Silt/clay fractionation in surficial Marmara sediments: implication for water movement and sediment transport paths in a semi-enclosed and two-layered flow system (northeastern Mediterranean Sea) |
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| Authors: | M Ergin M N Bodur |
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| Institution: | 1. Geological Research Center for Fluvial, Lacustrine and Marine Studies, Ankara University, Faculty of Science, Building F, B15, Tandogan, Ankara, 06100, Turkey
2. Faculty of Agriculture, Soil Department, Kahramanmaras Süt?üimam University, Kahramanmaras, Turkey
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| Abstract: | Silt and clay fractions and hydrographic data indicate that the silt/clay ratios depend on topographically controlled currents, water inflows, terrigenous input, and benthonic activities. The deep subbasins of the Marmara Trough with low-energy conditions show the lowest silt/clay ratios (0.2–0.4). The silt/clay ratios in the Çanakkale Strait (1.0–1.7) decrease markedly at the exit to the Aegean Sea (0.5–0.9) due to flow into a larger basin and the resultant lower current speed. Overall, under high-energy conditions the clay sediments cannot settle and are swept away, resulting in high silt/clay ratios. |
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