Geology, goechemistry and geochronology (Rb-Sr, U-Pb, Sm-Nd and Ar-Ar) of the orthogneisses from the Alto Pajéu terrane - Brito Neves, Benjamim Bley de; Guimarães, Ignez de Pinho; Santos, Edilton José dos; Van Schmus, William Randall; Campos Neto, Mario da Costa (South American Symposium on Isotope Geology, 2003)