Mg-Calcites and dolomite in the Brejo do Espinho lagoon, Rio de Janeiro.

A.P.A. Anjos (1) , Abdelfettah Sifeddine (2) , S.R. Pachineelam (1) , Christian Défarge (3) , Bruno Turcq (1, 2)

1 DEPARTAMENTO DE GEOQUIMICA - Departamento de Geoquimica Universidade Federal Fluminense, Morro do Valonguinho
2 PALEOTROPIQUE - Paléo-environnements tropicaux et variabilité climatique
3 ISTO - Institut des Sciences de la Terre d'Orléans

The aim of this research is to study the carbonate sedimentation in a hypersaline coastal (Brejo do Espinho) where dolomite precipitation can be expected. The study allowed to make a general characterization of the sediment and to identify different types of carbonate minerals by mineralogical studies and cryo-scanning electron-microscopy.

Domains: Geochemistry

A.P.A. Anjos, Abdelfettah Sifeddine, S.R. Pachineelam, Christian Défarge, Bruno Turcq. Mg-Calcites and dolomite in the Brejo do Espinho lagoon, Rio de Janeiro.. 3rd Latin American Congr. Sedimentology, 2003, Belém, Brazil. ⟨hal-00089101⟩