Edited sentence: ( The Acapulco paper argues that the comet impact caused the late Ice Age extinctions by way of a sudden cooling of the earth (Younger Dryas event) by disrupting the Gulf Stream warm water current by the surge of glacial melt waters, rather than by a sudden rise in sealevel ).Anderson's book cites the finding of Marine Diatoms found in southern Wisconsin as evidence of a recent marine transgression at the end of the Ice Age.Another recent theory  is the idea that a comet strike on the Ice Sheet covering Northern Canada towards the end of the Pleistocene Ice Age, resulted in a large release of melt water and ice into oceans rasing global sea level.Proposed in the book "Solving the Mystery of the biblical Flood" by William Scott Anderson.Recent papers presented at the May 2007 meeting of the American Geophysical Union in Acapulco, support a late Ice Age comet impact on Laurentian Ice sheet, citing a layer of sediment containing glassly carbon, carbon spherules and magnetic grains with a high level of iridium.The evidence of megaflooding that occurred at the end of the Ice Age, also supports the very large release of melt waters that a comet impact on an Ice sheet would create and if that water was caused suddenly by an impact event, the resulting rise in sea level would have caused a brief global flood until glacial rebound and ocean floor depression accommodated the shift in water on the earth's crust