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Friday, 30 October 2020

The Bosherston Meltwater Channels?

 

Porthclais, near St Davids.

Cwm Gwaun.

Gribin, Solva (David Upton).



Three Bosherston Images from Pem Bow Drone on YouTube...
The Bosherston Lily Ponds are justtly famous as one of  the "must see" destinations in Pembrokeshire -- but if they had not been dammed,  flooded and turned into a rather special series of connected limestone lakes, they would still be rather special -- sharing a number of key features with the meltwater channels of north Pembrokeshire (very flat long profiles, steep sides, flat floors, anastomosing pattern.......).

If they carried large volumes of glacial meltwater at the end of each glacial episode, why not Bosherston too? Then there are the other rather strange valleys between Saundersfoot and Pendine, carrying misfit streams and with cross-sections that suggest they were cut, or at least modified, by large volumes of meltwater.





2 comments:

chris johnson said...

And two deep valleys between Tenby and Saundersfoot.

BRIAN JOHN said...

Very true, Chris. They are quite spectacular -- the old hotel in Waterwynch is now owned by Charlotte Church, I think -- and used as a sort of women's refuge.....