| Texto completo | |
| Autor(es): |
Ramos, Raissa Basti
[1]
;
dos Santos, Rosangela Felicio
[1]
;
Schattner, Uri
[2]
;
Figueira, Rubens Cesar Lopes
[1]
;
Bicego, Marcia Caruso
[1]
;
Lobo, Francisco Jose
[3]
;
de Mahiques, Michel Michaelovitch
[1, 4]
Número total de Autores: 7
|
| Afiliação do(s) autor(es): | [1] Univ Sao Paulo, Oceanog Inst, Praca Oceanog 191, BR-05508120 Sao Paulo, SP - Brazil
[2] Univ Haifa, Leon H Charney Sch Marine Sci, Dr Moses Straus Dept Marine Geosci, Haifa - Israel
[3] CSIC, Inst Andaluz Ciencias Tierra, Armilla - Spain
[4] Univ Sao Paulo, Inst Energy & Environm, Sao Paulo - Brazil
Número total de Afiliações: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | GEO-MARINE LETTERS; v. 40, n. 6, SI, p. 989-999, DEC 2020. |
| Citações Web of Science: | 1 |
| Resumo | |
This study examines the role of deep pockmarks in acting as natural sediment traps. Multibeam bathymetry, single-channel seismic and sediment samples data were used for describing the morphology of pockmarks as well as the nature of sediments inside and outside these depressed features, in an area of Santos Basin (SW Atlantic upper slope), dominated by the strong flow of Brazil Current. Results show that the grain size and chemical composition of sediments inside pockmarks are distinct from the outside. Also, radiocarbon dating shows that Holocene ages are found only in samples located inside the pockmarks. Combination of sedimentological, geochemical and geochronological data allowed to recognise that deep pockmarks might present distinct sediment deposition processes when compared with those of shallow pockmarks, in which turbulence impedes sediment deposition, as reported in the literature. (AU) | |
| Processo FAPESP: | 14/08266-2 - Feições morfológicas do talude continental da margem Sudeste do Brasil: tectônica ativa versus condições oceanográficas modernas |
| Beneficiário: | Michel Michaelovitch de Mahiques |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 15/17763-2 - Mudbelts do Sul e Sudeste do Brasil: implicações sobre as influências antrópicas no ambiente marinho |
| Beneficiário: | Márcia Caruso Bícego |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 17/50191-8 - Dymamics of salt dome exhumation on the ocean floor, focusing on Santos basin offshore Brazil |
| Beneficiário: | Michel Michaelovitch de Mahiques |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |