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 and Caspian Squadron Black Sea and Caspian Squadron The Black Sea and Caspian Squadron also known as the Black Sea and Marmora Force and the Black Sea and Marmora Division was naval formation of the British Mediterranean Fleet from 1918 to 1919. On 19 December 1918 the Commander-in-Chief, Mediterranean Fleet instructed Rear-Admiral Michael Culme-Seymour then commanding British Aegean Squadron that he was to be re-assigned to a new command appointment. On 1 January he transferred his current command to Commodore Maurice Fitzmaurice and assumed authority for the Black Sea, Caspian Sea, Sea of Azov and Sea of Marmora.. The squadron was involved in