rock basins

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harestonesdown wrote:
Rhiannon wrote:
Probably amusing noone but myself, but spotted this, a video of water sloshing about in a very deep basin. I suppose that's how such things must be formed?
http://www.youtube.com/watch?v=zwU8Vww8ahs&feature=player_embedded
It's in the back end of nowhere (in the best possible sense), somewhere about NJ111027
The water and the particles it dislodges.
There is also chemical weathering (hydrolysis ) of the feldspar in granite which may well be the initial weakening and freeze /thaw too .