Sedimentological and Mineralogical Analysis of Seabed Sediments of Afantou Bay, Rhodes Island, Ne Greece
Marine and Coastal Resources SEDIMENTOLOGICAL AND MINERALOGICAL ANALYSIS OF SEABED SEDIMENTS OF AFANTOU BAY, RHODES ISLAND, NE GREECE. Tsoutsia Antonia1, Anastasatou Marianthi1, Petrakis Stylianos1, Stamatakis Giorgos2, Poulos Serafim1, Stamatakis Michael1, Kapsimalis Vasilis3, Roussakis Grigoris3 1 National and Kapodistrian University of Athens, Faculty of Geology and Geoenvironment, University Campus, Zografou, 15784, Athens, Greece 2 National and Kapodistrian University of Athens, Department of Chemistry, University Campus, Zografou, 15784, Athens, Greece 3 Hellenic Center for Marine Research, (HCMR), 46,7 km Athens Sounio ave., P.O. Box 712, P.C. 19013 Anavyssos, Attica, Greece Introduction The aim of the present research is the sedimentological and mineralogical study of the offshore deposits of Afantou Bay, Rhodes Island, Dodecanese, SE Aegean Sea, Greece, aspiring to the qualitative definition of a possible exploitable marine aggregates deposit, in the area bounded by the contours of ~15m (shallower boundary) and ~50m (deeper boundary). Methodology Twelve seabed sediments samples were collected from three profiles, running vertically to the coastline of Afantou [fig 1] by an HCMR scientific and technical group being onboard on the oceanographical ship ALKYON in late 2013. The samples were analyzed to identify their granulometry, density and mineralogy. Sedimentology The samples analyzed are granulometrically classified as: sand (S) (3 samples), gravelly sand ((g)S) (3 samples), slightly muddy sand ((g)mS) (5 samples), gravelly sand (gS) (1 sample), according to Folk 1973. In general, the samples trend to spatially distribute by the depth, specifically as the depth increases the grain-size of the sediment is finer. The granulometrical analysis shows that the sandy samples (S) occur at a depth between 10-20 meters, the gravelly sand samples at a depth between 20-30 meters, and the slightly muddy sandy samples between 30-40 meters depth.
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