A small update. Apparently the piece in the journal wasn't actually written by Rob and Richard -- but by the Editor, Mike Pitts, on the basis of info provided. That may explain the emphasis on "the third option" and the reluctance to endorse the glacial erratic theory.......
But whoever wrote it, the article makes a very valuable contribution to the debate, and I appreciate the fact that Mike Pitts was willing to give space to it, given that some of his senior colleagues will not be best pleased.
Apologies to Rob and Richard for assuming that they wrote the piece (there was no attribution on it), and for originally assuming that their opinions may have been influenced by the people they were working for. Rob assures me that that was not the case, and of course I accept his assurances.
Above is a rough map that shows suggested ice movement directions of the two ice streams -- one sweeping south of the Mendips, and the other (with many more erratics from sources in southern Wales and the Marches) coming in towards Salisbury Plain from the NW. This will no doubt be replaced by better maps as the glacier modelling proceeds.
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