“…The main faults are listric, have normal dip slip, accumulate kilometric displacements, and produced a considerable crustal thinning on the axis of the basin. Furthermore, they branch into the basal detachment level at 13-15 km depth (Roca and Guimera, 1992;Roca, 1996;Sàbat et al, 1997;Vidal et al, 1997;Roca et al, 1999a;Vergés and Sàbat, 1999;Roca, 2001;Gaspar-Escribano et al, 2004). The extensional stress of the present stress field in eastern Iberia is approximately perpendicular to the strike of the major normal faults as has been the case since the start of the Neogene.…”