Caracterização petrográfica e geoquímica da parte leste do Granito Europa, Distrito Mineiro de Pitinga, AM

Detalhes bibliográficos
Autor(a) principal: Prado, Maurício
Data de Publicação: 2007
Outros Autores: Ferron, José Maximino Tadeu Miras, Lima, Evandro Fernandes de, Bastos Neto, Artur Cezar, Pereira, Vitor Paulo, Minuzzi, Orlando Renato Rigon, Pierosan, Ronaldo
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/22631
Resumo: The important mineral deposits of the Pitinga Mine, in the Amazonian region are related to A-type granites intruded in the Iricoumé Group. The Europa granite is one of these A-type rocks, intruded in the Iricoumé Group, which is represented by subaerial vulcanoclastic rocks (crystal-rich ignimbrites, thin massive tuffs and siltic tufaceous arenites) and minor hipabissal rhyolites. The volcanic rocks were probably generated in a caldera environment. The Europa granite is an alkali-feldspar peralkaline granite (hipersolvus) without genetic relationship with to the volcanic rocks of the Iricoumé Group, but it could have been generated during the resurgence stages. The petrographic and geochemical data attest that fractional crystallization process was the principal mechanism during the crystallization, which led to the generation of two different granitic facies. The Nb soil anomalies overprinted on the more differentiated facies are related to the astrophillite weathering.
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spelling Prado, MaurícioFerron, José Maximino Tadeu MirasLima, Evandro Fernandes deBastos Neto, Artur CezarPereira, Vitor PauloMinuzzi, Orlando Renato RigonPierosan, Ronaldo2010-05-20T04:16:28Z20071518-2398http://hdl.handle.net/10183/22631000639970The important mineral deposits of the Pitinga Mine, in the Amazonian region are related to A-type granites intruded in the Iricoumé Group. The Europa granite is one of these A-type rocks, intruded in the Iricoumé Group, which is represented by subaerial vulcanoclastic rocks (crystal-rich ignimbrites, thin massive tuffs and siltic tufaceous arenites) and minor hipabissal rhyolites. The volcanic rocks were probably generated in a caldera environment. The Europa granite is an alkali-feldspar peralkaline granite (hipersolvus) without genetic relationship with to the volcanic rocks of the Iricoumé Group, but it could have been generated during the resurgence stages. The petrographic and geochemical data attest that fractional crystallization process was the principal mechanism during the crystallization, which led to the generation of two different granitic facies. The Nb soil anomalies overprinted on the more differentiated facies are related to the astrophillite weathering.application/pdfporPesquisas em Geociências. Vol. 34, n. 1 (jan./jun. 2007), p. 77-90PetrografiaGeoquímicaGranito EuropaMina PitingaPitinga (Presidente Figueiredo, AM)Europa granitePitinga mineNiobiumA-type graniteCaracterização petrográfica e geoquímica da parte leste do Granito Europa, Distrito Mineiro de Pitinga, AMinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSTEXT000639970.pdf.txt000639970.pdf.txtExtracted Texttext/plain45835http://www.lume.ufrgs.br/bitstream/10183/22631/2/000639970.pdf.txtede4a69cb9dbe748cfc7e124bc666174MD52ORIGINAL000639970.pdf000639970.pdfTexto completoapplication/pdf1786504http://www.lume.ufrgs.br/bitstream/10183/22631/1/000639970.pdf905f1fff7810bb650b188e437c210af2MD51THUMBNAIL000639970.pdf.jpg000639970.pdf.jpgGenerated Thumbnailimage/jpeg2180http://www.lume.ufrgs.br/bitstream/10183/22631/3/000639970.pdf.jpg3561f5fb95245520799b176e961038b7MD5310183/226312020-08-28 03:33:13.746oai:www.lume.ufrgs.br:10183/22631Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2020-08-28T06:33:13Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Caracterização petrográfica e geoquímica da parte leste do Granito Europa, Distrito Mineiro de Pitinga, AM
title Caracterização petrográfica e geoquímica da parte leste do Granito Europa, Distrito Mineiro de Pitinga, AM
spellingShingle Caracterização petrográfica e geoquímica da parte leste do Granito Europa, Distrito Mineiro de Pitinga, AM
Prado, Maurício
Petrografia
Geoquímica
Granito Europa
Mina Pitinga
Pitinga (Presidente Figueiredo, AM)
Europa granite
Pitinga mine
Niobium
A-type granite
title_short Caracterização petrográfica e geoquímica da parte leste do Granito Europa, Distrito Mineiro de Pitinga, AM
title_full Caracterização petrográfica e geoquímica da parte leste do Granito Europa, Distrito Mineiro de Pitinga, AM
title_fullStr Caracterização petrográfica e geoquímica da parte leste do Granito Europa, Distrito Mineiro de Pitinga, AM
title_full_unstemmed Caracterização petrográfica e geoquímica da parte leste do Granito Europa, Distrito Mineiro de Pitinga, AM
title_sort Caracterização petrográfica e geoquímica da parte leste do Granito Europa, Distrito Mineiro de Pitinga, AM
author Prado, Maurício
author_facet Prado, Maurício
Ferron, José Maximino Tadeu Miras
Lima, Evandro Fernandes de
Bastos Neto, Artur Cezar
Pereira, Vitor Paulo
Minuzzi, Orlando Renato Rigon
Pierosan, Ronaldo
author_role author
author2 Ferron, José Maximino Tadeu Miras
Lima, Evandro Fernandes de
Bastos Neto, Artur Cezar
Pereira, Vitor Paulo
Minuzzi, Orlando Renato Rigon
Pierosan, Ronaldo
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Prado, Maurício
Ferron, José Maximino Tadeu Miras
Lima, Evandro Fernandes de
Bastos Neto, Artur Cezar
Pereira, Vitor Paulo
Minuzzi, Orlando Renato Rigon
Pierosan, Ronaldo
dc.subject.por.fl_str_mv Petrografia
Geoquímica
Granito Europa
Mina Pitinga
Pitinga (Presidente Figueiredo, AM)
topic Petrografia
Geoquímica
Granito Europa
Mina Pitinga
Pitinga (Presidente Figueiredo, AM)
Europa granite
Pitinga mine
Niobium
A-type granite
dc.subject.eng.fl_str_mv Europa granite
Pitinga mine
Niobium
A-type granite
description The important mineral deposits of the Pitinga Mine, in the Amazonian region are related to A-type granites intruded in the Iricoumé Group. The Europa granite is one of these A-type rocks, intruded in the Iricoumé Group, which is represented by subaerial vulcanoclastic rocks (crystal-rich ignimbrites, thin massive tuffs and siltic tufaceous arenites) and minor hipabissal rhyolites. The volcanic rocks were probably generated in a caldera environment. The Europa granite is an alkali-feldspar peralkaline granite (hipersolvus) without genetic relationship with to the volcanic rocks of the Iricoumé Group, but it could have been generated during the resurgence stages. The petrographic and geochemical data attest that fractional crystallization process was the principal mechanism during the crystallization, which led to the generation of two different granitic facies. The Nb soil anomalies overprinted on the more differentiated facies are related to the astrophillite weathering.
publishDate 2007
dc.date.issued.fl_str_mv 2007
dc.date.accessioned.fl_str_mv 2010-05-20T04:16:28Z
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/22631
dc.identifier.issn.pt_BR.fl_str_mv 1518-2398
dc.identifier.nrb.pt_BR.fl_str_mv 000639970
identifier_str_mv 1518-2398
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url http://hdl.handle.net/10183/22631
dc.language.iso.fl_str_mv por
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dc.relation.ispartof.pt_BR.fl_str_mv Pesquisas em Geociências. Vol. 34, n. 1 (jan./jun. 2007), p. 77-90
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFRGS
instname:Universidade Federal do Rio Grande do Sul (UFRGS)
instacron:UFRGS
instname_str Universidade Federal do Rio Grande do Sul (UFRGS)
instacron_str UFRGS
institution UFRGS
reponame_str Repositório Institucional da UFRGS
collection Repositório Institucional da UFRGS
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