NORTHEAST GUANABARA BAY AND COASTAL PLAIN HOLOCENE SEDIMENTARY EVOLUTION (BRAZIL): A CONTRIBUTION

Autores/as

  • Rodrigo Coutinho Abuchacra Departamento de Geologia e Geofísica, Universidade Federal Fluminense, Av. Gal. Milton Tavares de Souza, s/n, Niterói, 24210-346, Rio de Janeiro
  • Kita Chaves Damasio Macario Departamento de Física, Universidade Federal Fluminense, Av. Gal. Milton Tavares de Souza, s/n, Niterói, 24210-346, Rio de Janeiro
  • Maria Isabela Nascimento de Oliveira Departamento de Física, Universidade Federal Fluminense, Av. Gal. Milton Tavares de Souza, s/n, Niterói, 24210-346, Rio de Janeiro
  • Paula Ferreira Falheiro Abuchacra Departamento de Geografia, Universidade Federal Fluminense, Av. Gal. Milton Tavares de Souza, s/n, Niterói, 24210-346, Rio de Janeiro
  • Guilherme Borges Fernandez Departamento de Geografia, Universidade Federal Fluminense, Av. Gal. Milton Tavares de Souza, s/n, Niterói, 24210-346, Rio de Janeiro, Brazil
  • Sérgio Cadena de Vasconcelos Departamento de Geografia e Meio Ambiente, Pontifícia Universidade Católica do Rio de Janeiro, Rua Marquês de São Vicente, 225, Gávea - Rio de Janeiro, Rio de Janeiro
  • Vitor Calôr de Oliveira Departamento de Geografia, Universidade Federal Fluminense, Av. Gal. Milton Tavares de Souza, s/n, Niterói, 24210-346, Rio de Janeiro
  • Yuri Nogueira Ressiguier Departamento de Geografia, Universidade Federal Fluminense, Av. Gal. Milton Tavares de Souza, s/n, Niterói, 24210-346, Rio de Janeiro
  • Alberto Garcia de Figueiredo Jr. Departamento de Geologia e Geofísica, Universidade Federal Fluminense, Av. Gal. Milton Tavares de Souza, s/n, Niterói, 24210-346, Rio de Janeiro

DOI:

https://doi.org/10.12957/jse.2017.27951

Palabras clave:

Guanabara Bay. Sediment Accumulation. Marine Transgression and Regression

Resumen

Sedimentological and radiocarbon investigations are part of an ongoing research on the Bay-head delta of northeast Guanabara Bay, Rio de Janeiro State. Sediment accumulation indicates that the Holocene infill of the bay-head delta started around 8.2 kyr BP and was not in pace with the eustatic sea-level rise. Sediment accumulation was faster during the transgressive phase (0.56 cm.yr-1). However, during the regressive phase, progradation driven by base-level fall was predominant over vertical sediment accumulation (0.02 cm.yr-1). Based on coring, three sedimentary units were defined: fluvial sands (U1), estuarine deposits (U2) and fluvial mud (U3).

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Publicado

2017-03-12

Número

Vol 2, nº1, January- March, 2017

Sección

Research article

Licencia

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Journal of Sedimentary Environments (JSE) is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 4.0 International License.