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| Ávila,Ciro A.; Teixeira,Wilson; Cordani,Umberto G.; Barrueto,Héctor R.; Pereira,Ronaldo M.; Martins,Veridiana T.S.; Dunyi,Liu. |
| The Glória quartz-monzodiorite, one of the mafic plutons of the Paleoproterozoic Mineiro belt, is intrusive into banded gneisses, amphibolites, schists and phyllites of the Rio das Mortes greenstone belt, in the southern portion of the São Francisco Craton, State of Minas Gerais, Brazil. The Glória quartz-monzodiorite yields a SHRIMP U-Pb zircon age of 2188 ± 29 Ma, suggesting a tectonic relationship with the pre-collisional phase of the Mineiro belt. According to the Nd isotopic evidence (epsilonNd(T) = -3.4; T DM = 2.68 Ga) the original magmas was formed by a mixture among Archean crustal material and Paleoproterozoic juvenile magma. The Glória quartz-monzodiorite shows metaluminous and calc-alkaline tendency with intermediate K content, comparable to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glória quartz-monzodiorite; U-Pb SHRIMP; Sm-Nd isotopes; Mineiro belt; São Francisco Craton. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652006000300013 |
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