New geochronological constraints on the geological evolution of Espinhaço basin within the São Francisco Craton - Brazil.

Detalhes bibliográficos
Autor(a) principal: Danderfer Filho, André
Data de Publicação: 2009
Outros Autores: Waele, Bert De, Pedreira, Augusto José de Cerqueira Lima, Nalini Júnior, Hermínio Arias
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFOP
Texto Completo: http://www.repositorio.ufop.br/handle/123456789/3751
https://doi.org/10.1016/j.precamres.2009.01.002
Resumo: The São Francisco Craton, in the central-eastern region of Brazil, is a cratonic fragment stabilized after the Rhyacian tectono-metamorphic event (2.25–2.05 Ga). Volcanic and sedimentary rocks of the Espinhac¸ o (Paleo- to Mesoproterozoic) and São Francisco (Neoproterozoic) basins crop out on this craton. In the northern sector of the craton, the Espinhac¸ o basin crops out in two domains: the Northern Espinhac¸ o Range and the Chapada Diamantina, that are separated by the Paramirim Corridor, a Brasiliano/Pan African (650–500 Ma) deformation zone, which crosses the craton in NNW–SSE direction. The stratigraphic framework of the Northern Espinhac¸ o is characterized by eight synthems that comprise units bound by unconformities, or stratigraphic discontinuities with regional extent over the Espinhac¸ o basin. These synthems are: Algodão, São Simão, Sapiranga, Pajeú and Bom Retiro (lower interval), São Marcos and Sítio Novo (intermediate interval) and Santo Onofre (upper interval). For each interval the sedimentary processes, the depositional systems, the filling style of the basin and the tectonic settings were evaluated, based mainly on the facies association characteristics and their lateral/vertical changes. Zircon U–Pb SHRIMP and basin analysis studies carried out along the eastern border of the Northern Espinhac¸ o Range provide a few new or improved anchors upon which the tectonic evolution of the Espinhaco basin can be pinned. We identified Statherian rifting in the São Simão Synthem, by dating volcanic rocks at 1.73 Ga. This is followed by a previously unknown, minor intracratonic rift phase within the São Francisco Craton, dated at circa 1.57 Ga through a volcanic unit within the Pajeú Synthem. The entire lower interval is cut by mafic intrusive dykes of which we dated one at 850 Ma, which we correlate with a Tonian rifting phase affecting the eastern part of the São Francisco craton, and related to the break-up of the Rodinia Supercontinent. Our data showthat the development of the Northern Espinhac¸ o Range spans a large time interval, and comprises a discontinuous series of tectonic events that gave rise to the formation of the various synthems and are punctuated by the extrusion of minor volcanic units and emplacement of dykes within the eastern part of the São Francisco Craton.
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spelling New geochronological constraints on the geological evolution of Espinhaço basin within the São Francisco Craton - Brazil.São Francisco CratonBasin analysisRodinia supercontinentTectonicsGeochronologyThe São Francisco Craton, in the central-eastern region of Brazil, is a cratonic fragment stabilized after the Rhyacian tectono-metamorphic event (2.25–2.05 Ga). Volcanic and sedimentary rocks of the Espinhac¸ o (Paleo- to Mesoproterozoic) and São Francisco (Neoproterozoic) basins crop out on this craton. In the northern sector of the craton, the Espinhac¸ o basin crops out in two domains: the Northern Espinhac¸ o Range and the Chapada Diamantina, that are separated by the Paramirim Corridor, a Brasiliano/Pan African (650–500 Ma) deformation zone, which crosses the craton in NNW–SSE direction. The stratigraphic framework of the Northern Espinhac¸ o is characterized by eight synthems that comprise units bound by unconformities, or stratigraphic discontinuities with regional extent over the Espinhac¸ o basin. These synthems are: Algodão, São Simão, Sapiranga, Pajeú and Bom Retiro (lower interval), São Marcos and Sítio Novo (intermediate interval) and Santo Onofre (upper interval). For each interval the sedimentary processes, the depositional systems, the filling style of the basin and the tectonic settings were evaluated, based mainly on the facies association characteristics and their lateral/vertical changes. Zircon U–Pb SHRIMP and basin analysis studies carried out along the eastern border of the Northern Espinhac¸ o Range provide a few new or improved anchors upon which the tectonic evolution of the Espinhaco basin can be pinned. We identified Statherian rifting in the São Simão Synthem, by dating volcanic rocks at 1.73 Ga. This is followed by a previously unknown, minor intracratonic rift phase within the São Francisco Craton, dated at circa 1.57 Ga through a volcanic unit within the Pajeú Synthem. The entire lower interval is cut by mafic intrusive dykes of which we dated one at 850 Ma, which we correlate with a Tonian rifting phase affecting the eastern part of the São Francisco craton, and related to the break-up of the Rodinia Supercontinent. Our data showthat the development of the Northern Espinhac¸ o Range spans a large time interval, and comprises a discontinuous series of tectonic events that gave rise to the formation of the various synthems and are punctuated by the extrusion of minor volcanic units and emplacement of dykes within the eastern part of the São Francisco Craton.2014-11-10T17:08:52Z2014-11-10T17:08:52Z2009info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfDANDERFER FILHO, A. et al. New geochronological constraints on the geological evolution of Espinhaço basin within the São Francisco Craton - Brazil. Precambrian Research, v. 170, p. 116-128, 2009. Disponível em: <https://www.sciencedirect.com/science/article/pii/S0301926809000163>. Acesso em: 11 set. 2014.0301-9268http://www.repositorio.ufop.br/handle/123456789/3751https://doi.org/10.1016/j.precamres.2009.01.002O periódico Precambrian Research concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3466700283142.info:eu-repo/semantics/openAccessDanderfer Filho, AndréWaele, Bert DePedreira, Augusto José de Cerqueira LimaNalini Júnior, Hermínio Ariasengreponame:Repositório Institucional da UFOPinstname:Universidade Federal de Ouro Preto (UFOP)instacron:UFOP2019-05-06T17:45:36Zoai:repositorio.ufop.br:123456789/3751Repositório InstitucionalPUBhttp://www.repositorio.ufop.br/oai/requestrepositorio@ufop.edu.bropendoar:32332019-05-06T17:45:36Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)false
dc.title.none.fl_str_mv New geochronological constraints on the geological evolution of Espinhaço basin within the São Francisco Craton - Brazil.
title New geochronological constraints on the geological evolution of Espinhaço basin within the São Francisco Craton - Brazil.
spellingShingle New geochronological constraints on the geological evolution of Espinhaço basin within the São Francisco Craton - Brazil.
Danderfer Filho, André
São Francisco Craton
Basin analysis
Rodinia supercontinent
Tectonics
Geochronology
title_short New geochronological constraints on the geological evolution of Espinhaço basin within the São Francisco Craton - Brazil.
title_full New geochronological constraints on the geological evolution of Espinhaço basin within the São Francisco Craton - Brazil.
title_fullStr New geochronological constraints on the geological evolution of Espinhaço basin within the São Francisco Craton - Brazil.
title_full_unstemmed New geochronological constraints on the geological evolution of Espinhaço basin within the São Francisco Craton - Brazil.
title_sort New geochronological constraints on the geological evolution of Espinhaço basin within the São Francisco Craton - Brazil.
author Danderfer Filho, André
author_facet Danderfer Filho, André
Waele, Bert De
Pedreira, Augusto José de Cerqueira Lima
Nalini Júnior, Hermínio Arias
author_role author
author2 Waele, Bert De
Pedreira, Augusto José de Cerqueira Lima
Nalini Júnior, Hermínio Arias
author2_role author
author
author
dc.contributor.author.fl_str_mv Danderfer Filho, André
Waele, Bert De
Pedreira, Augusto José de Cerqueira Lima
Nalini Júnior, Hermínio Arias
dc.subject.por.fl_str_mv São Francisco Craton
Basin analysis
Rodinia supercontinent
Tectonics
Geochronology
topic São Francisco Craton
Basin analysis
Rodinia supercontinent
Tectonics
Geochronology
description The São Francisco Craton, in the central-eastern region of Brazil, is a cratonic fragment stabilized after the Rhyacian tectono-metamorphic event (2.25–2.05 Ga). Volcanic and sedimentary rocks of the Espinhac¸ o (Paleo- to Mesoproterozoic) and São Francisco (Neoproterozoic) basins crop out on this craton. In the northern sector of the craton, the Espinhac¸ o basin crops out in two domains: the Northern Espinhac¸ o Range and the Chapada Diamantina, that are separated by the Paramirim Corridor, a Brasiliano/Pan African (650–500 Ma) deformation zone, which crosses the craton in NNW–SSE direction. The stratigraphic framework of the Northern Espinhac¸ o is characterized by eight synthems that comprise units bound by unconformities, or stratigraphic discontinuities with regional extent over the Espinhac¸ o basin. These synthems are: Algodão, São Simão, Sapiranga, Pajeú and Bom Retiro (lower interval), São Marcos and Sítio Novo (intermediate interval) and Santo Onofre (upper interval). For each interval the sedimentary processes, the depositional systems, the filling style of the basin and the tectonic settings were evaluated, based mainly on the facies association characteristics and their lateral/vertical changes. Zircon U–Pb SHRIMP and basin analysis studies carried out along the eastern border of the Northern Espinhac¸ o Range provide a few new or improved anchors upon which the tectonic evolution of the Espinhaco basin can be pinned. We identified Statherian rifting in the São Simão Synthem, by dating volcanic rocks at 1.73 Ga. This is followed by a previously unknown, minor intracratonic rift phase within the São Francisco Craton, dated at circa 1.57 Ga through a volcanic unit within the Pajeú Synthem. The entire lower interval is cut by mafic intrusive dykes of which we dated one at 850 Ma, which we correlate with a Tonian rifting phase affecting the eastern part of the São Francisco craton, and related to the break-up of the Rodinia Supercontinent. Our data showthat the development of the Northern Espinhac¸ o Range spans a large time interval, and comprises a discontinuous series of tectonic events that gave rise to the formation of the various synthems and are punctuated by the extrusion of minor volcanic units and emplacement of dykes within the eastern part of the São Francisco Craton.
publishDate 2009
dc.date.none.fl_str_mv 2009
2014-11-10T17:08:52Z
2014-11-10T17:08:52Z
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 DANDERFER FILHO, A. et al. New geochronological constraints on the geological evolution of Espinhaço basin within the São Francisco Craton - Brazil. Precambrian Research, v. 170, p. 116-128, 2009. Disponível em: <https://www.sciencedirect.com/science/article/pii/S0301926809000163>. Acesso em: 11 set. 2014.
0301-9268
http://www.repositorio.ufop.br/handle/123456789/3751
https://doi.org/10.1016/j.precamres.2009.01.002
identifier_str_mv DANDERFER FILHO, A. et al. New geochronological constraints on the geological evolution of Espinhaço basin within the São Francisco Craton - Brazil. Precambrian Research, v. 170, p. 116-128, 2009. Disponível em: <https://www.sciencedirect.com/science/article/pii/S0301926809000163>. Acesso em: 11 set. 2014.
0301-9268
url http://www.repositorio.ufop.br/handle/123456789/3751
https://doi.org/10.1016/j.precamres.2009.01.002
dc.language.iso.fl_str_mv eng
language eng
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eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFOP
instname:Universidade Federal de Ouro Preto (UFOP)
instacron:UFOP
instname_str Universidade Federal de Ouro Preto (UFOP)
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institution UFOP
reponame_str Repositório Institucional da UFOP
collection Repositório Institucional da UFOP
repository.name.fl_str_mv Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)
repository.mail.fl_str_mv repositorio@ufop.edu.br
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