Late neoproterozoic cap carbonate succession from southeastern Amazon craton, Brazil: snowball earth in south America - Nogueira, Afonso César Rodrigues; Riccomini, Claudio; Sial, Alcides Nobrega; Moura, Candido Augusto Veloso; Fairchild, Thomas R. (Congreso Latinoamericano de Sedimentología, 2003)