G-06 The depositional coasts and cliffs that can be seen along the coastal belt of Zonguldak Coal Geopark are important geomorphological features. The shores of sedimentation are represented by the remnant bays of the old shores where sediment can accumulate despite the wave energy and a series of modern beaches formed there. It is a remarkable feature that the coastal forms are in the form of crescents facing north. The Kozlu part of these coasts was declared as an "Important Marine Area" by the Ministry of City and Environment in 1990 based on the presence of beautiful beaches, water resources and some bird nests.
 

The Cliffs are the dominant morphology covering about 70% of the area. It mostly consists of vertical or stepped cliffs of Paleozoic and Mesozoic rock outcrops. During the processes that were effective for millions of years, the Western Black Sea basin was opened by the southward progression of the plate piece between the West Cimmerian Fault and the West Black Sea Fault in the paleotectonic period, and in the neotectonic period, the basin underwent a compression regime with the uplift of the Pontites. Due to the northward movement of the African Plate, various tectonic fault lines have formed in the coastal and inner regions of the Black Sea, which is squeezed between the Eurasian Plate and the Anatolian Plate. While these structures are located parallel to the coasts as reverse faults and normal fault lines in the coastal regions, the compression effect has also caused the coasts to rise. The compression tectonic regime still continues to be effective as the cause of medium-sized earthquakes. According to the instrumental period data (between 1900 and April 2022), it is known that the earthquake activity with a magnitude of 3.5 and greater on the southern shelf of the Black Sea and in the coastal area adjacent to the geopark area is more especially on the coasts, and there are active fractures and faults under the sea floor in some regions. In the last 2,000 years, tsunami events that cause various degrees and losses have also been encountered on the Black Sea coasts. Some of them are related to earthquakes, and some of them are caused by large landslides on the ridges and slopes in the sea.