Abstract

We propose two deformational events. The first, an early contractional event whose contraction directions varies from E-W to NE-SW near to Permian basement blocks, whose structural architecture is controlling the NW-SE and E-NE strike slips faults generated on the second event and the orientation of folds and faults developed during the first one. A Strike-Slip deformation is observed by faults that cut Miocene-Pliocene volcanic units and the previous contractional system. Because the reverses faults and folds are affecting the Oligocene Miocene rocks, the early contractional event documented in our kinematic analysis was active at least until the lower to mid Miocene times. The late deformational event is represented by the strike slip deformation that was active until recent times, defining in this way the temporality of deformation in Frontal Cordillera, in the transition with the Puna Plateau.