. They have low concentrations of alkaline elements, and are enriched in Ba, Sr, K, Rb in relation to Nb, Y, Zr and REE, and have negative anomalies of Nb and Ti, features which are similar to those of magmas generated in magmatic arc environments. Those rocks were previously interpreted as part of the basement of the Brasília Belt, attributed to the Archean to Paleoproterozoic, but new Sm - Nd isotopic data indicate a neoproterozoic age (TDM = 0,9 a 1,2 Ga), and the preliminary geochemical data reveal compositions similar to the gneisses of the other regions belonging to the Goiás Magmatic Arc.Departamento de Petrologia e Metalogenia Instituto de Geociências e Ciências Exatas UNESP, Av. 24-A 1.515, CEP 13506-900, Rio Claro, SPDepartamento de Petrologia e Metalogenia Instituto de Geociências e Ciências Exatas UNESP, Av. 24-A 1.515, CEP 13506-900, Rio Claro, SPUniversidade Estadual Paulista (Unesp)Navarro, Guillermo Rafael Beltran [UNESP]Zanardo, Antenor [UNESP]2014-05-27T11:22:27Z2014-05-27T11:22:27Z2007-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article19-28application/pdfhttp://dx.doi.org/10.5327/Z1519-874X2007000100002Geologia USP - Serie Cientifica, v. 7, n. 1, p. 19-28, 2007.1519-874Xhttp://hdl.handle.net/11449/6960910.5327/Z1519-874X20070001000022-s2.0-342497255882-s2.0-34249725588.pdf6893272900174059Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporGeologia USP: Serie Cientificainfo:eu-repo/semantics/openAccess2023-10-10T06:09:04Zoai:repositorio.unesp.br:11449/69609Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-10-10T06:09:04Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Geoquímica de gnaisses do arco magmático de goiás na região sul do estado de goiás
The geochemistry of the gneisses of the Goiás Magmatic Arc in the southern region of the Goiás State
title Geoquímica de gnaisses do arco magmático de goiás na região sul do estado de goiás
spellingShingle Geoquímica de gnaisses do arco magmático de goiás na região sul do estado de goiás
Navarro, Guillermo Rafael Beltran [UNESP]
Brasilia belt
Geochemistry
Gneisses
Goiás magmatic arc
calc alkaline rock
geochemistry
gneiss
isotopic composition
magmatism
Brasilia Belt
Brazil
Goias
Pontalina
South America
title_short Geoquímica de gnaisses do arco magmático de goiás na região sul do estado de goiás
title_full Geoquímica de gnaisses do arco magmático de goiás na região sul do estado de goiás
title_fullStr Geoquímica de gnaisses do arco magmático de goiás na região sul do estado de goiás
title_full_unstemmed Geoquímica de gnaisses do arco magmático de goiás na região sul do estado de goiás
title_sort Geoquímica de gnaisses do arco magmático de goiás na região sul do estado de goiás
author Navarro, Guillermo Rafael Beltran [UNESP]
author_facet Navarro, Guillermo Rafael Beltran [UNESP]
Zanardo, Antenor [UNESP]
author_role author
author2 Zanardo, Antenor [UNESP]
author2_role author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Navarro, Guillermo Rafael Beltran [UNESP]
Zanardo, Antenor [UNESP]
dc.subject.por.fl_str_mv Brasilia belt
Geochemistry
Gneisses
Goiás magmatic arc
calc alkaline rock
geochemistry
gneiss
isotopic composition
magmatism
Brasilia Belt
Brazil
Goias
Pontalina
South America
topic Brasilia belt
Geochemistry
Gneisses
Goiás magmatic arc
calc alkaline rock
geochemistry
gneiss
isotopic composition
magmatism
Brasilia Belt
Brazil
Goias
Pontalina
South America
description Granitic to trondhjemitic gneisses from the Pontalina region in the southern part of Goiás State, Central Brazil, have calcic to calc-alkaline, metaluminous to peraluminous compositions. They have low concentrations of alkaline elements, and are enriched in Ba, Sr, K, Rb in relation to Nb, Y, Zr and REE, and have negative anomalies of Nb and Ti, features which are similar to those of magmas generated in magmatic arc environments. Those rocks were previously interpreted as part of the basement of the Brasília Belt, attributed to the Archean to Paleoproterozoic, but new Sm - Nd isotopic data indicate a neoproterozoic age (TDM = 0,9 a 1,2 Ga), and the preliminary geochemical data reveal compositions similar to the gneisses of the other regions belonging to the Goiás Magmatic Arc.
publishDate 2007
dc.date.none.fl_str_mv 2007-04-01
2014-05-27T11:22:27Z
2014-05-27T11:22:27Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.5327/Z1519-874X2007000100002
Geologia USP - Serie Cientifica, v. 7, n. 1, p. 19-28, 2007.
1519-874X
http://hdl.handle.net/11449/69609
10.5327/Z1519-874X2007000100002
2-s2.0-34249725588
2-s2.0-34249725588.pdf
6893272900174059
url http://dx.doi.org/10.5327/Z1519-874X2007000100002
http://hdl.handle.net/11449/69609
identifier_str_mv Geologia USP - Serie Cientifica, v. 7, n. 1, p. 19-28, 2007.
1519-874X
10.5327/Z1519-874X2007000100002
2-s2.0-34249725588
2-s2.0-34249725588.pdf
6893272900174059
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv Geologia USP: Serie Cientifica
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 19-28
application/pdf
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1803045927696465920

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