engleski

Impact of cliff erosion on marine sediment composition - indication of local coastline evolution (Vrgada Island, Croatia)

Surface sediment along the carbonate-bordered eastern Adriatic is highly carbonaceous material, composed largely of biogenic skeletal material. Local outcrops of soft-rock material such as Eocene flysch and Pleistocene sandstones may locally change the composition of the surface sediment cover. Highly erosive coastal cliff developed in Pleistocene sediments on the Vrgada Island gave rise to the idea that local seabed surface sediment may reflect the composition of the cliff sediment. Preliminary results of sedimentological analyses showed that sediment samples collected on both sides of the cliff contain material eroded mostly from the eastern side of the cliff. Subsequent longshore drift caused by dominant waves likely sort fallen material, transporting its finer fractions to the northern side and further into the sea.

carbonate sediment ; Pleistocene sediment ; soft-rock erosive cliff

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