Mesoproterozoic bimodal magmatism in the southeastern part of Rondonia, SW Amazonian craton: 40 Ar/ 39 Ar geochronology and tectonic implications - Teixeira, Wilson; Bettencourt, Jorge Silva; Vasconcelos, Paulo Marcos; Rizzotto, Gilmar; Pacca, Igor Ivory Gil; D'Agrella Filho, Manoel Souza (South American Symposium on Isotope Geology, 2003)