Abstract
The study area is located in the state of Minas Gerais, Brazil, among the municipalities of Pedro Leopoldo, Matozinhos, and Sete Lagoas, with Velhas River as the eastern boundary. It is located in the São Francisco Craton, where carbonated argillo-arenaceous sediments are emplaced giving origin to the Bambuí Group, in the São Francisco Basin. Despite the geological knowledge previously developed, the region needs work on integration and detailing of such information. For this reason, the main objective was to contribute to the quality of the geologic cartography, the spatial distribution, and the structural framework geometry. Thus, geologic mapping, aerial photography interpretation, and evaluation of 270 lithologic well profiles were carried out. It was possible to establish a new geologic perspective of the region by obtaining the detailed geologic map of the municipality of Sete Lagoas, 14 geologic cross sections, and a geologic conceptual model. The study showed that the area is within a basin border, presenting a geometry conditioned by horst and graben system controlled by faulting. This structural feature displaced stratigraphic sequences positioning them side by side with lithologic sequences with different ages.
Highlights
The study area is located in the state of Minas Gerais, Brazil, among the municipalities of Pedro Leopoldo, Matozinhos, and Sete Lagoas, with Velhas River as the eastern boundary (Fig. 1)
Geologic mapping, and the evaluation of 270 lithological well profiles located in Sete Lagoas and in the adjacent municipalities were integrated with the available data to provide a new geologic perspective of the region
The study area is along basement border, a result of extensional events in the São Francisco Craton, where silicate-carbonate sediments from the Neoproterozoic age were emplaced giving origin to the Bambuí Group
Summary
The study area is located in the state of Minas Gerais, Brazil, among the municipalities of Pedro Leopoldo, Matozinhos, and Sete Lagoas, with Velhas River as the eastern boundary (Fig. 1). This area is located in the São Francisco Craton, where carbonated argillo-arenaceous sediments are emplaced giving origin to the Bambuí Group, The previous studies about the Bambuí Group were carried out by Branco and Costa (1961), PAULO GALVÃO, RICARDO HIRATA, ARNALDO CORDEIRO, DANIELA BARBATI and JORGE PEÑARANDA who proposed the first stratigraphic column of the region, later modified by Oliveira (1967), Schöll and Fogaça (1979), Dardenne (1978) and, by Ribeiro et al (2003). The update to the geologic map of the municipality of Sete Lagoas, 14 geologic cross sections, and a geologic conceptual model were created
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