Re–Os age constraints and new observations of Proterozoic glacial deposits in the Vazante Group, Brazil

Detalhes bibliográficos
Autor(a) principal: Geboy, Nicholas J.
Data de Publicação: 2013
Outros Autores: Kaufman, Alan J., Walker, Richard J., Misi, Aroldo, Oliviera, Tolentino Flavio de, Miller, Kristen E., Azmy, Karem, Kendall, Brian, Poulton, Simon W.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://repositorio.ufba.br/ri/handle/ri/15873
Resumo: Texto completo: acesso restrito. p. 199–213
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spelling Geboy, Nicholas J.Kaufman, Alan J.Walker, Richard J.Misi, AroldoOliviera, Tolentino Flavio deMiller, Kristen E.Azmy, KaremKendall, BrianPoulton, Simon W.Geboy, Nicholas J.Kaufman, Alan J.Walker, Richard J.Misi, AroldoOliviera, Tolentino Flavio deMiller, Kristen E.Azmy, KaremKendall, BrianPoulton, Simon W.2014-09-09T14:36:04Z20130301-9268http://repositorio.ufba.br/ri/handle/ri/15873v. 238Texto completo: acesso restrito. p. 199–213A new Re–Os radiometric age date for an organic-rich shale horizon from the Vazante Group in Brazil, coupled with geological observations, provide evidence for late Mesoproterozoic glacial episodes, conflicting with the general view of greenhouse conditions marked by a eustatic high stand at this time. Field observations of a reverse fault juxtaposing older Mesoproterozoic sedimentary rocks above younger Neoproterozoic strata provide a new stratigraphic framework and reconcile the apparent inversion of U–Pb detrital zircon ages through the succession. Combined, the geochronological, geochemical and stratigraphic evidence suggest that the Vazante Group sediments accumulated along a passive margin of the São Francisco craton and are correlative with the neighboring Paranoá Group. Biomarker, sulfur isotope and iron speciation analyses support the interpretation of a strongly stratified water column during post-glacial transgression and deposition of one of the bituminous shale horizons. The relationship of the glaciogenic Vazante Group to other late Mesoproterozoic successions, such as the non-glacial Atar Group in West Africa and Bylot Supergroup in arctic Canada, however, remains enigmatic.Submitted by Suelen Reis (suziy.ellen@gmail.com) on 2014-04-10T15:35:52Z No. of bitstreams: 1 1-s2.0-S0301926813003057-main.pdf: 2918680 bytes, checksum: cd12440aba74da3f168db1df211dafbe (MD5)Approved for entry into archive by Rodrigo Meirelles (rodrigomei@ufba.br) on 2014-09-09T14:36:04Z (GMT) No. of bitstreams: 1 1-s2.0-S0301926813003057-main.pdf: 2918680 bytes, checksum: cd12440aba74da3f168db1df211dafbe (MD5)Made available in DSpace on 2014-09-09T14:36:04Z (GMT). No. of bitstreams: 1 1-s2.0-S0301926813003057-main.pdf: 2918680 bytes, checksum: cd12440aba74da3f168db1df211dafbe (MD5) Previous issue date: 2013http://dx.doi.org/10.1016/j.precamres.2013.10.010reponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAVazante GroupMesoproterozoic glaciationRe–Os geochronologyFe-speciationRe–Os age constraints and new observations of Proterozoic glacial deposits in the Vazante Group, BrazilPrecambrian Researchinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10000-01-01info:eu-repo/semantics/openAccessengORIGINAL1-s2.0-S0301926813003057-main.pdf1-s2.0-S0301926813003057-main.pdfapplication/pdf2918680https://repositorio.ufba.br/bitstream/ri/15873/1/1-s2.0-S0301926813003057-main.pdfcd12440aba74da3f168db1df211dafbeMD51LICENSElicense.txtlicense.txttext/plain1345https://repositorio.ufba.br/bitstream/ri/15873/2/license.txt0d4b811ef71182510d2015daa7c8a900MD52TEXT1-s2.0-S0301926813003057-main.pdf.txt1-s2.0-S0301926813003057-main.pdf.txtExtracted texttext/plain76049https://repositorio.ufba.br/bitstream/ri/15873/3/1-s2.0-S0301926813003057-main.pdf.txtcb649744ecfe5a4ee24a14e0698eb5e4MD53ri/158732022-07-05 14:03:13.735oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-05T17:03:13Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv Re–Os age constraints and new observations of Proterozoic glacial deposits in the Vazante Group, Brazil
dc.title.alternative.pt_BR.fl_str_mv Precambrian Research
title Re–Os age constraints and new observations of Proterozoic glacial deposits in the Vazante Group, Brazil
spellingShingle Re–Os age constraints and new observations of Proterozoic glacial deposits in the Vazante Group, Brazil
Geboy, Nicholas J.
Vazante Group
Mesoproterozoic glaciation
Re–Os geochronology
Fe-speciation
title_short Re–Os age constraints and new observations of Proterozoic glacial deposits in the Vazante Group, Brazil
title_full Re–Os age constraints and new observations of Proterozoic glacial deposits in the Vazante Group, Brazil
title_fullStr Re–Os age constraints and new observations of Proterozoic glacial deposits in the Vazante Group, Brazil
title_full_unstemmed Re–Os age constraints and new observations of Proterozoic glacial deposits in the Vazante Group, Brazil
title_sort Re–Os age constraints and new observations of Proterozoic glacial deposits in the Vazante Group, Brazil
author Geboy, Nicholas J.
author_facet Geboy, Nicholas J.
Kaufman, Alan J.
Walker, Richard J.
Misi, Aroldo
Oliviera, Tolentino Flavio de
Miller, Kristen E.
Azmy, Karem
Kendall, Brian
Poulton, Simon W.
author_role author
author2 Kaufman, Alan J.
Walker, Richard J.
Misi, Aroldo
Oliviera, Tolentino Flavio de
Miller, Kristen E.
Azmy, Karem
Kendall, Brian
Poulton, Simon W.
author2_role author
author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Geboy, Nicholas J.
Kaufman, Alan J.
Walker, Richard J.
Misi, Aroldo
Oliviera, Tolentino Flavio de
Miller, Kristen E.
Azmy, Karem
Kendall, Brian
Poulton, Simon W.
Geboy, Nicholas J.
Kaufman, Alan J.
Walker, Richard J.
Misi, Aroldo
Oliviera, Tolentino Flavio de
Miller, Kristen E.
Azmy, Karem
Kendall, Brian
Poulton, Simon W.
dc.subject.por.fl_str_mv Vazante Group
Mesoproterozoic glaciation
Re–Os geochronology
Fe-speciation
topic Vazante Group
Mesoproterozoic glaciation
Re–Os geochronology
Fe-speciation
description Texto completo: acesso restrito. p. 199–213
publishDate 2013
dc.date.issued.fl_str_mv 2013
dc.date.accessioned.fl_str_mv 2014-09-09T14:36:04Z
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://repositorio.ufba.br/ri/handle/ri/15873
dc.identifier.issn.none.fl_str_mv 0301-9268
dc.identifier.number.pt_BR.fl_str_mv v. 238
identifier_str_mv 0301-9268
v. 238
url http://repositorio.ufba.br/ri/handle/ri/15873
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.source.pt_BR.fl_str_mv http://dx.doi.org/10.1016/j.precamres.2013.10.010
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname:Universidade Federal da Bahia (UFBA)
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reponame_str Repositório Institucional da UFBA
collection Repositório Institucional da UFBA
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