Geological evolution of the basement rocks in the east-central part of the Rondônia Tin Province, SW Amazonian craton, Brazil: U-Pb and Sm-Nd isotopic constraints - Payolla, Bruno Leonelo; Bettencourt, Jorge Silva; Kozuch, Marianne; Leite Junior, Washington Barbosa; Fetter, Allen Hutcheson; Van Schmus, William Randall (Precambrian Research, 2002)