GNGTS 2016 - Atti del 35° Convegno Nazionale

GNGTS 2016 S essione 1.2 223 In the Early Middle Pleistocene an abrupt change of direction of extension (from NE-SW to NW-SE) in the ETM occurred. This change can be linked to the change of direction of the tectonic transport (from NE to SE) of the southern Apennines thrust belt (Patacca et al. , 1990). The extensional basins related to this stage correspond to underfilled half grabens of the Campania margin. During that time, NW-SE left lateral strike slip faults in the Apennines (Catalano et al. , 2004; Schiattarella et al. , 2005) and NW-SE transfer zones in the ETM were Fig. 2 – Kinematics of the Tyrrhenian backarc basin during Quaternary, modified after Milia et al. (2013) and Milia and Torrente (2015), including extension direction, volcanism, marine depocenters and uplift zones. Only the faults associated with each tectonic episode are shown. Upper plate and slab features developed during the evolution of the STEP fault, modified after Milia and Torrente (2015). Right panel: Simplified 2D cross sections illustrating our interpretation of the evolution of the Adria slab.