Il bacino delle Acque Albule, sinkholes e assetto geologico-strutturale

Abstract

Systematic analyses of the tectonic structures of the Plio-Pleistocene units and MesoCenozoic deposits of the Acque Albule Basin, 1Okm East of Rome between Mount Soratte, Cornicolani Mts. and Lucretili Mts. in central Italy, show a complex tectonic framework. A gravity survey was carried out to identify the geological and structural features of the basin. Gravity anomalies have been used for the construction of a 3D model of the area, and gravity data for the construction of Bouguer and residual anomaly maps. These data, together with geological surface data, allowed for the understanding of the Plio-quaternary tectonic setting of the basin. The trend of anomalies, around the two relative gravity lows. Here, two relative gravity lows are separated by a wide saddle, located near the Casale Battisti (Guidonia). This plain are characterized by the presence of some collapse phenomena of different types and/or origins. The majority of these collapses are aligned along regional master and seismogenetic faults. Over the last 1O years several collapse phenomena risk area have been detected by micro- gravity survey in Acque Albule plain areas. In this paper only Lago delle Tartare is considered. Both microgravity and seismic tomography data have been proposed in order to better under- stand the underground geological features of the morphological depression.