The complexity of the geological development of the Earth's crust within the Mountain Crimea during the Jurassic and Cretaceous periods has been repeatedly noted in the geological literature. In the Belbek-Kachinsky interfluve, the Early Cretaceous history is quite clearly traceable to the end of the Valanginian; the geologic events of the end of the Early Cretaceous are less clearly delineated because of the incompleteness of the stratigraphic section ...