On The Origin Of Alveolar Disintegration At The Western Shores Of Gelibolu Peninsula

Abstract

Various specific disintegration types, characterized by alveolar disintegration, were observed in Cape Büyükkemikli, at the northern side of Suvla Bay and western side of Gelibolu Peninsula. Field observations and analytical data indicate that alveolar disintegration, which developed over Oligocene sandstones, is dominant at carbonate-cemented sandstones, with fine to medium texture and rich in biotite and plagioclase. Alveolisation ideally develops over the surfaces of sandstone layers, which are dipping towards the sea with an angle of 33- 40°. Furthermore, it is understood that disintegraton over sandstone is related to micropore and microfracture zones and supported by the biogenic origined formations along the intratidal zone. Salt disintegration is effective within the wave wash zone as a result of evaporation conditions during the periods of May-June. Besides, ellipsoidal disintegration cells and tafoni formations are abundant over frontal walls, which receive the impact of south sector winds with right angle. The edges of polygonal fracture zones, hardened by iron oxide infillings delimits alveolisation