Trezze San Pietro e Bardelli - Italy

The rocky outcrops known locally as trezze are characterized by substrates of various origins (clastic sedimentary, sedimentary sediments, organogenic) and with extensions ranging from a few to several hundred meters. The geological nature of the outcrops reveals that not all of them can be assimilated to bioconstructions, but there are also slabs deriving from the cementation of sand or rocks by methane gas. From recent investigations about 250 outcrops have been identified only in the Gulf of Trieste between Punta Sdobba and Punta Tagliamento; the most widespread range of these outcrops is on the seabed in front of the lagoons of Grado and Marano at a distance from the coastline of between 2 and 17 km, and a depth varying ...