How much do we know about Stonehenge? Less than we think. And what has Stonehenge got to do with the Ice Age? More than we might think. This blog is mostly devoted to the problems of where the Stonehenge bluestones came from, and how they got from their source areas to the monument. Now and then I will muse on related Stonehenge topics which have an Ice Age dimension...
THE BOOK
Some of the ideas discussed in this blog are published in my new book called "The Stonehenge Bluestones" -- available by post and through good bookshops everywhere. Bad bookshops might not have it....
To order, click HERE
Some of the ideas discussed in this blog are published in my new book called "The Stonehenge Bluestones" -- available by post and through good bookshops everywhere. Bad bookshops might not have it....
To order, click HERE
Tuesday, 5 April 2016
The Pwllderi cliffs
When I was over at Pwllderi, on the west side of the Pencaer Peninsula, the other day, I was suddenly struck by the extraordinary degree of ice moulding on the west-facing cliffs. Features like these would not be out of place on the coasts of Greenland or Antarctica, and they indicate just how powerful glacier ice can be when it is moving directly onto an old coastline (here from the NW) and is being forced to move upslope. So there must have been powerful abrasion, a great deal of entrainment of loose material, and a lot of shearing within the ice mass under compression.
Much of the coastline between Abermawr and St David's Head looks like this, and hillocks on the edge of the coastal plateau have also been smoothed off and rounded. I must do some more work on this, when I can find the time...... and one interesting question (one of many) is this: to what extent are these Devensian features, and to what extent are they inherited from earlier glacial episodes?
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1 comment:
Strange how there is almost a symmetry between the photograph of Pwllderi and the rainbow ice image in the post below
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