The neoproterozoic carbonate sequences of south america: evolution and chemostratigraphic correlation - Misi, Aroldo; Teixeira, João Batista; Gaucher, Claudio; Sanches, Andreia Lima; Remus, Marcus Vinicius Dorneles; Boggiani, Paulo César; Iyer, Sundaram Sankara Subba (International Geological Congress, 2004)