Contribuição à geologia da região de frades, município de Teresópolis (Rio de Janeiro)

João Baptista Filho, Benedito Souza Gomes, Francisco José da Silva


A geological mapping at the scale 1:50,000 based on air photographs at the scale 1:20.000 is being held near Frades, a small village between Teresopolis and Nova Friburgo, State of Rio de Janeiro, Brazil. The main rock types are a coarse grained gneiss, migmatites and granites. The pigmatites exibits a dark differentiate (melanosome), sometimes widespread in area, which has been mapped as amphibolite sensu strictu. The latter, until now considered of magmatic origin, seems to have formed through migmatization processes.



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ISSN 0101-9759 e-ISSN 1982-3908