CHOUDHURI, A.IYER, S.S.VASCONCELLOS, M.B.A.2014-11-192014-11-192015-04-012014-11-192014-11-192015-04-01CHOUDHURI, A.; IYER, S.S.; VASCONCELLOS, M.B.A. U, Th and rare earth elements in Mesozoic tholeiite dykes from the Northern Guiana Shield. In: 2nd SIMPOSIO DE GEOLOGIA DA AMAZONIA, Apr, 1984, Manaus, AM, Brazil. DisponÃvel em: http://repositorio.ipen.br/handle/123456789/20856.http://repositorio.ipen.br/handle/123456789/20856openAccessneutron activation analysisrare earthsrocksthoriumuraniumU, Th and rare earth elements in Mesozoic tholeiite dykes from the Northern Guiana ShieldResumo de eventos cientÃficos