Researches in the granulitic region of southern Bahia, with ages from Archean to lower Proterozoic, have shown a progressive regional metamorphism with a peak of 830°C and 6 kbars. It caused a uniform reequilibration in the granulite facies of intrusives and supracrustals rocks of the NW and SE Domains of the Region. In the Central Domain, rocks of the amphibolite, remained essentially unaffected. Where the liquidus pressure was compatible migmatization in the granulite and amphibolite facies has occured. The temperature decrease during late deformation stages/phases, related to the uplift of this deep crustal segment, caused the a appearence of retrograde assembly in the granulite, amphibolite and greenschist facies.
