The relationships between charnockites and associated granitoids of Ribeira Belt: their ages and origins - Tassinari, Colombo Celso Gaeta; Munhá, José Manuel; Santos, Telmo M. Bento dos; Dias Neto, Coriolano de Marins e; Palacios, Teresa; Fonseca, Paulo Timóteo (Simpósio de Geologia de Minas Gerais, 2007)