“…It contains a succession of siliciclastic and carbonated shallow-marine sediments and metasediments including pelites, siltstones, shales, argillites, sandstones, limestones, marls, dolomites, calcarenites, and basal conglomerates (DARDENNE, 1978;REIS et al, 2017). Six formations have been described in this group: Sete Lagoas, Serra de Santa Helena, Lagoa Formosa, Lagoa do Jacaré, Serra da Saudade, and Três Marias (COSTA; BRANCO, 1961;DARDENNE, 1978;FRAGOSO et al, 2011). At the centre of the undeformed cover, these formations have nearly flat-layered and less deformed sectors; on the western edge of the basin, adjacent to the craton-mobile belt tectonic boundary, emergent reverse faults and thrusts-and-fold terrains of the metamorphic belts affect nearby rocks (ALMEIDA, 1977; ALKMIM; MARTINS-NETO, 2001, 2012; REIS; ALKMIM, 2015).…”