2015-03-202015-03-202008-06CHAVES, César Lisboa; GORAYEB, Paulo Sergio de Sousa; MOURA, Candido Augusto Veloso. Geologia, geocronologia e litoquímica dos granitos paleoproterozóicos do tipo A no setor setentrional da Província Tocantins. Revista Brasileira de Geociências, São Paulo, v. 38, n. 2, p. 366-378, jun. 2008. Disponível em: <http://ppegeo.igc.usp.br/pdf/rbg/v38n2/v38n2a12.pdf>. Acesso em: 19 mar. 2015.0375-7536https://repositorio.ufpa.br/handle/2011/6454This work presents the geologic characterization of the Ipueiras Intrusive Suite, which comprises four granitic plutons, named do Carmo, Areias, Ipueiras and Itália, located in Goiás Massif, northern sector of the Tocantins Province. New petrographic, litogeochemical, geocronological and isotopic data had allowed to discriminate these plutons of other granites of the region. Lithochemical data showed that they are peraluminous subalkaline granites, with A-type affinity. Single zircon Pb-evaporation data indicate an age of 2,08 Ga for this magmatism. Sm-Nd (TDM) ages between 2,15 and 2,19 Ga, and positive εNd(2,08 Ga) values (+2,5 to +2,9) for the Areias and Ipueiras granites suggest an origin involving juvenile mantle components. This granitogenesis may be related to the last magmatic pulses of the Transamazonian thermotectonic event, well defined in the region.porAcesso AbertoGeocronologiaPaleoproterozóicoSuíte Intrusiva IpueirasGranito Tipo APorto Nacional - TOTocantins - EstadoAmazônia brasileiraArtigo de Periódico