The Barreiras Group in the Northeastern coast of the State of Bahia, Brazil: depositional mechanisms and processes
Autor(a) principal: | |
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Data de Publicação: | 2001 |
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/3209 |
Resumo: | p. 417 - 427 |
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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 |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFBA instname:Universidade Federal da Bahia (UFBA) instacron:UFBA |
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Universidade Federal da Bahia (UFBA) |
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UFBA |
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UFBA |
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Repositório Institucional da UFBA |
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Repositório Institucional da UFBA |
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