Upper Campanian calcareous nannofossils from the Core 2-RSS-1, Pelotas Basin, Brazil
- Autores
- Guerra, R. M.; Tokutake, Lucio Riogi; Fauth, Gerson
- Año de publicación
- 2010
- Idioma
- inglés
- Tipo de recurso
- documento de conferencia
- Estado
- versión publicada
- Descripción
- The deep wells drilled in the Pelotas Basin, located in the southernmost of Brazil, represent a rare opportunity to understand the geological evolution of the region during the Cretaceous. The biostratigraphic framework proposed for the basin used outdated data, demanding new studies for its improvement. The calcareous nannofossils of the core 2-RSS-1 (depth interval 4480.35 - 4487.70 meters), drilled by Petrobras in the offshore portion of the basin are reported here. Thirty species were recognized, the most important of them are Arkhangelskiella cymbiformis Vekshina, Broinsonia parca constricta (Stradner) Hattner, Wind and Wise, Calculites obscurus (Deflandre) Prins and Sissingh, Eiffellithus turriseiffelii (Deflandre) Reinhardt, Microrhabdulus decoratus Deflandre, Micula decussata Vekshina, Reinhardtites levis Prins and Sissingh, Retecapsa crenulata (Bramlette and Martini) Grün, Tranolithus orionatus (Reinhardt) Reinhardt, and Uniplanarius sissinghii Perch-Nielsen. The co-occurrence of Broinsonia parca constricta and Reinhardtites levis indicates that the studied rocks are included in the Standard biozones CC22b to CC23a. According to the Cretaceous Standard zonation used in the present work, the studied interval is deposited close to the Upper Campanian boundary. The present and forthcoming studies will contribute to the improvement of the biostratigraphic scheme previously proposed for the Cretaceous of the Pelotas Basin.
Simposio VI: Microfósiles del Mesozoico y Cenozoico de América del Sur y Antártida. Nuevas aplicaciones y problemáticas asociadas
Facultad de Ciencias Naturales y Museo - Materia
-
Ciencias Naturales
Paleontología
Upper Campanian
Calcareous nannofossils
Core 2-RSS-1
Pelotas Basin, Brazil - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/16694
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Upper Campanian calcareous nannofossils from the Core 2-RSS-1, Pelotas Basin, BrazilGuerra, R. M.Tokutake, Lucio RiogiFauth, GersonCiencias NaturalesPaleontologíaUpper CampanianCalcareous nannofossilsCore 2-RSS-1Pelotas Basin, BrazilThe deep wells drilled in the Pelotas Basin, located in the southernmost of Brazil, represent a rare opportunity to understand the geological evolution of the region during the Cretaceous. The biostratigraphic framework proposed for the basin used outdated data, demanding new studies for its improvement. The calcareous nannofossils of the core 2-RSS-1 (depth interval 4480.35 - 4487.70 meters), drilled by Petrobras in the offshore portion of the basin are reported here. Thirty species were recognized, the most important of them are Arkhangelskiella cymbiformis Vekshina, Broinsonia parca constricta (Stradner) Hattner, Wind and Wise, Calculites obscurus (Deflandre) Prins and Sissingh, Eiffellithus turriseiffelii (Deflandre) Reinhardt, Microrhabdulus decoratus Deflandre, Micula decussata Vekshina, Reinhardtites levis Prins and Sissingh, Retecapsa crenulata (Bramlette and Martini) Grün, Tranolithus orionatus (Reinhardt) Reinhardt, and Uniplanarius sissinghii Perch-Nielsen. The co-occurrence of Broinsonia parca constricta and Reinhardtites levis indicates that the studied rocks are included in the Standard biozones CC22b to CC23a. According to the Cretaceous Standard zonation used in the present work, the studied interval is deposited close to the Upper Campanian boundary. The present and forthcoming studies will contribute to the improvement of the biostratigraphic scheme previously proposed for the Cretaceous of the Pelotas Basin.Simposio VI: Microfósiles del Mesozoico y Cenozoico de América del Sur y Antártida. Nuevas aplicaciones y problemáticas asociadasFacultad de Ciencias Naturales y Museo2010info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionResumenhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/16694enginfo:eu-repo/semantics/altIdentifier/isbn/978-987-95849-7-2info:eu-repo/semantics/reference/hdl/10915/25738info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T10:52:58Zoai:sedici.unlp.edu.ar:10915/16694Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 10:52:59.124SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Upper Campanian calcareous nannofossils from the Core 2-RSS-1, Pelotas Basin, Brazil |
title |
Upper Campanian calcareous nannofossils from the Core 2-RSS-1, Pelotas Basin, Brazil |
spellingShingle |
Upper Campanian calcareous nannofossils from the Core 2-RSS-1, Pelotas Basin, Brazil Guerra, R. M. Ciencias Naturales Paleontología Upper Campanian Calcareous nannofossils Core 2-RSS-1 Pelotas Basin, Brazil |
title_short |
Upper Campanian calcareous nannofossils from the Core 2-RSS-1, Pelotas Basin, Brazil |
title_full |
Upper Campanian calcareous nannofossils from the Core 2-RSS-1, Pelotas Basin, Brazil |
title_fullStr |
Upper Campanian calcareous nannofossils from the Core 2-RSS-1, Pelotas Basin, Brazil |
title_full_unstemmed |
Upper Campanian calcareous nannofossils from the Core 2-RSS-1, Pelotas Basin, Brazil |
title_sort |
Upper Campanian calcareous nannofossils from the Core 2-RSS-1, Pelotas Basin, Brazil |
dc.creator.none.fl_str_mv |
Guerra, R. M. Tokutake, Lucio Riogi Fauth, Gerson |
author |
Guerra, R. M. |
author_facet |
Guerra, R. M. Tokutake, Lucio Riogi Fauth, Gerson |
author_role |
author |
author2 |
Tokutake, Lucio Riogi Fauth, Gerson |
author2_role |
author author |
dc.subject.none.fl_str_mv |
Ciencias Naturales Paleontología Upper Campanian Calcareous nannofossils Core 2-RSS-1 Pelotas Basin, Brazil |
topic |
Ciencias Naturales Paleontología Upper Campanian Calcareous nannofossils Core 2-RSS-1 Pelotas Basin, Brazil |
dc.description.none.fl_txt_mv |
The deep wells drilled in the Pelotas Basin, located in the southernmost of Brazil, represent a rare opportunity to understand the geological evolution of the region during the Cretaceous. The biostratigraphic framework proposed for the basin used outdated data, demanding new studies for its improvement. The calcareous nannofossils of the core 2-RSS-1 (depth interval 4480.35 - 4487.70 meters), drilled by Petrobras in the offshore portion of the basin are reported here. Thirty species were recognized, the most important of them are Arkhangelskiella cymbiformis Vekshina, Broinsonia parca constricta (Stradner) Hattner, Wind and Wise, Calculites obscurus (Deflandre) Prins and Sissingh, Eiffellithus turriseiffelii (Deflandre) Reinhardt, Microrhabdulus decoratus Deflandre, Micula decussata Vekshina, Reinhardtites levis Prins and Sissingh, Retecapsa crenulata (Bramlette and Martini) Grün, Tranolithus orionatus (Reinhardt) Reinhardt, and Uniplanarius sissinghii Perch-Nielsen. The co-occurrence of Broinsonia parca constricta and Reinhardtites levis indicates that the studied rocks are included in the Standard biozones CC22b to CC23a. According to the Cretaceous Standard zonation used in the present work, the studied interval is deposited close to the Upper Campanian boundary. The present and forthcoming studies will contribute to the improvement of the biostratigraphic scheme previously proposed for the Cretaceous of the Pelotas Basin. Simposio VI: Microfósiles del Mesozoico y Cenozoico de América del Sur y Antártida. Nuevas aplicaciones y problemáticas asociadas Facultad de Ciencias Naturales y Museo |
description |
The deep wells drilled in the Pelotas Basin, located in the southernmost of Brazil, represent a rare opportunity to understand the geological evolution of the region during the Cretaceous. The biostratigraphic framework proposed for the basin used outdated data, demanding new studies for its improvement. The calcareous nannofossils of the core 2-RSS-1 (depth interval 4480.35 - 4487.70 meters), drilled by Petrobras in the offshore portion of the basin are reported here. Thirty species were recognized, the most important of them are Arkhangelskiella cymbiformis Vekshina, Broinsonia parca constricta (Stradner) Hattner, Wind and Wise, Calculites obscurus (Deflandre) Prins and Sissingh, Eiffellithus turriseiffelii (Deflandre) Reinhardt, Microrhabdulus decoratus Deflandre, Micula decussata Vekshina, Reinhardtites levis Prins and Sissingh, Retecapsa crenulata (Bramlette and Martini) Grün, Tranolithus orionatus (Reinhardt) Reinhardt, and Uniplanarius sissinghii Perch-Nielsen. The co-occurrence of Broinsonia parca constricta and Reinhardtites levis indicates that the studied rocks are included in the Standard biozones CC22b to CC23a. According to the Cretaceous Standard zonation used in the present work, the studied interval is deposited close to the Upper Campanian boundary. The present and forthcoming studies will contribute to the improvement of the biostratigraphic scheme previously proposed for the Cretaceous of the Pelotas Basin. |
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2010 |
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2010 |
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