nigelswift wrote: On the balance of what's known so far one might say glaciers probably brought them to Somerset and people then brought them to Wiltshire - but that's still a guess and may yet be shown to be entirely wrong.
I'd agree with that. That scenario does at least have the benefit of some field evidence -- undisputed as far as I know, except by Wainwright! - to support it.
The really interesting questions now are these: where exactly was the ice limit? and in what form was the erratic assemblage dumped -- in a train, or a fan, or in a morainic ridge along the ice front?
There are other questions about the age of the deposits, and the manner in which they have been eroded and buried (for example in Somerset) by more recent sediments.
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