Petrological and Geochemical Characteristics of the Granulitic Terrain of BrejGes, Bahia, Brazil
Autor(a) principal: | |
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Data de Publicação: | 1998 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFBA |
Texto Completo: | http://www.repositorio.ufba.br/ri/handle/ri/5140 |
Resumo: | p. 343-356 |
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Barbosa, Johildo Salomão FigueirêdoSilva, Fernando Alves daSapucaia, Najara SantosIyer, Sundaram Sankara SubbaBarbosa, Johildo Salomão FigueirêdoSilva, Fernando Alves daSapucaia, Najara SantosIyer, Sundaram Sankara Subba2012-01-12T16:22:18Z2012-01-12T16:22:18Z19981342-937Xhttp://www.repositorio.ufba.br/ri/handle/ri/5140v. 3, n. 4.p. 343-356New petrological and geochemical characteristics of the Brejbes region, situated in the south of Bahia, Brazil are discussed. The region forms a part of the most important and extensive granulite facies terrain in Brazil of Archean/Paleoproterozoic age. Five groups of rock types all equilibrated in the granulite facies are identified in this region. They ars: i) supracrustal and related rocks, ii) undifferentiated granulites, iii) hornblende bearing enderbite-charnockites, iv) hornblende free enderbite-charnockites, v) charnockites. The first group appears to be the oldest in the region as they form enclaves in the 2.9 Ga old undifferentiated granulites. The third and fourth group are enderbite-charnockites, whose protoliths constitute two series of calc-alkaline rocks, one titanium poor (hornblende free) and another titanium rich (hornblende bearing). U/Pb zircon SHRIMP dates indicate ages of formation at 2.8 1 Ga (hornblende free) and 2.69 Ga (hornblende bearing) for the two groups. The fifth group of rocks have charnockitic affinity and are present in the center of the BrejBes Dome. These rocks also have calcalkaline affinity, but show petrographic and geochemical characteristics distinct from those of other groups. Preliminary geochronological investigations by zircon Pb-Pb evaporation method yielded 2.6 Ga and 2.0 Ga for the charnockites from the inner core of the Brejbes Dome. These age data suggest that the circular structure was formed by the re-fusion of the 2.6 Ga old deep crustal material generating younger charnockites at 2.0 Ga.Submitted by Ana Valéria de Jesus Moura (anavaleria_131@hotmail.com) on 2012-01-12T16:22:18Z No. of bitstreams: 1 s2.0-S1342937X05708509-main.pdf: 3104524 bytes, checksum: fd009957ea5c16bbfa21a9f97b21e14f (MD5)Made available in DSpace on 2012-01-12T16:22:18Z (GMT). No. of bitstreams: 1 s2.0-S1342937X05708509-main.pdf: 3104524 bytes, checksum: fd009957ea5c16bbfa21a9f97b21e14f (MD5) Previous issue date: 1998Brejões Domegranulite facies rocksgeochemistrygeochronologyPetrological and Geochemical Characteristics of the Granulitic Terrain of BrejGes, Bahia, BrazilGondwana Researchinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleengreponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAinfo:eu-repo/semantics/openAccessORIGINALs2.0-S1342937X05708509-main.pdfs2.0-S1342937X05708509-main.pdfapplication/pdf3104524https://repositorio.ufba.br/bitstream/ri/5140/1/s2.0-S1342937X05708509-main.pdffd009957ea5c16bbfa21a9f97b21e14fMD51LICENSElicense.txtlicense.txttext/plain1762https://repositorio.ufba.br/bitstream/ri/5140/2/license.txt1b89a9a0548218172d7c829f87a0eab9MD52TEXTs2.0-S1342937X05708509-main.pdf.txts2.0-S1342937X05708509-main.pdf.txtExtracted texttext/plain49714https://repositorio.ufba.br/bitstream/ri/5140/3/s2.0-S1342937X05708509-main.pdf.txt8549e951f5c0cf46d4e68fcb2e2beb36MD53ri/51402022-07-05 14:03:34.454oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-05T17:03:34Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false |
dc.title.pt_BR.fl_str_mv |
Petrological and Geochemical Characteristics of the Granulitic Terrain of BrejGes, Bahia, Brazil |
dc.title.alternative.pt_BR.fl_str_mv |
Gondwana Research |
title |
Petrological and Geochemical Characteristics of the Granulitic Terrain of BrejGes, Bahia, Brazil |
spellingShingle |
Petrological and Geochemical Characteristics of the Granulitic Terrain of BrejGes, Bahia, Brazil Barbosa, Johildo Salomão Figueirêdo Brejões Dome granulite facies rocks geochemistry geochronology |
title_short |
Petrological and Geochemical Characteristics of the Granulitic Terrain of BrejGes, Bahia, Brazil |
title_full |
Petrological and Geochemical Characteristics of the Granulitic Terrain of BrejGes, Bahia, Brazil |
title_fullStr |
Petrological and Geochemical Characteristics of the Granulitic Terrain of BrejGes, Bahia, Brazil |
title_full_unstemmed |
Petrological and Geochemical Characteristics of the Granulitic Terrain of BrejGes, Bahia, Brazil |
title_sort |
Petrological and Geochemical Characteristics of the Granulitic Terrain of BrejGes, Bahia, Brazil |
author |
Barbosa, Johildo Salomão Figueirêdo |
author_facet |
Barbosa, Johildo Salomão Figueirêdo Silva, Fernando Alves da Sapucaia, Najara Santos Iyer, Sundaram Sankara Subba |
author_role |
author |
author2 |
Silva, Fernando Alves da Sapucaia, Najara Santos Iyer, Sundaram Sankara Subba |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Barbosa, Johildo Salomão Figueirêdo Silva, Fernando Alves da Sapucaia, Najara Santos Iyer, Sundaram Sankara Subba Barbosa, Johildo Salomão Figueirêdo Silva, Fernando Alves da Sapucaia, Najara Santos Iyer, Sundaram Sankara Subba |
dc.subject.por.fl_str_mv |
Brejões Dome granulite facies rocks geochemistry geochronology |
topic |
Brejões Dome granulite facies rocks geochemistry geochronology |
description |
p. 343-356 |
publishDate |
1998 |
dc.date.issued.fl_str_mv |
1998 |
dc.date.accessioned.fl_str_mv |
2012-01-12T16:22:18Z |
dc.date.available.fl_str_mv |
2012-01-12T16:22:18Z |
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/5140 |
dc.identifier.issn.none.fl_str_mv |
1342-937X |
dc.identifier.number.pt_BR.fl_str_mv |
v. 3, n. 4. |
identifier_str_mv |
1342-937X v. 3, n. 4. |
url |
http://www.repositorio.ufba.br/ri/handle/ri/5140 |
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eng |
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eng |
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info:eu-repo/semantics/openAccess |
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openAccess |
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Universidade Federal da Bahia (UFBA) |
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