Depositional, diagenetic and stratigraphic aspects of Macaé Group carbonates (Albian): Example from an oilfield from Campos Basin
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/23174889201500020005 http://hdl.handle.net/11449/171926 |
Resumo: | Carbonate rocks from the Macaé Group (Albian) represent an example of carbonate sedimentation related to the drift phase in Campos Basin. This study presents depositional features, integrating them with diagenetic and stratigraphic aspects of the Macaé Group carbonates including the upper part of the Quissamã Formation and the lower part of the Outeiro Formation. Macroscopic analyses in cores and microscopic ones in thin sections allowed the recognition of eleven sedimentary facies - nine of them corresponding to the Quissamã Formation and two of them representing the Outeiro Formation. These facies were grouped into five facies associations. Oolitic grainstones and oncolitic grainstones are interpreted to be deposited in shallow depth probably in shoals above the fair weather wave base. The interbanks between shoals were formed in less agitated waters and characterized by deposition of peloidal bioclastic packstones and wackestones representative of sedimentation in calm waters. Bioclastic packstones and oolitic packstones/wackestones represent allochthonous deposits related to the beginning of the regional drowning that occur in upper Quissamã Formation. Pithonellids wackestones and bioclastic wackestones with glauconite are related to deep water deposits, characteristics of the Outeiro Formation. Post-depositional features revealed the action of diagenetic processes as, micritization, cimentation, dissolution, compaction, dolomitization and recrystallization occurred during the eoand mesodiagenesis phases. Vertical facies analysis suggests shallowing upward cycles stacked in a sequence progressively deeper towards the top (from the Quissamã Formation to the Outeiro Formation). |
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Repositório Institucional da UNESP |
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Depositional, diagenetic and stratigraphic aspects of Macaé Group carbonates (Albian): Example from an oilfield from Campos BasinCarbonate rocksDiagenesisFaciesFormationOuteiro formationQuissamãCarbonate rocks from the Macaé Group (Albian) represent an example of carbonate sedimentation related to the drift phase in Campos Basin. This study presents depositional features, integrating them with diagenetic and stratigraphic aspects of the Macaé Group carbonates including the upper part of the Quissamã Formation and the lower part of the Outeiro Formation. Macroscopic analyses in cores and microscopic ones in thin sections allowed the recognition of eleven sedimentary facies - nine of them corresponding to the Quissamã Formation and two of them representing the Outeiro Formation. These facies were grouped into five facies associations. Oolitic grainstones and oncolitic grainstones are interpreted to be deposited in shallow depth probably in shoals above the fair weather wave base. The interbanks between shoals were formed in less agitated waters and characterized by deposition of peloidal bioclastic packstones and wackestones representative of sedimentation in calm waters. Bioclastic packstones and oolitic packstones/wackestones represent allochthonous deposits related to the beginning of the regional drowning that occur in upper Quissamã Formation. Pithonellids wackestones and bioclastic wackestones with glauconite are related to deep water deposits, characteristics of the Outeiro Formation. Post-depositional features revealed the action of diagenetic processes as, micritization, cimentation, dissolution, compaction, dolomitization and recrystallization occurred during the eoand mesodiagenesis phases. Vertical facies analysis suggests shallowing upward cycles stacked in a sequence progressively deeper towards the top (from the Quissamã Formation to the Outeiro Formation).Programa de Pós-Graduação em Geologia Regional, Instituto de Geociências e Ciências Exatas, Universidade Estadual Paulista - UNESPPetrobrasDepartamento de Geologia Aplicada, Instituto de Geociências e Ciências Exatas, Universidade Estadual Paulista - UNESPPrograma de Pós-Graduação em Geologia Regional, Instituto de Geociências e Ciências Exatas, Universidade Estadual Paulista - UNESPDepartamento de Geologia Aplicada, Instituto de Geociências e Ciências Exatas, Universidade Estadual Paulista - UNESPUniversidade Estadual Paulista (Unesp)PetrobrasOkubo, Juliana [UNESP]Lykawka, RicardoWarren, Lucas Veríssimo [UNESP]Favoreto, Julia [UNESP]Dias-Brito, Dimas [UNESP]2018-12-11T16:57:45Z2018-12-11T16:57:45Z2015-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article243-258application/pdfhttp://dx.doi.org/10.1590/23174889201500020005Brazilian Journal of Geology, v. 45, n. 2, p. 243-258, 2015.2317-46922317-4889http://hdl.handle.net/11449/17192610.1590/23174889201500020005S2317-488920150002002432-s2.0-84936862328S2317-48892015000200243.pdf1333845337012256Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBrazilian Journal of Geology0,6080,608info:eu-repo/semantics/openAccess2023-10-31T06:07:19Zoai:repositorio.unesp.br:11449/171926Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:30:22.055840Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Depositional, diagenetic and stratigraphic aspects of Macaé Group carbonates (Albian): Example from an oilfield from Campos Basin |
title |
Depositional, diagenetic and stratigraphic aspects of Macaé Group carbonates (Albian): Example from an oilfield from Campos Basin |
spellingShingle |
Depositional, diagenetic and stratigraphic aspects of Macaé Group carbonates (Albian): Example from an oilfield from Campos Basin Okubo, Juliana [UNESP] Carbonate rocks Diagenesis Facies Formation Outeiro formation Quissamã |
title_short |
Depositional, diagenetic and stratigraphic aspects of Macaé Group carbonates (Albian): Example from an oilfield from Campos Basin |
title_full |
Depositional, diagenetic and stratigraphic aspects of Macaé Group carbonates (Albian): Example from an oilfield from Campos Basin |
title_fullStr |
Depositional, diagenetic and stratigraphic aspects of Macaé Group carbonates (Albian): Example from an oilfield from Campos Basin |
title_full_unstemmed |
Depositional, diagenetic and stratigraphic aspects of Macaé Group carbonates (Albian): Example from an oilfield from Campos Basin |
title_sort |
Depositional, diagenetic and stratigraphic aspects of Macaé Group carbonates (Albian): Example from an oilfield from Campos Basin |
author |
Okubo, Juliana [UNESP] |
author_facet |
Okubo, Juliana [UNESP] Lykawka, Ricardo Warren, Lucas Veríssimo [UNESP] Favoreto, Julia [UNESP] Dias-Brito, Dimas [UNESP] |
author_role |
author |
author2 |
Lykawka, Ricardo Warren, Lucas Veríssimo [UNESP] Favoreto, Julia [UNESP] Dias-Brito, Dimas [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Petrobras |
dc.contributor.author.fl_str_mv |
Okubo, Juliana [UNESP] Lykawka, Ricardo Warren, Lucas Veríssimo [UNESP] Favoreto, Julia [UNESP] Dias-Brito, Dimas [UNESP] |
dc.subject.por.fl_str_mv |
Carbonate rocks Diagenesis Facies Formation Outeiro formation Quissamã |
topic |
Carbonate rocks Diagenesis Facies Formation Outeiro formation Quissamã |
description |
Carbonate rocks from the Macaé Group (Albian) represent an example of carbonate sedimentation related to the drift phase in Campos Basin. This study presents depositional features, integrating them with diagenetic and stratigraphic aspects of the Macaé Group carbonates including the upper part of the Quissamã Formation and the lower part of the Outeiro Formation. Macroscopic analyses in cores and microscopic ones in thin sections allowed the recognition of eleven sedimentary facies - nine of them corresponding to the Quissamã Formation and two of them representing the Outeiro Formation. These facies were grouped into five facies associations. Oolitic grainstones and oncolitic grainstones are interpreted to be deposited in shallow depth probably in shoals above the fair weather wave base. The interbanks between shoals were formed in less agitated waters and characterized by deposition of peloidal bioclastic packstones and wackestones representative of sedimentation in calm waters. Bioclastic packstones and oolitic packstones/wackestones represent allochthonous deposits related to the beginning of the regional drowning that occur in upper Quissamã Formation. Pithonellids wackestones and bioclastic wackestones with glauconite are related to deep water deposits, characteristics of the Outeiro Formation. Post-depositional features revealed the action of diagenetic processes as, micritization, cimentation, dissolution, compaction, dolomitization and recrystallization occurred during the eoand mesodiagenesis phases. Vertical facies analysis suggests shallowing upward cycles stacked in a sequence progressively deeper towards the top (from the Quissamã Formation to the Outeiro Formation). |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-01-01 2018-12-11T16:57:45Z 2018-12-11T16:57:45Z |
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://dx.doi.org/10.1590/23174889201500020005 Brazilian Journal of Geology, v. 45, n. 2, p. 243-258, 2015. 2317-4692 2317-4889 http://hdl.handle.net/11449/171926 10.1590/23174889201500020005 S2317-48892015000200243 2-s2.0-84936862328 S2317-48892015000200243.pdf 1333845337012256 |
url |
http://dx.doi.org/10.1590/23174889201500020005 http://hdl.handle.net/11449/171926 |
identifier_str_mv |
Brazilian Journal of Geology, v. 45, n. 2, p. 243-258, 2015. 2317-4692 2317-4889 10.1590/23174889201500020005 S2317-48892015000200243 2-s2.0-84936862328 S2317-48892015000200243.pdf 1333845337012256 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Brazilian Journal of Geology 0,608 0,608 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
243-258 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
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1808128663678353408 |