A suíte metatholeiítica da seqüência metavulcanossedimentar Rio Manso, Quadrilátero Ferrífero (MG)

the rio manso metavolcanosedimentary sequence comprises metaultramafic rocks with intercalations of metamafic and psammo-pelitic metasedimentary rocks located in the geologic domain of the iron quadrangle in minas gerais, southern s？o francisco craton. the litho-structural mapping (1:10,000), as well as petrographic, mineralogical and lithogeochemical studies allowed the identification of a metatholeiitic suite in the range of this sequence. when compared to other world sequences in terms of geochemistry, the rio manso metavolcanosedimentary sequence is similar to the mesoarchean barbeton sequence. this similarity suggests that the studied sequence corresponds to a granite-greenstone terrain which may represent the northeastern extension of the mesoarchean campo belo metamorphic complex.