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Morphology and OSL-based geochronology of the Holocene coastal dunes fields of Naxos Islands (Cyclades, Greece): preliminary results.

Citation:

Cordier S, Schluchter ML, Evelpidou N, Pavlopoulos K, Bouchet M, Frechen M. Morphology and OSL-based geochronology of the Holocene coastal dunes fields of Naxos Islands (Cyclades, Greece): preliminary results. In: XVIII INQUA Congress. Bern; 2011.

Date Presented:

20-27 July

Abstract:

Naxos is the largest island of the Cyclades (Aegean Sea, Greece), covering an area of ca 450 km². Its 150 km long coasts exhibits various morphological features such as cliffs, lagoons and beaches. These latter are largely preserved along the western coast, between the main city (Chora) and Pyrgaki, and are associated with well-developed dune fields. A few dunes fields are also preserved along the Eastern part (Azala Bay, Psili Ammos). Field study made it possible to propose an updated geomorphological mapping of the dune fields. Four landforms have hence been recognized, especially on the basis of their form, size, location and vegetation cover. Assuming that these various landforms relate to at least three Holocene aggradation periods, a geochronological approach was developed in order to unravel the climate influence on the Naxos dunes formation. 24 OSL dating were performed at the Leibniz Institute for Applied Geophysics (LIAG, Hannover, Germany) on samples from two main dune fields : Aliko (West coast) and Psili Ammos (East coast). We here present the first results and interpretations of these geochronological research.