Preprints
https://doi.org/10.5194/se-2018-140
https://doi.org/10.5194/se-2018-140
13 Feb 2019
 | 13 Feb 2019
Status: this preprint was under review for the journal SE. A final paper is not foreseen.

The building, shaping, and filling of an Upper Slope Terrace: the Rio Grande Terrace, SW Atlantic

Michel Michaelovitch de Mahiques, Javier Alcántara-Carrió, Francisco José Lobo, Uri Schattner, Rosangela Felício dos Santos, Samara Cazzoli y Goya, Raissa Basti Ramos, José Gustavo Natorf de Abreu, Luiz Antonio Pereira de Souza, Rubens Cesar Lopes Figueira, and Marcia Caruso Bícego

Abstract. In this work, we analyze the origin, evolution, and recent sedimentation of the Rio Grande Terrace (RGT), the most prominent upper slope terrace of the SW Atlantic. We gathered data from deep to shallow seismic, echo-sounding and surface sediments in order to recognize the role played by the geological inheritance, the sediment origin, and the present hydrodynamics, this last one defined by the action of the high speeds of the Brazil Current.

The RGT is here interpreted as a unique geomorphological feature, which was developed over a pre-Aptian basement high. It presents a complex modern morphology, given by the erosional action of the Brazil Current and its present surface sediments show a high complexity in terms of origin and grain size.

This preprint has been withdrawn.

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Michel Michaelovitch de Mahiques, Javier Alcántara-Carrió, Francisco José Lobo, Uri Schattner, Rosangela Felício dos Santos, Samara Cazzoli y Goya, Raissa Basti Ramos, José Gustavo Natorf de Abreu, Luiz Antonio Pereira de Souza, Rubens Cesar Lopes Figueira, and Marcia Caruso Bícego

Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
Michel Michaelovitch de Mahiques, Javier Alcántara-Carrió, Francisco José Lobo, Uri Schattner, Rosangela Felício dos Santos, Samara Cazzoli y Goya, Raissa Basti Ramos, José Gustavo Natorf de Abreu, Luiz Antonio Pereira de Souza, Rubens Cesar Lopes Figueira, and Marcia Caruso Bícego
Michel Michaelovitch de Mahiques, Javier Alcántara-Carrió, Francisco José Lobo, Uri Schattner, Rosangela Felício dos Santos, Samara Cazzoli y Goya, Raissa Basti Ramos, José Gustavo Natorf de Abreu, Luiz Antonio Pereira de Souza, Rubens Cesar Lopes Figueira, and Marcia Caruso Bícego

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Latest update: 26 May 2024
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Short summary
This paper is a contribution to the knowledge of the geological processes on the SW Atlantic. We tried to integrate data from different time-scales, such as the geological evolution (millions of years) to the hydrodynamic processes (days to years). The results allowed us to recognize the importance of the geological inheritance to the present morphology of submerged areas.