Mid-latitude Paleogene dinoflagellate cysts from offshore Santa Catarina (Pelotas Basin, Southern Brazil): Taxonomy and biochronostratigraphy
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.marpetgeo.2021.105167 http://hdl.handle.net/11449/228975 |
Resumo: | Palynological assemblages have been reported in pre-Quaternary deposits of the Pelotas Basin, except in the Santa Catarina Platform, where micropaleontological information is still restricted to calcareous microfossils. The present study documents the taxonomic and biochronostratigraphic analyses of dinoflagellate cysts of 26 cutting samples from well 1-SCS-2, drilled on the northern part of the Pelotas Basin. Palynological assemblages are composed of continental and marine taxa, being dominated by dinoflagellate cysts. A total of 99 taxa, belonging to the orders Gonyaulacales (74 taxa) and Peridiniales (25 taxa), were identified. The main dinoflagellate cysts with biochronostratigraphic value are Hafniasphaera septata, Cerodinium dartmoorium, Membranophoridium perforatum, Cordosphaeridium inodes, Enneadocysta dictyostila, Operculodinium divergens, Corrudinium incompositum, Phthanoperidinium comatum, Phthanoperidinium amoenum and Gelatia inflata. Six palynochronostratigraphic intervals are defined: A (lower to middle Eocene); B (middle to upper Eocene); C (upper Eocene to lower Oligocene); D (lower Oligocene); E (upper Oligocene) and F (upper Oligocene). The integration of the data obtained from dinoflagellate cysts and calcareous nannofossils indicates that the sediments of the Imbé Formation study section were deposited from early to late Eocene (transgressive episode), and those of the Cidreira Formation, during the Oligocene (regressive episode). Biostratigraphic comparisons are displayed, based on the palynological frameworks of Brazilian basins and those of the Northern and Southern Hemisphere. This result allows the correlation of the studied sediments with the intermediate part of the Drift Supersequence in a context of relative sea level rise. |
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Mid-latitude Paleogene dinoflagellate cysts from offshore Santa Catarina (Pelotas Basin, Southern Brazil): Taxonomy and biochronostratigraphyBrazilian continental marginEoceneMicroplanktonOligocenePalynologyPalynostratigraphyPalynological assemblages have been reported in pre-Quaternary deposits of the Pelotas Basin, except in the Santa Catarina Platform, where micropaleontological information is still restricted to calcareous microfossils. The present study documents the taxonomic and biochronostratigraphic analyses of dinoflagellate cysts of 26 cutting samples from well 1-SCS-2, drilled on the northern part of the Pelotas Basin. Palynological assemblages are composed of continental and marine taxa, being dominated by dinoflagellate cysts. A total of 99 taxa, belonging to the orders Gonyaulacales (74 taxa) and Peridiniales (25 taxa), were identified. The main dinoflagellate cysts with biochronostratigraphic value are Hafniasphaera septata, Cerodinium dartmoorium, Membranophoridium perforatum, Cordosphaeridium inodes, Enneadocysta dictyostila, Operculodinium divergens, Corrudinium incompositum, Phthanoperidinium comatum, Phthanoperidinium amoenum and Gelatia inflata. Six palynochronostratigraphic intervals are defined: A (lower to middle Eocene); B (middle to upper Eocene); C (upper Eocene to lower Oligocene); D (lower Oligocene); E (upper Oligocene) and F (upper Oligocene). The integration of the data obtained from dinoflagellate cysts and calcareous nannofossils indicates that the sediments of the Imbé Formation study section were deposited from early to late Eocene (transgressive episode), and those of the Cidreira Formation, during the Oligocene (regressive episode). Biostratigraphic comparisons are displayed, based on the palynological frameworks of Brazilian basins and those of the Northern and Southern Hemisphere. This result allows the correlation of the studied sediments with the intermediate part of the Drift Supersequence in a context of relative sea level rise.Laboratório de Palinologia Marleni Marques-Toigo Programa de Pós-graduação em Geociências Departamento de Paleontologia e Estratigrafia Instituto de Geociências Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, Campus do Vale, CEP 91.540-000Petrobras/Cenpes, Av. Horácio Macedo, 950, Ilha do Fundão, Prédio 32, CEP 21.941-915Departamento de Geología Instituto Geológico del Sur Universidad Nacional del Sur CONICET, Av. Alem, 1253, CP 8.000Centro de Geociências Aplicadas ao Petróleo (UNESPetro) Instituto de Geociências e Ciências Exatas Universidade Estadual Paulista Júlio de Mesquita Filho, Av. 24 A, 1515, CEP 13.506-900Centro de Geociências Aplicadas ao Petróleo (UNESPetro) Instituto de Geociências e Ciências Exatas Universidade Estadual Paulista Júlio de Mesquita Filho, Av. 24 A, 1515, CEP 13.506-900Universidade Federal do Rio Grande do SulPetrobras/CenpesCONICETUniversidade Estadual Paulista (UNESP)Premaor, EduardoFerreira, Elizabete P.Souza, Paulo A.Guerstein, G. RaquelArai, Mitsuru [UNESP]2022-04-29T08:29:38Z2022-04-29T08:29:38Z2021-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.marpetgeo.2021.105167Marine and Petroleum Geology, v. 132.0264-8172http://hdl.handle.net/11449/22897510.1016/j.marpetgeo.2021.1051672-s2.0-85108019900Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMarine and Petroleum Geologyinfo:eu-repo/semantics/openAccess2022-04-29T08:29:38Zoai:repositorio.unesp.br:11449/228975Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:58:44.373496Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Mid-latitude Paleogene dinoflagellate cysts from offshore Santa Catarina (Pelotas Basin, Southern Brazil): Taxonomy and biochronostratigraphy |
title |
Mid-latitude Paleogene dinoflagellate cysts from offshore Santa Catarina (Pelotas Basin, Southern Brazil): Taxonomy and biochronostratigraphy |
spellingShingle |
Mid-latitude Paleogene dinoflagellate cysts from offshore Santa Catarina (Pelotas Basin, Southern Brazil): Taxonomy and biochronostratigraphy Premaor, Eduardo Brazilian continental margin Eocene Microplankton Oligocene Palynology Palynostratigraphy |
title_short |
Mid-latitude Paleogene dinoflagellate cysts from offshore Santa Catarina (Pelotas Basin, Southern Brazil): Taxonomy and biochronostratigraphy |
title_full |
Mid-latitude Paleogene dinoflagellate cysts from offshore Santa Catarina (Pelotas Basin, Southern Brazil): Taxonomy and biochronostratigraphy |
title_fullStr |
Mid-latitude Paleogene dinoflagellate cysts from offshore Santa Catarina (Pelotas Basin, Southern Brazil): Taxonomy and biochronostratigraphy |
title_full_unstemmed |
Mid-latitude Paleogene dinoflagellate cysts from offshore Santa Catarina (Pelotas Basin, Southern Brazil): Taxonomy and biochronostratigraphy |
title_sort |
Mid-latitude Paleogene dinoflagellate cysts from offshore Santa Catarina (Pelotas Basin, Southern Brazil): Taxonomy and biochronostratigraphy |
author |
Premaor, Eduardo |
author_facet |
Premaor, Eduardo Ferreira, Elizabete P. Souza, Paulo A. Guerstein, G. Raquel Arai, Mitsuru [UNESP] |
author_role |
author |
author2 |
Ferreira, Elizabete P. Souza, Paulo A. Guerstein, G. Raquel Arai, Mitsuru [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal do Rio Grande do Sul Petrobras/Cenpes CONICET Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Premaor, Eduardo Ferreira, Elizabete P. Souza, Paulo A. Guerstein, G. Raquel Arai, Mitsuru [UNESP] |
dc.subject.por.fl_str_mv |
Brazilian continental margin Eocene Microplankton Oligocene Palynology Palynostratigraphy |
topic |
Brazilian continental margin Eocene Microplankton Oligocene Palynology Palynostratigraphy |
description |
Palynological assemblages have been reported in pre-Quaternary deposits of the Pelotas Basin, except in the Santa Catarina Platform, where micropaleontological information is still restricted to calcareous microfossils. The present study documents the taxonomic and biochronostratigraphic analyses of dinoflagellate cysts of 26 cutting samples from well 1-SCS-2, drilled on the northern part of the Pelotas Basin. Palynological assemblages are composed of continental and marine taxa, being dominated by dinoflagellate cysts. A total of 99 taxa, belonging to the orders Gonyaulacales (74 taxa) and Peridiniales (25 taxa), were identified. The main dinoflagellate cysts with biochronostratigraphic value are Hafniasphaera septata, Cerodinium dartmoorium, Membranophoridium perforatum, Cordosphaeridium inodes, Enneadocysta dictyostila, Operculodinium divergens, Corrudinium incompositum, Phthanoperidinium comatum, Phthanoperidinium amoenum and Gelatia inflata. Six palynochronostratigraphic intervals are defined: A (lower to middle Eocene); B (middle to upper Eocene); C (upper Eocene to lower Oligocene); D (lower Oligocene); E (upper Oligocene) and F (upper Oligocene). The integration of the data obtained from dinoflagellate cysts and calcareous nannofossils indicates that the sediments of the Imbé Formation study section were deposited from early to late Eocene (transgressive episode), and those of the Cidreira Formation, during the Oligocene (regressive episode). Biostratigraphic comparisons are displayed, based on the palynological frameworks of Brazilian basins and those of the Northern and Southern Hemisphere. This result allows the correlation of the studied sediments with the intermediate part of the Drift Supersequence in a context of relative sea level rise. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-10-01 2022-04-29T08:29:38Z 2022-04-29T08:29:38Z |
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/10.1016/j.marpetgeo.2021.105167 Marine and Petroleum Geology, v. 132. 0264-8172 http://hdl.handle.net/11449/228975 10.1016/j.marpetgeo.2021.105167 2-s2.0-85108019900 |
url |
http://dx.doi.org/10.1016/j.marpetgeo.2021.105167 http://hdl.handle.net/11449/228975 |
identifier_str_mv |
Marine and Petroleum Geology, v. 132. 0264-8172 10.1016/j.marpetgeo.2021.105167 2-s2.0-85108019900 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Marine and Petroleum Geology |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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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1808129380369563648 |