Bathyal ostracodes faunal changes as proxies to paleoceanographic research in the Santos Basin, Brazilian Southeast margini (2006)
- Authors:
- Autor USP: COSTA, KAREN BADARACO - IO
- Unidade: IO
- Subjects: OSTRACODA; GEOLOGIA HISTÓRICA
- Language: Português
- Abstract: Ostracodes are nowadays important proxies to Cenozoic oceanographic studies because their sensitivity to environmental parameters and suitability for geochemical analyses. The main objective of the present work has been to study the bathymetric distribution of Late Quaternary bathyal ostracodes from Santos Basin and assess the physico-chemical conditions that influenced it. The Santos basin lies on the southeast Brazilian margin in a region under influence of the Brazil Current. The 60 samples studied have been taken from three cores: SAN 26 (23°42'S/42°21,1' W; 384 m water depth), SAN 23 (23°49,5'S/42°17,8' W; 630 m water depth) and SAN 65 (24°03,3'S/41°54,9'W; 1130 m water depth). The whole assemblage of each core was studied both on its taxonomic and taphonomic aspects. The last glacial maximum (LGM), postglacial and Holocene were established according foraminifer Cibicidoides oxygen isotopic data from the deepest core (SAN 65). Additionally, Mg/Ca analysis on carapaces of genus Krithe, which has a good paleotemperature equation, and faunal turnovers recorded were also considered to propose those divisions. Geochemical analyses indicate that SAN 65 core section covers the marine isotopic stages (MIS) 1, 2 and 3 and that important hydrological changes took place, prompting noticeable ostracode faunal changes probably resulted from slope vertical migration. This study shows the goodresults given when multiproxies (oxygen isotopes, trace elements ratio andmicrofossils faunal) are used in paleoceanographic studies.
- Imprenta:
- Source:
- Título do periódico: resumos
- Conference titles: Simpósio Brasileiro de Oceanografia, 3
-
ABNT
BERGUE, Cristianini Trescastro e COSTA, Karen Badaraco e COIMBRA, João Carlos. Bathyal ostracodes faunal changes as proxies to paleoceanographic research in the Santos Basin, Brazilian Southeast margini. 2006, Anais.. São Paulo: Instituto Oceanográfico, Universidade de São Paulo, 2006. . Acesso em: 23 abr. 2024. -
APA
Bergue, C. T., Costa, K. B., & Coimbra, J. C. (2006). Bathyal ostracodes faunal changes as proxies to paleoceanographic research in the Santos Basin, Brazilian Southeast margini. In resumos. São Paulo: Instituto Oceanográfico, Universidade de São Paulo. -
NLM
Bergue CT, Costa KB, Coimbra JC. Bathyal ostracodes faunal changes as proxies to paleoceanographic research in the Santos Basin, Brazilian Southeast margini. resumos. 2006 ;[citado 2024 abr. 23 ] -
Vancouver
Bergue CT, Costa KB, Coimbra JC. Bathyal ostracodes faunal changes as proxies to paleoceanographic research in the Santos Basin, Brazilian Southeast margini. resumos. 2006 ;[citado 2024 abr. 23 ] - A Evolução da fotografia e seus usos na pesquisa Oceanográfica
- Palaeoenvironmental significance of allochthonous vs. autochthonous late quaternary ostracodes from imaruí lagoon and d'una river, southern Brazil
- Climatically induced changes in late Quaternary bathyal ostracod assemblages of the Camamu Basin, Brazil
- Variações isotópicas de carbono e oxigênio em algas calcárias (atol das rocas, atlântico sul equatorial) e sua utilização como indicadores paleoclimáticos
- Bathyal ostracode diversity in the Santos Basin, Brazilian southeast margin: response to late quaternary climate changes
- Contribution of carbon and oxygen isotopic analysis to the study of shellmounds in Cananeia region, São Paulo, Brazil
- Changes in monsoon precipitation since the last glacial maximum at the southeastern Brazilian continental margin
- Correlação entre o teor de carbonato e dois métodos distintos no estudo de nanofósseis calcários obtidos através da preparação de lâminas convencional e da decantação aleatória
- Morfometria de calcidiscus leptoporus(cocolitoforídeo,haptophyta) nos últimos 15.000 anos na Bacia de Santos, Brasil
- Evaluation of two genera of benthic foraminifera for down-core paleotemperature studies in the western south Atlantic
How to cite
A citação é gerada automaticamente e pode não estar totalmente de acordo com as normas
