Post-glacial (varanger) microbialites and associated structures in the Araras and basalt Alto Paraguai groups, southeastern Amazon craton, Brazil (late neoproterozoic-cambrian?) - Nogueira, Afonso César Rodrigues; Fairchild, Thomas R.; Riccomini, Claudio; Hidalgo, Renata Lourenço Lopes (Congreso Latinoamericano de Sedimentología, 2003)