Petrology and Chemistry of Preeambrian Alkaline Rhyolites from Western Bahia (Brazil)

Detalhes bibliográficos
Autor(a) principal: Sighinolfi, G. P.
Data de Publicação: 1975
Outros Autores: Concegao, Theodora M. L.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://repositorio.ufba.br/ri/handle/ri/13528
Resumo: p. 218-235
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spelling Sighinolfi, G. P.Concegao, Theodora M. L.Sighinolfi, G. P.Concegao, Theodora M. L.2013-11-03T14:20:38Z2013-11-03T14:20:38Z1975http://repositorio.ufba.br/ri/handle/ri/13528v. 22, n. 3-4p. 218-235The petrology and chemistry of alkaline rhyolites from Western Bahia State are investigated. Original mineralogy and bulk chemistry are modified by secondary processes (cataclastic metamorphism, hydrothermal leaching). The overall chemistry suggests a pattern consistent with derivation from material of near quartz-feldspar cotectic composition. This may represent a pathway for crustal fractionation and for partial melting within the continental crust of material of potassium-rich granitic composition. Ancient basemental biotite-rich gneisses are considered to be the most probable starting material. Possible correlations of volcanism with the main tectonics of the area and of the whole Brazilian shield are discussed.Submitted by Santiago Fabio (fabio.ssantiago@hotmail.com) on 2013-10-03T19:31:42Z No. of bitstreams: 1 555555a.pdf: 905485 bytes, checksum: 2a548caf17df977ec33c4182248c8f76 (MD5)Approved for entry into archive by Rodrigo Meirelles (rodrigomei@ufba.br) on 2013-11-03T14:20:37Z (GMT) No. of bitstreams: 1 555555a.pdf: 905485 bytes, checksum: 2a548caf17df977ec33c4182248c8f76 (MD5)Made available in DSpace on 2013-11-03T14:20:38Z (GMT). No. of bitstreams: 1 555555a.pdf: 905485 bytes, checksum: 2a548caf17df977ec33c4182248c8f76 (MD5) Previous issue date: 1975SalvadorTschermaks Min. Petr. Mitt.http://download.springer.com/static/pdf/519/art%253A10.1007%252FBF01087841.pdf?auth66=1381000281_1e4a9b0773713a683dbe95d3d8cf1da0&ext=.pdfreponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAPetrology and Chemistry of Preeambrian Alkaline Rhyolites from Western Bahia (Brazil)Tschermaks Min. Petr. Mitt.info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleenginfo:eu-repo/semantics/openAccessORIGINAL555555a.pdf555555a.pdfapplication/pdf905485https://repositorio.ufba.br/bitstream/ri/13528/1/555555a.pdf2a548caf17df977ec33c4182248c8f76MD51LICENSElicense.txtlicense.txttext/plain1365https://repositorio.ufba.br/bitstream/ri/13528/2/license.txt5371a150bdc863f78dcf39281543bd86MD52TEXT555555a.pdf.txt555555a.pdf.txtExtracted texttext/plain32178https://repositorio.ufba.br/bitstream/ri/13528/3/555555a.pdf.txtba92c8a85b384342d9a036ba7a0aa451MD53ri/135282022-07-05 14:02:50.577oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-05T17:02:50Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv Petrology and Chemistry of Preeambrian Alkaline Rhyolites from Western Bahia (Brazil)
dc.title.alternative.pt_BR.fl_str_mv Tschermaks Min. Petr. Mitt.
title Petrology and Chemistry of Preeambrian Alkaline Rhyolites from Western Bahia (Brazil)
spellingShingle Petrology and Chemistry of Preeambrian Alkaline Rhyolites from Western Bahia (Brazil)
Sighinolfi, G. P.
title_short Petrology and Chemistry of Preeambrian Alkaline Rhyolites from Western Bahia (Brazil)
title_full Petrology and Chemistry of Preeambrian Alkaline Rhyolites from Western Bahia (Brazil)
title_fullStr Petrology and Chemistry of Preeambrian Alkaline Rhyolites from Western Bahia (Brazil)
title_full_unstemmed Petrology and Chemistry of Preeambrian Alkaline Rhyolites from Western Bahia (Brazil)
title_sort Petrology and Chemistry of Preeambrian Alkaline Rhyolites from Western Bahia (Brazil)
author Sighinolfi, G. P.
author_facet Sighinolfi, G. P.
Concegao, Theodora M. L.
author_role author
author2 Concegao, Theodora M. L.
author2_role author
dc.contributor.author.fl_str_mv Sighinolfi, G. P.
Concegao, Theodora M. L.
Sighinolfi, G. P.
Concegao, Theodora M. L.
description p. 218-235
publishDate 1975
dc.date.issued.fl_str_mv 1975
dc.date.accessioned.fl_str_mv 2013-11-03T14:20:38Z
dc.date.available.fl_str_mv 2013-11-03T14:20:38Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://repositorio.ufba.br/ri/handle/ri/13528
dc.identifier.number.pt_BR.fl_str_mv v. 22, n. 3-4
url http://repositorio.ufba.br/ri/handle/ri/13528
identifier_str_mv v. 22, n. 3-4
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Tschermaks Min. Petr. Mitt.
publisher.none.fl_str_mv Tschermaks Min. Petr. Mitt.
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