Following the winter storms there are some new exposures of the submerged forest at Abereiddi -- near the stream at the lower edge of the pubble bank. Just a few traces of the peat bed, with broken branches exposed at the surface. Normally these features are buried beneath a metre or more of beach sand. We can't see any stratigraphic relationships at the moment -- but there is a considerable "boulder bed" which looks as if it lies on top of the peat. I suspect that there is a stratigraphic inversion there, and that these are "old boulders" that have been incorporated into the storm beach and have migrated with it as it has moved inland over the top of the peat bed during the Holocene.
Or are the boulders in situ, related to a Devensian till deposit that underlies the peat bed?
More studies required........
1 comment:
I'll have to go and look.
On a similar vein Martin Bates is talking about the ice age in Theatre Gwaun, Fishguard at 6pm on 5th March
https://theatrgwaun.com/production/way-out-west/
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