Megaflood ‘Made Island Britain’

Posted by Chris Parker
Jul 22 2007

 

By Jonathan Amos

Science reporter, BBC News

The megaflood made Britain what it is today, geographically

Britain became separated from mainland Europe after a catastrophic flood some time before 200,000 years ago, a sonar study of the English Channel confirms.

The images reveal deep scars on the Channel bed that must have been cut by a sudden, massive discharge of water.

Scientists tell the journal Nature that the torrent probably came from a giant lake in what is now the North Sea.

Some event – perhaps an earthquake – caused the lake’s rim to breach at the Dover Strait, they believe.

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