Il golfo di Arzachena nella Sardegna settentrionale. Ricerche di geomorfologia costiera e sottomarina

The coast and sea bottom of the Gulf of Arzachena were studied from the geomorphological point of view. Echographical surveys and under-water samplings were carried out at sea. Different morphologies connected both to hot-wet climates (inselberg, residual surfaces at different levels, paleosoils) and to cold climates with consequent emer­sion of the present continental shelf, are evident on the coast. On the internal shelf , the Ria of Arzachena presents typical characteristics of fluvial valleys. Various sea-levels, represented by abrasion plat­forms and beach-rocks, are referred to the Tyrrhenian and Versilian transgressions.