Re-Os age constraints and new observations of Proterozoic glacial deposits in the Vazante Group, Brazil - N.J. Geboy; A.J. Kaufman; R.J. Walker; A. Misi; T.F. de Oliviera; K.E. Miller; K. Azmy; B. Kendall; S.W. Poulton (Precambrian Research, 2013)