Abstract
The transition between the Proterozoic and Fanerozoic eons is characterized by at least three major glacial events (Sturtian, Marinoan and Gaskiers), succeeded by a world wide carbonate sedimentation. The Bambuí Group (especially the Sete Lagoas Formation) has been the object of several sedimentological, geochronological and isotopical studies in the last decades, being associated with St…