The snow on the continents during the Ice Age was the equivalent of about three hundred vertical feet of ocean water, because that on average was the amount vertically that the sea level rose relative to the isostasy(s) of the landmasses proximal when the Ice Age was ending (during about a century). Of course the opposite of the cause of the Ice Age ended it, that the ocean cooled to about today’s temperatures by circa 1500 b. c., cooled during about nine hundred years following Noah’s Flood.
