Some of the ideas discussed in this blog are published in my new book called "The Stonehenge Bluestones" -- due for publication on June 1st 2018. After that, it will be available by post and through good bookshops everywhere. Bad bookshops might not have it....
To order, click

Thursday, 30 July 2015

Sea level 20,000 years ago

 I came across this very striking image which shows in red the area which is currently inundated but which was dry land at the peak of the Devensian glacial episode c 20,000 years ago.  In Britain, the North Sea, Scandinavia and the Baltic, large parts of this "dry" area were ice-covered, and because of the isostatic depression of the land surface under the weight of ice, the sea was actually able to penetrate across the boundary between the area shown in red and the area shown in light blue.  As ever, things in reality were a good deal more complex than they appear in nice simple illustrations like this one.......

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