Sediment dispersal and accumulation pattern in the Western Black Sea – a geological model

The change in the type and rate of sedimentation is of meridian trend. The biogenic sediments (IumashelIs) on the shelf to the south of Kaliakra Cape are replaced by terrigenous ones. The deep water sediments in the northern part of the depression are represented by coccolithic carbonate oozes. The quantity and the grain-size of the terrigenous component in them increases to the south and they are replaced by terrigenous lithofacies. Two big areas of avalanche sedimentation are developed. The first one is located along the wide Western shelf and is connected with material's discharge from the Rumellian current. The second area is in the southern deep water part of the depression. It is supplied by the Anatolian coast (by solid discharge of the River Sakarya mainly) and is subjected to considerable influence of the turbidy currents.