[JimSEA]

I think what you are looking for are the ice sheet collapses and subsequent drainage of Lake Agassiz and Lake Ojibway as the Canadian sheet over where Hudson bay is now located broke up and melted. There was a rush of flooding down the Mississippi and out the Hudson Straight. This is estimated to have occured in phases between 8,400 and 8,000 years before present.

I am taking the information from Stephen Oppenheimer's Eden in the East; The Drowned Continent of Southeast Asia.

Also of interest are the drastic geological changes which accompanied the massive weight distribution changes accompanying the melt of the ice sheets. It would seem to have direct relevance to this article.

[blam]

"Also of interest are the drastic geological changes which accompanied the massive weight distribution changes accompanying the melt of the ice sheets. It would seem to have direct relevance to this article."

I agree. There would have been enormous earthquakes and volcanos that are usually overlooked/missed in these articles...those events were disasters onto themselves. The north of England is still rising while the south is sinking...like a see-saw.