Tickyj, Hugo Electron microprobe dating of monazite substantiates ages of major geological events in the Brazilian shield - Oxford Elsevier Science June 2004 - pp. 699-713 ilus. ISSN: 0895-9811 Subjects--Topical Terms: DATACION U-PBGEOCRONOLOGIAMICROSONDA ELECTRONICAMONAZITA Subjects--Geographic Terms: BRASIL Subjects--Index Terms: CICLO BRASILIANO ESCUDO BRASILERO