Istituto Magistrale "Don G. Pagani " C A R L O FO R T E (C A)
S. Pietro island is the result of tectonic and volcanic phenomena which have occurred in the mediterranean dock since the beginning of the tertiary period, culminating in the formation of the volcanic platform named Sulcitana. This is totally made up of volcanic rocks, represented by liparite, liparitic tufa and comendite. The toufaceouses can be about a hundred metres thick. This oligocenyc volcanic construction is the result of the superimposition of many layers of trachytic and andesitic lava. A fossil geyser is a characteristic feature in the area called "Lucchese".