Geochronology (U-PB/PB-PB) and isotopic signature (RB-SR/SM-ND) of the paleoproterozoic guanambi batholith, Southwest Bahia State (ne Brazil)

Detalhes bibliográficos
Autor(a) principal: Conceicao, Herbet
Data de Publicação: 2000
Outros Autores: Oberli, Felix, Meier, Martin, Martin, Hervé, Macambira, Moacir José Buenano, Santos, Emerson Barreto dos, Paim, Marcio Mattos, Leahy, Geraldo Augusto da Silva, Leal, Luiz Rogerio Bastos
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/2571
Resumo: p.062-065
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spelling Conceicao, HerbetOberli, FelixMeier, MartinMartin, HervéMacambira, Moacir José BuenanoSantos, Emerson Barreto dosPaim, Marcio MattosLeahy, Geraldo Augusto da SilvaLeal, Luiz Rogerio BastosConceicao, HerbetOberli, FelixMeier, MartinMartin, HervéMacambira, Moacir José BuenanoSantos, Emerson Barreto dosPaim, Marcio MattosLeahy, Geraldo Augusto da SilvaLeal, Luiz Rogerio Bastos2011-09-06T14:44:52Z2011-09-06T14:44:52Z20002177-4382http://www.repositorio.ufba.br/ri/handle/ri/2571v. 30, n. 1.p.062-065The Guanambi batholith (GB) is located in south-western Bahia, Brazil, where it forms part of the Urandi-Paratinga mobile belt. The batholith extends over an area of almost 6,000 km2 and is mainly composed of syenites and monzonites, with subordinate granites, mafic syenites and lamprophyric dykes. Two main units can be recognized: the multiple intrusions, being divided into four regions (Paratinga, Laguna, Igapora and Guanambi) and the so-called late-intrusions forming the Cara Suja, Cerafma and Estreito massifs. U-Pb and Pb-Pb isotopic data demonstrate that the batholith was emplaced 2.05 Ga ago. GB has (i) highly negative initial εNd (-7.4 to -10.6), pointing to an enriched source, and (ii) Sr initial ratios between 0.704 and 0.707. Both chemical and isotopic signatures suggest that GB formed by fractional crystallization of a lamprophyric magma derived from a Paleoproterozoic enriched mantle source.Submitted by Ana Valéria de Jesus Moura (anavaleria_131@hotmail.com) on 2011-09-06T14:44:51Z No. of bitstreams: 1 10573-35524-1-PB.pdf: 240584 bytes, checksum: 30774cf438b2d41e381a5dabe8fcb39b (MD5)Made available in DSpace on 2011-09-06T14:44:52Z (GMT). No. of bitstreams: 1 10573-35524-1-PB.pdf: 240584 bytes, checksum: 30774cf438b2d41e381a5dabe8fcb39b (MD5) Previous issue date: 2000Guanambi batholith. Geochronology. Enriched mantle. 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dc.title.pt_BR.fl_str_mv Geochronology (U-PB/PB-PB) and isotopic signature (RB-SR/SM-ND) of the paleoproterozoic guanambi batholith, Southwest Bahia State (ne Brazil)
dc.title.alternative.pt_BR.fl_str_mv Revista Brasileira de Geociências
title Geochronology (U-PB/PB-PB) and isotopic signature (RB-SR/SM-ND) of the paleoproterozoic guanambi batholith, Southwest Bahia State (ne Brazil)
spellingShingle Geochronology (U-PB/PB-PB) and isotopic signature (RB-SR/SM-ND) of the paleoproterozoic guanambi batholith, Southwest Bahia State (ne Brazil)
Conceicao, Herbet
Guanambi batholith. Geochronology. Enriched mantle. Syenites
title_short Geochronology (U-PB/PB-PB) and isotopic signature (RB-SR/SM-ND) of the paleoproterozoic guanambi batholith, Southwest Bahia State (ne Brazil)
title_full Geochronology (U-PB/PB-PB) and isotopic signature (RB-SR/SM-ND) of the paleoproterozoic guanambi batholith, Southwest Bahia State (ne Brazil)
title_fullStr Geochronology (U-PB/PB-PB) and isotopic signature (RB-SR/SM-ND) of the paleoproterozoic guanambi batholith, Southwest Bahia State (ne Brazil)
title_full_unstemmed Geochronology (U-PB/PB-PB) and isotopic signature (RB-SR/SM-ND) of the paleoproterozoic guanambi batholith, Southwest Bahia State (ne Brazil)
title_sort Geochronology (U-PB/PB-PB) and isotopic signature (RB-SR/SM-ND) of the paleoproterozoic guanambi batholith, Southwest Bahia State (ne Brazil)
author Conceicao, Herbet
author_facet Conceicao, Herbet
Oberli, Felix
Meier, Martin
Martin, Hervé
Macambira, Moacir José Buenano
Santos, Emerson Barreto dos
Paim, Marcio Mattos
Leahy, Geraldo Augusto da Silva
Leal, Luiz Rogerio Bastos
author_role author
author2 Oberli, Felix
Meier, Martin
Martin, Hervé
Macambira, Moacir José Buenano
Santos, Emerson Barreto dos
Paim, Marcio Mattos
Leahy, Geraldo Augusto da Silva
Leal, Luiz Rogerio Bastos
author2_role author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Conceicao, Herbet
Oberli, Felix
Meier, Martin
Martin, Hervé
Macambira, Moacir José Buenano
Santos, Emerson Barreto dos
Paim, Marcio Mattos
Leahy, Geraldo Augusto da Silva
Leal, Luiz Rogerio Bastos
Conceicao, Herbet
Oberli, Felix
Meier, Martin
Martin, Hervé
Macambira, Moacir José Buenano
Santos, Emerson Barreto dos
Paim, Marcio Mattos
Leahy, Geraldo Augusto da Silva
Leal, Luiz Rogerio Bastos
dc.subject.por.fl_str_mv Guanambi batholith. Geochronology. Enriched mantle. Syenites
topic Guanambi batholith. Geochronology. Enriched mantle. Syenites
description p.062-065
publishDate 2000
dc.date.issued.fl_str_mv 2000
dc.date.accessioned.fl_str_mv 2011-09-06T14:44:52Z
dc.date.available.fl_str_mv 2011-09-06T14:44:52Z
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://www.repositorio.ufba.br/ri/handle/ri/2571
dc.identifier.issn.none.fl_str_mv 2177-4382
dc.identifier.number.pt_BR.fl_str_mv v. 30, n. 1.
identifier_str_mv 2177-4382
v. 30, n. 1.
url http://www.repositorio.ufba.br/ri/handle/ri/2571
dc.language.iso.fl_str_mv eng
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