Caracterização do Sedimentos de Fundo e Dinâmica Sedimentar da Enseada de Jurujuba (Baía de Guanabara), Niterói, RJ.

JOSÉ ANTONIO BAPTISTA NETO, MARIA AUGUSTA MARTINS DA SILVA

Resumo


Sixty-four bottom surface sediment samples were collected in Jurujuba Bight using a Dietz LaFond grab sampler. They were analysed for grain size distribution, shape, mineralogy and geochemistry. From the association between the Bight bottom morphology and sediment characteristics, it was possible to establish the sedimentary dynamics. This allowed a division of the Bight into three sedimentary zones: an outer, sand-dominated zone of relatively high wave and current energy, an inner zone characterized by very calm conditions and clay/mud deposition and an intermediary zone of mixed sedimentary characteristics.



Palavras-chave


sedimentos; dinâmica sedimentar; enseada de Jurujuba; Baía de Guanabara; RJ

Texto completo:

PDF/A


DOI: https://doi.org/10.22456/1807-9806.21221

Apontamentos

  • Não há apontamentos.







Instituto de Geociências, Universidade Federal do Rio Grande do Sul
Av. Bento Gonçalves, 9500 - Prédio 43113
91.540-000, Porto Alegre, RS, Brasil
E-mail: pesqgeoc@ufrgs.br