The Barreiras Group in the Northeastern coast of the State of Bahia, Brazil: depositional mechanisms and processes

Detalhes bibliográficos
Autor(a) principal: Vilas Boas, Geraldo da Silva
Data de Publicação: 2001
Outros Autores: Sampaio, Flávio José, Pereira, Antonio M. S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/3209
Resumo: p. 417 - 427
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spelling Vilas Boas, Geraldo da SilvaSampaio, Flávio JoséPereira, Antonio M. S.Vilas Boas, Geraldo da SilvaSampaio, Flávio JoséPereira, Antonio M. S.2011-10-07T20:40:10Z2011-10-07T20:40:10Z20011678-2690http://www.repositorio.ufba.br/ri/handle/ri/3209v. 73, n. 3.p. 417 - 427The Barreiras Group is a Miocene to Lower Pleistocene continental terrigenous sedimentary deposit exhibiting a large occurrence along the Brazilian coast. In the Conde region, located in the northeastern part of the State of Bahia, the sedimentological characteristics of these sediments are indicative of a deposition as gravelly and sandy bed load in braided fluvial systems, related to alluvial fans, under an arid to semi-arid climate. The basal portion of the group is dominated by a gravelly-sandy lithofacies deposited by debris flows and pseudoplastic debris flows, with lesser occurrences of subaqueous deposits, characterizing a proximal fluvial system deposition. The upper portion is made up of gravelly-sandy sediments that include subaqueous, debris flows and pseudoplastic debris flows deposits. They suggest deposition in a more distal zone as indicated by the larger occurrence of subaqueous deposits and the presence, though rare, of downstream-accretion macroforms. Besides the climate control, deposition of the Barreiras Group was strongly influenced by the intraplate tectonism, which has been affecting the South America Platform since the Middle Miocene, when neotectonism began in Brazil.Submitted by Ana Valéria de Jesus Moura (anavaleria_131@hotmail.com) on 2011-10-07T20:40:10Z No. of bitstreams: 1 v73n3a10.pdf: 4781113 bytes, checksum: 484e3fbc177b29de1c94a40c9a28117c (MD5)Made available in DSpace on 2011-10-07T20:40:10Z (GMT). No. of bitstreams: 1 v73n3a10.pdf: 4781113 bytes, checksum: 484e3fbc177b29de1c94a40c9a28117c (MD5) Previous issue date: 2001Barreiras GroupTertiaryCenozoicState of BahiaThe Barreiras Group in the Northeastern coast of the State of Bahia, Brazil: depositional mechanisms and processesAnais da Academia Brasileira de Ciênciasinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleengreponame:Repositório Institucional da UFBAinstname:Universidade Federal da Bahia (UFBA)instacron:UFBAinfo:eu-repo/semantics/openAccessORIGINALv73n3a10.pdfv73n3a10.pdfapplication/pdf4781113https://repositorio.ufba.br/bitstream/ri/3209/1/v73n3a10.pdf484e3fbc177b29de1c94a40c9a28117cMD51LICENSElicense.txtlicense.txttext/plain1918https://repositorio.ufba.br/bitstream/ri/3209/2/license.txt2ef188fd1259aa97c70f0959a7730aa1MD52TEXTv73n3a10.pdf.txtv73n3a10.pdf.txtExtracted texttext/plain29549https://repositorio.ufba.br/bitstream/ri/3209/3/v73n3a10.pdf.txt13944d0f75055a9989ae14b65507f173MD53ri/32092022-07-05 14:03:24.133oai:repositorio.ufba.br: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Repositório InstitucionalPUBhttp://192.188.11.11:8080/oai/requestopendoar:19322022-07-05T17:03:24Repositório Institucional da UFBA - Universidade Federal da Bahia (UFBA)false
dc.title.pt_BR.fl_str_mv The Barreiras Group in the Northeastern coast of the State of Bahia, Brazil: depositional mechanisms and processes
dc.title.alternative.pt_BR.fl_str_mv Anais da Academia Brasileira de Ciências
title The Barreiras Group in the Northeastern coast of the State of Bahia, Brazil: depositional mechanisms and processes
spellingShingle The Barreiras Group in the Northeastern coast of the State of Bahia, Brazil: depositional mechanisms and processes
Vilas Boas, Geraldo da Silva
Barreiras Group
Tertiary
Cenozoic
State of Bahia
title_short The Barreiras Group in the Northeastern coast of the State of Bahia, Brazil: depositional mechanisms and processes
title_full The Barreiras Group in the Northeastern coast of the State of Bahia, Brazil: depositional mechanisms and processes
title_fullStr The Barreiras Group in the Northeastern coast of the State of Bahia, Brazil: depositional mechanisms and processes
title_full_unstemmed The Barreiras Group in the Northeastern coast of the State of Bahia, Brazil: depositional mechanisms and processes
title_sort The Barreiras Group in the Northeastern coast of the State of Bahia, Brazil: depositional mechanisms and processes
author Vilas Boas, Geraldo da Silva
author_facet Vilas Boas, Geraldo da Silva
Sampaio, Flávio José
Pereira, Antonio M. S.
author_role author
author2 Sampaio, Flávio José
Pereira, Antonio M. S.
author2_role author
author
dc.contributor.author.fl_str_mv Vilas Boas, Geraldo da Silva
Sampaio, Flávio José
Pereira, Antonio M. S.
Vilas Boas, Geraldo da Silva
Sampaio, Flávio José
Pereira, Antonio M. S.
dc.subject.por.fl_str_mv Barreiras Group
Tertiary
Cenozoic
State of Bahia
topic Barreiras Group
Tertiary
Cenozoic
State of Bahia
description p. 417 - 427
publishDate 2001
dc.date.issued.fl_str_mv 2001
dc.date.accessioned.fl_str_mv 2011-10-07T20:40:10Z
dc.date.available.fl_str_mv 2011-10-07T20:40:10Z
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/3209
dc.identifier.issn.none.fl_str_mv 1678-2690
dc.identifier.number.pt_BR.fl_str_mv v. 73, n. 3.
identifier_str_mv 1678-2690
v. 73, n. 3.
url http://www.repositorio.ufba.br/ri/handle/ri/3209
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
instname:Universidade Federal da Bahia (UFBA)
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instname_str Universidade Federal da Bahia (UFBA)
instacron_str UFBA
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reponame_str Repositório Institucional da UFBA
collection Repositório Institucional da UFBA
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