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Wednesday, 9 June 2010

Southern Britain c 400,000 years ago?




Above: Imagine this as being the scene out to the west of the Scilly Isles during the Anglian or Wolstonian glacial episode, with the edge of the Irish Sea Glacier calving into deep water. (Actually this is the edge of the Columbia Glacier in Alaska)

Below: Ice foot and chaotic pressure ridge made of blocks of glacier ice and sea ice driven onshore. Somewhere on the south coast of England at the peak of the Anglian or Wolstonian glacial episode. (Actually this is Cape Murchison, Robeson Channel, between Ellesmere Island and Greenland.)

At the time, both land and sea might have been c 140m below their present-day elevations.

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