EPISODIC UPLIFT DEDUCED FROM HOLOCENE SHORELINES IN THE PERACHORA PENINSULA, CORINTH AREA, GREECE

Four raised shorelines, between +1.1 m and +3.5 m, have been identifie d at two localities on the Perachora Peninsula and were dated by AMS C -14 to between 6400 and 1500 calibrated years ago. Uplift movements se em to have occurred in increments of 0.8 +/- 0.3 m, with a return peri od of about 1600 years. The last uplift coincided with a regional tect onic paroxysm, which has already been documented in several areas of t he eastern Mediterranean. The average uplift rate was probably faster during the Holocene than the average since the Last Interglacial perio d. No important vertical displacement occurred in this area at the tim e of (or after) the 1981 earthquake, but a new episode of coseismic up lift may be in preparation.