Abstract
The Ponta Grossa Arch (PGA) is the largest and most intriguing geological feature of the Paraná Basin. It is a regional lithospheric arching associated with deep geological faults with crustal or lithospheric scale, which are related to one of the most important dike swarm in the Earth (Strugale 2002). In addition, the PGA was very important in erosive shaping of the Paraná Basin, and is …