Caspian Sea and a Pleistocene stage, that includes glaciation cycles and the creation of the present Volga River. During the first stage, the Tethys Sea had evolved into the Sarmatian Lake, that was created from the modern Black Sea and south Caspian, when the collision of the Arabian peninsula with Western Asia pushed up the Kopet Dag and Caucasus Mountains, setting definitive south and west boundaries to the Caspian basin. This orogeneic movement was continuous throughout the years, while Caspian was regularly disconnecting from the Black Sea. In the late Pontian, a mountain arch rose across the south basin and divided it
Black Sea 1570 map of Asia titled from Abraham Ortelius's labels the sea ("Great Sea", compare Latin ). English-language writers of the 18th century often used the name "Euxine Sea" ( or ) to refer to the Black Sea. Edward Gibbon, for instance, calls the sea by this name throughout "The History of the Decline and Fall of the Roman Empire". During the Ottoman Empire period, the Black Sea was called either or , both meaning "the Black Sea" in the Ottoman Turkish. In the tenth-century geography book , which was written in Persian by an unknown author, the Black Sea is