Metamorphic evolution and P-T path of gneisses from Goiás Magmatic Arc in southwestern Goiás State

Detalhes bibliográficos
Autor(a) principal: Navarro, Guillermo Rafael Beltrano [UNESP]
Data de Publicação: 2013
Outros Autores: Zanardo, Antenor, Conceição, Fabiano Tomazini da [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://rbg.sbgeo.org.br/index.php/rbg/article/view/26053
http://hdl.handle.net/11449/135117
Resumo: In the southwestern Goiás State, the rocks of the Goiás Magmatic Arc present mineral assemblages typical of the amphibolite facies. Thermobarometric calculations show that P and T conditions for associations involving amphibole + biotite + kyanite + staurolite + garnet + plagioclase + muscovite, biotite + garnet + plagioclase + muscovite, amphibole + biotite + garnet + plagioclase, belong to the middle amphibolite facies in the staurolite-kyanite field, reaching temperatures and pressure higher than 600ºC and 7 kbar, respectively. The P-T path is clockwise and the values obtained by thermobarometric calculations are interpreted as a retrometamorphic reequilibrium in the amphibolite facies.
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spelling Metamorphic evolution and P-T path of gneisses from Goiás Magmatic Arc in southwestern Goiás StateBrasília BeltGoiás Magmatic ArcMineral chemistryThermobarometryFaixa BrasíliaArco Magmático de GoiásQuímica mineralTermobarometriaIn the southwestern Goiás State, the rocks of the Goiás Magmatic Arc present mineral assemblages typical of the amphibolite facies. Thermobarometric calculations show that P and T conditions for associations involving amphibole + biotite + kyanite + staurolite + garnet + plagioclase + muscovite, biotite + garnet + plagioclase + muscovite, amphibole + biotite + garnet + plagioclase, belong to the middle amphibolite facies in the staurolite-kyanite field, reaching temperatures and pressure higher than 600ºC and 7 kbar, respectively. The P-T path is clockwise and the values obtained by thermobarometric calculations are interpreted as a retrometamorphic reequilibrium in the amphibolite facies.No sudoeste do estado de Goiás, as rochas do Arco Magmático de Goiás apresentam associações minerais típicas da fácies anfibolito. Cálculos termobarométricos mostram que as condições P e T para associações envolvendo anfibólio + biotita + cianita + estaurolita + granada + plagioclásio + muscovita, biotita + granada + plagioclásio + muscovita, anfibólio + biotita + granada + plagioclásio são da fácies anfibolito médio, na zona da cianita-estaurolita, atingindo temperaturas e pressões maiores que 600ºC e 7 kbar, respectivamente. A trajetória P e T é horária, e os valores obtidos nos cálculos termobarométricos são interpretados como um reequilíbrio retrometamórfico de fácies anfibolito.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Departamento de Petrologia e Metalogenia - DPM, Universidade Estadual Paulista “Júlio de Mesquita Filho” - UNESP, Rio Claro (SP), BrasilDepartamento de Planejamento Territorial e Geoprocessamento - DEPLAM, Universidade Estadual Paulista “Júlio de Mesquita Filho” - UNESP, Rio Claro (SP), BrasilDepartamento de Petrologia e Metalogenia - DPM, Universidade Estadual Paulista “Júlio de Mesquita Filho” - UNESP, Rio Claro (SP), Brasil. E-mail: navarro@rc.unesp.br, azanardo@rc.unesp.brDepartamento de Planejamento Territorial e Geoprocessamento - DEPLAM, Universidade Estadual Paulista “Júlio de Mesquita Filho” - UNESP, Rio Claro (SP), Brasil. E-mail: ftomazini@rc.unesp.brFAPESP: 08/50723-0FAPESP: 05/59203-1CNPq: 301216/2008-8Universidade Estadual Paulista (Unesp)Navarro, Guillermo Rafael Beltrano [UNESP]Zanardo, AntenorConceição, Fabiano Tomazini da [UNESP]2016-03-02T12:59:49Z2016-03-02T12:59:49Z2013info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article301-315application/pdfhttp://rbg.sbgeo.org.br/index.php/rbg/article/view/26053Brazilian Journal of Geology, v. 43, n. 2, p. 301-315, 2013.2317-4692http://hdl.handle.net/11449/135117ISSN2317-4692-2013-43-02-301-315.pdf68932729001740598029643138865007Currículo Lattesreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBrazilian Journal of Geology0,608info:eu-repo/semantics/openAccess2024-01-01T06:15:47Zoai:repositorio.unesp.br:11449/135117Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:49:28.258670Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Metamorphic evolution and P-T path of gneisses from Goiás Magmatic Arc in southwestern Goiás State
title Metamorphic evolution and P-T path of gneisses from Goiás Magmatic Arc in southwestern Goiás State
spellingShingle Metamorphic evolution and P-T path of gneisses from Goiás Magmatic Arc in southwestern Goiás State
Navarro, Guillermo Rafael Beltrano [UNESP]
Brasília Belt
Goiás Magmatic Arc
Mineral chemistry
Thermobarometry
Faixa Brasília
Arco Magmático de Goiás
Química mineral
Termobarometria
title_short Metamorphic evolution and P-T path of gneisses from Goiás Magmatic Arc in southwestern Goiás State
title_full Metamorphic evolution and P-T path of gneisses from Goiás Magmatic Arc in southwestern Goiás State
title_fullStr Metamorphic evolution and P-T path of gneisses from Goiás Magmatic Arc in southwestern Goiás State
title_full_unstemmed Metamorphic evolution and P-T path of gneisses from Goiás Magmatic Arc in southwestern Goiás State
title_sort Metamorphic evolution and P-T path of gneisses from Goiás Magmatic Arc in southwestern Goiás State
author Navarro, Guillermo Rafael Beltrano [UNESP]
author_facet Navarro, Guillermo Rafael Beltrano [UNESP]
Zanardo, Antenor
Conceição, Fabiano Tomazini da [UNESP]
author_role author
author2 Zanardo, Antenor
Conceição, Fabiano Tomazini da [UNESP]
author2_role author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Navarro, Guillermo Rafael Beltrano [UNESP]
Zanardo, Antenor
Conceição, Fabiano Tomazini da [UNESP]
dc.subject.por.fl_str_mv Brasília Belt
Goiás Magmatic Arc
Mineral chemistry
Thermobarometry
Faixa Brasília
Arco Magmático de Goiás
Química mineral
Termobarometria
topic Brasília Belt
Goiás Magmatic Arc
Mineral chemistry
Thermobarometry
Faixa Brasília
Arco Magmático de Goiás
Química mineral
Termobarometria
description In the southwestern Goiás State, the rocks of the Goiás Magmatic Arc present mineral assemblages typical of the amphibolite facies. Thermobarometric calculations show that P and T conditions for associations involving amphibole + biotite + kyanite + staurolite + garnet + plagioclase + muscovite, biotite + garnet + plagioclase + muscovite, amphibole + biotite + garnet + plagioclase, belong to the middle amphibolite facies in the staurolite-kyanite field, reaching temperatures and pressure higher than 600ºC and 7 kbar, respectively. The P-T path is clockwise and the values obtained by thermobarometric calculations are interpreted as a retrometamorphic reequilibrium in the amphibolite facies.
publishDate 2013
dc.date.none.fl_str_mv 2013
2016-03-02T12:59:49Z
2016-03-02T12:59:49Z
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://rbg.sbgeo.org.br/index.php/rbg/article/view/26053
Brazilian Journal of Geology, v. 43, n. 2, p. 301-315, 2013.
2317-4692
http://hdl.handle.net/11449/135117
ISSN2317-4692-2013-43-02-301-315.pdf
6893272900174059
8029643138865007
url http://rbg.sbgeo.org.br/index.php/rbg/article/view/26053
http://hdl.handle.net/11449/135117
identifier_str_mv Brazilian Journal of Geology, v. 43, n. 2, p. 301-315, 2013.
2317-4692
ISSN2317-4692-2013-43-02-301-315.pdf
6893272900174059
8029643138865007
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Brazilian Journal of Geology
0,608
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 301-315
application/pdf
dc.source.none.fl_str_mv Currículo Lattes
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_ 1808129362427379712

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