Extensive peat beds running beneath the storm beach ridge, which had been flattened and reshaped during the storms. On the right, the residual "boulder bed" which is now a prominent feature of the area normally occupied by the sandy beach. The beach has probably been lowered by around 2m.
The submerged forest at Newgale is currently very well exposed, following two severe storms during the month of February. The photos show that the exposures are very extensive across a wide area littered with concentrations of well-rounded beach pebbles and also boulders up to 1 m in diameter. In truth, the boulder litter is more spectacular than the peat beds and remnants of trees, branches and roots -- and there are no clear vertical sections in which one can see stratigraphic relationships.
In 2014 the relations between the various deposits were easier to see and interpret. This is what I said at the time:
In trying to work out what has happened here, my best bet is as follows. There are some very old deposits here -- maybe dating from the last interglacial. These materials must have been overridden during the Devensian ice advance of the Irish Sea Glacier, but we see no signs of till or periglacial materials out here in the open bay. Peat beds and woodland then started to form after the ice retreat, when the coastline was far out to the west. So some peat beds might be more than 7,000 years old. I think these peat beds and the forest might have survived for at least 5,000 years -- this could be established by pollen analysis and examination of the tree species represented. The sea rose inexorably, and as it did so it drove a storm beach ridge eastwards, covering the old peaty / woodland area bit by bit, leaving it submerged beneath pebbles and sand. Within the last 2,000 years or so the eastwards advance of the storm beach ridge has slowed down as sea level has stabilised, but we know that it has continued because historical records show that there have been at least two other inns at Newgale, each of them in the area now submerged beneath the beach. The current Duke of Edinburgh Inn, alongside the road that has been blocked by pebbles several times this winter, is equally vulnerable -- and one wonders how long it will survive!
The interbedding of storm beach pebbles and peat beds suggests to me individual storm events in which waves have overtopped the ridge, flinging pebbles onto the peaty boggy area on the landward side -- then followed by more peat formation, when "normal" waterlogged or lagoonal conditions returned.
So it is quite possible that the peat beds are of all sorts of ages, with some of them shown in the photos above no older than a few centuries........