the bosporus is the strait between the black sea and the sea of marmara.
what is the strait between the black sea and the sea of marmara?
the bosporus
in addition to the early holocene "noah’s flood" scenario proposed by william ryan, walter pitman and their colleagues and the caspian sea overflow scenario proposed by andrei l. chepalyga, the non-catastrophic progressive flood model (or gradual inflow model) has been proposed to explain the late quaternary sea level history of the black sea. for the progressive flood model, it is argued that as early as 11,000 or 10,000 bp, the level of the black sea rose above the shallowest sill depth of about in the bosporus strait and spilled into the marmara sea. at least for the first 1,000 years, this connection was a one-way outflow of the black sea into a very shallow marmara sea. at about 8,000 bp, the level of the marmara sea rose high enough such that a two-way flow started. the evidence used to support this scenario includes the disparate ages of sapropel deposition in the eastern mediterranean sea and black sea; buried backstepping barrier islands observed on the black sea shelf; and a sub-aqueous delta composed of black sea sediments in the marmara sea near the bosporus strait.
black sea deluge hypothesis
the sea of marmara (; ), also known as the sea of marmora or the marmara sea, and in the context of classical antiquity as the propontis is the inland sea, entirely within the borders of turkey, that connects the black sea to the aegean sea, thus separating turkey's asian and european parts. the bosphorus strait connects it to the black sea and the dardanelles strait to the aegean sea. the former also separates istanbul into its asian and european sides. the sea of marmara is a small sea with an area of , and dimensions . its greatest depth is .
sea of marmara