step known as Devonian Escarpament to the east and northeast of Ponta Grossa. Devonian sandstone rocks are the basis of the geological substrate: Furnas and Ponta Grossa, above are carboniferous sandstones of the Itararé Group. Each unit is intercepted by dikes and mesozoic sills as a consequence of the separation grooves of the South American and African Plate, where the breakage began. The sandstones of the Ponta Grossa and Furnas Formation are in the form of shales (when they touch disintegrate on leaf or layer forms) of siltstone or clay structure. It deposited as a result of the basalts of the Serra Geral Formation. The rivers and sediments flowing downstream from the mineral compound are responsible for Cenozoic deposition. It is famous the sandstone of the Vila Velha Park, an example of ruiniform relief. In geological terms the forms visualized are recent, originated during the gondwana megacontinente, where South America was linked to Africa, Oceania, Antarctica and India. In which the ruins lie in the Carboniferous period was a more southern latitude covered by glaciers. The landscape itself was formed after several burials and erosive processes. Different shapes can be found: flutes, dissolution cones, pointed tops, towers and pillars. Although the popular saying has long ago explained that Vila Velha was originated by the action of the wind, geological research however has been stating that it is the fruit of rainwater, action of the solar energy, changes in temperature and activity of living beings on the rock (in discontinuities and shear zone). Graben Graben of Ponta Grossa is a tectonic fossa with blocks slaughtered of the NE-SW direction (average values: 3 km wide and 10 km long), where the city is located in the greater part of the urban perimeter. Caused by the displacement of rocks, so that the whole block can descend. The spaces in vain are occupied by rocks of the fault, allowing that rocks of the Itararé Group and of the Ponta Grossa Formation, therefore of rocks of very different ages are at the same stratigraphic level. The geological unit of Furnas has a fractured and karstic aquifer where it has been receiving innumerable grants in the last decades for the installation of tubular wells due to water quality. The Itararé Group also has aquifer, although the lower quality is used because it is outcrop, since the Furnas normally be lower. The Ponta Grossa Formation has a