Fig. 3

Interpretative tectonic scheme of the study area. The main tectonic units (see text for description) were identified on the base of mesostructural and stratigraphic analyses. Fault attitude and kinematics are described in the correlated stereographic projections (equal area, lower hemisphere). The trace of the Riso-Parina tunnel cross-cutting the GVTZ at depth is also indicated. The location of the field photos of Fig. 6 is given by arrows