Chemostratigraphic correlation of the neoproterozoic sequences from south america - Misi, Aroldo; Teixeira, J. B. G.; Gaucher, Claudio; Remus, Marcus Vinicius Dorneles; Boggiani, Paulo César; Iyer, Sundaram Sankara Subba (South American Symposium on Isotope Geology, 2003)