Geomorphologic studies in the Pouso Alegre (MG) region show four morphologic units related to tectonics lineaments revealing ancient structures (E-W and ENE-WSW).

Unit I - RANGE OF CERVO - it has trends of strike-slip faults related to Espírito Santo do Dourado (E-W) and Senador José Bento faults, with the drainage associated with these directions. Mounts, Mountains and low Mounts landform types are associated with this unit, showing aligned hanging valleys, steps in the river longitudinal profile and drainage captures.

Unit II - ELONGATED LANDFORMS SHARED BY CERVO, MANDU AND TURVO RIVER VALLEYS - limited at North by Jacutinga fault (E-W) and at South by Monte Siao fault (ENE-WSW). The Jacutinga fault produces negative breaks of slope along the Cervo River valley extension, with steps of scarps, showing surfaces inclined to NW. In those surfaces it is identified a meander scars belt associated with the tilting and with the Cervo River migration.

Unit III - LOW HILLS - limited at North by Monte Siao fault (ENE-WSW) and at Southeast by Camanducaia fault (NE-SW) it has a lowered convex hill relief and, on the other hand, no slope breaks associated with the thick colluvial material.

Unit IV - MOUNTS AND MOUNTAINS - it is characterized by an high block elongated in the NE-SW direction, limited at North by Monte Sião fault (ENE-WSW) and at Southeast by Senador Amaral fault (NE-SW). Along the last direction are associated spurs of the more important scarps, characterized by great valleys with an evident erosion (dissection) with discontinuous deposits and thin material. Triangular facets, hanging valleys filled by colluvium-alluvium material, dry valleys, valley asymmetry are associated with these characteristics revealing recent tectonic activities.