GNGTS 2014 - Atti del 33° Convegno Nazionale

40 GNGTS 2014 S essione 1.1 A complex fault zone, about 4 meters wide, which is characterized by both synthetic and antithetic splays, has been defined in the trench walls. In the eastern wall, we have identified at least two fault-related colluvial wedges, matching units 4 and 10 in the trench-log reported in Fig. 3B. Fig. 3 – A) View of the fault zone exposed in the eastern trench wall during the excavation phases. B) Preliminary stratigraphic sketch of the fault zone exposed in the eastern wall of the San Demetrio trench. Levels 4 and 10 are can be considered as fault-related colluvial wedges. C) Detail of the western trench wall. Here a brown colluvium (unit 3 in Fig. 3B, where sample SD 61 was taken) is clearly involved in the deformation, together with the bottom of the overlaying gravelly layer (unit 2 in Fig. 3B).