Inquadramento geologico del dominio vulcanico laziale

Il vulcanismo del Lazio, sviluppatosi a partire dalla fine del Pliocene, è parte della “Provincia vulcanica tosco-laziale”, impostatasi in una fascia strutturalmente depressa parallela alla costa tirrenica; l’area è compresa tra il settore più elevato della catena appenninica e le zone costiere, al margine del bacino tirrenico, caratterizzato da una crosta di tipo oceanico di età pliocenica. Le rocce vulcaniche della “Provincia tosco-laziale”, possono essere raggruppate in diverse serie comprendenti rocce da acide a intermedie e rocce potassiche.

The volcanic activity of Latium, which started during the late Pliocene, is part of Tuscany and Lazio Volcanic Province which has been grown in a structurally subsided band parallel to the Tyrrhenian coast; the area is located between the Apennine leliefs and the coastal areas, at the margin of the Tyrrhenian basin, characterized by an oceanic crust (Pliocene). The volcanic rocks of Tuscany and Latium province, can be grouped into several series. In the Latium region, the volcanic activity originated several volcanic districts with predominantly subaerial explosive activity, alternating with central and areal structures: the Vulsini Volcanic District , the Cimino-Vicano distict, the Sabatino Discrict, the Tolfetano-Cerite-Manziate District, and finally the The Colli Albani Volcano. Several authors, deduced information about these volcanic districts and the prevolcanic bedrock by means of the analysis of the outcrops in the past. Only in recent decades, thanks to geophysical methods, remote sensing and many deep borehole data, it was possible to obtain a clearer picture of deep geological setting of this sector.