Articles | Volume 17, issue 5
Research article
15 Sep 2021
Research article |  | 15 Sep 2021

Control of oceanic circulation on sediment distribution in the southwestern Atlantic margin (23 to 55° S)

Michel Michaelovitch de Mahiques, Roberto Violante, Paula Franco-Fraguas, Leticia Burone, Cesar Barbedo Rocha, Leonardo Ortega, Rosangela Felicio dos Santos, Bianca Sung Mi Kim, Rubens Cesar Lopes Figueira, and Marcia Caruso Bícego

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Cited articles

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Bassetto, M., Alkmim, F. F., Szatmari, P., and Mohriak, W. U.: The oceanic segment of the southern Brazilian margin: Morpho-structural domains and their tectonic significance, in: Atlantic Rifts and Continental Margins, edited by: Mohriak, W. and Taiwani, M., Geophysical Monograph Series, American Geophysical Union, 235–259, 2000. 
Bayon, G., Toucanne, S., Skonieczny, C., André, L., Bermell, S., Cheron, S., Dennielou, B., Etoubleau, J., Freslon, N., Gauchery, T., Germain, Y., Jorry, S. J., Ménot, G., Monin, L., Ponzevera, E., Rouget, M. L., Tachikawa, K., and Barrat, J. A.: Rare earth elements and neodymium isotopes in world river sediments revisited, Geochim. Cosmochim. Ac., 170, 17–38,, 2015. 
Short summary
In this work we used a concept called geochemical fingerprinting, with isotopes of neodymium and lead as tools to recognize the main sources and the physical processes responsible for the transport and deposition of sediments on a large area of the South Atlantic margin. Distinct sources, such as Antarctica, the Andean Cordillera, the Río de la Plata basin, and old rocks from the Brazilian shield, are identified.