SHRIMP-RG U-Pb zircon geochronology of high-grade paragneisses from NE Rondonia, SW Amazonian craton, Brazil: constraints on provenance and metamorphism - Payolla, Bruno Leonelo; Bettencourt, Jorge Silva; Tosdal, R. M.; Wooden, J. L.; Leite Junior, Washington Barbosa (South American Symposium on Isotope Geology, 2003)