The presence of fluids in the sediments of the Gulf of Trieste (Northern Adriatic) produces surface occurrences that have been identified by high resolution seismic data. In particular, south-west of Grado, six sites have been pinpointed with evidence of accumulation of fluids within the sediment, dispersion of fluids in the water column, and presence on the sea bottom of rocky outcrops whose genesis is assumed to be linked to the precipitation of calcium carbonate methane-derived.
