LA FAGLIA SABINA: DEFORMAZIONI TETTONICHE NELLE UNITA' QUATERNARIE TRA VACONE E MONTASOLA (LAZIO SETTENTRIONALE)

Abstract

Detailed geological mapping and geomorphological anal­ysis have been carried out in the area between Montasola and Vacone villages (Rieti, Central Italy). The main structural ele­ment outcropping in this area is the Sabina Fault, a Nl0°E right-lateral strike-slip fault. The Sabina Fault has been ac­tive since the late-Miocene to the Quaternary. Structural anal­ysis in the Lower Pleistocene transitional and marine deposits has revealed dextral strike-slip deformation. Geomorpholog­ical analysis has highlighted the vertical component of the movemeùt after the Middle-Upper Pleistocene as well. The new data point out the recent activity of the Sabina Fault and its role in the geological and geomorphological quaternary evolution.