Chaudian Formation

The Chaudian Formation (Lower Pleistocene - beginning of the Middle Pleistocene) consists of the Gurian, Lower, and Upper Chaudian sequences. 

Upper Chaudian Formation, rare shells of Mediterranean mollusks (Cerasto-derma glaucum, Mytilus edulis, and others) were noted. 

Within the Azov-Black Sea Quaternary sediments, with respect to the combinations of the mollusk fauna, the following stratigraphic units are recognized the Chaudian, the Bakunian, the Old Euxinian, the Uzunlarian, the Karangatian, the Tarkhankutian, the New Euxinian, and the Black Sea formations. 

The Bakunian Formation (middle Middle Pleistocene) is represented by the deposits of the final stage of sedimentation in the Chaudian basin. They are reliably registered only on the Taman Peninsula [5,7], where they are represented by shallow-water deposits of a freshened basin. 

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