Coast bench

The Tarkhankut Peninsula features abrasive coasts composed of coquina-limestone rocks with high (20-40 m) cliffs, surf niches, and deepened bench. Numerous grottos, abrasive niches, and underwater rocks are attractive for submarine excursions and diving [2]. 

Coasts undergoing erosion display two basic elements of the coastal profile, namely, the cliff and the bench or platform. In any theoretical consideration of the evolution of a coastal profile, it is assumed that the coast is newly uplifted above sea level. After some time, a wave-cut notch may be excavated, and its formation intensifies marine erosion in this narrow zone. The development of a notch varies according to the nature of the rock in which excavation is proceeding, for example, it may be present if the sediments are unconsolidated or if the bedding planes dip seawards. Where a notch develops, it gives rise to a bench, and the material above is undermined and collapses to form a cliff face. 

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