SIVIRIS FORMATION (UPPER OLIGOCENE - LOWER MIOCENE), A NEW LITHOSTRATIGRAPHIC UNIT, KASSANDRAS PENINSULA (CHALKIDIKI, NORTHERN GREECE)

Upper Oligocene - Lower Miocene marine sediments are found and proven for the first time in Chalkidiki Peninsula. They are designated as Siviris For- mation and are dated by their calcareous nannofossil content.