This is a gorgeous photo showing the raised beach sitting on its rock bench and sealed beneath pseudo-stratified brecciated slope deposits (we used to call that layer "the lower head"........ courtesy Pembs Coastal Photography, whose pictures are far better than mine! The bit in the box is the enlarged section of the upper part of the parent photo.
As we can see, when we examine this image carefully, there is a wide range of rock types in the raised beach. That almost certainly signals the incorporation into the beach of pre-Ipswichian glacially derived materials. How else would they have got here? From the Anglian glaciation?
So let's examine the rest of the modern stratigraphy. The full sequence looks like this:
8. Blown sand, loess and colluvium, incorporating modern soil (c 1m)
7. Upper brecciated slope deposits (c 2m)
6. Reddish stained colluvium -- a pro-glacial redeposited layer (c 2m)
5. Glaciofluvial sands and gravels incorporating flowtills (c 2m)
4 Mobile meltout till and flowtill (c 3m)
3. Irish Sea till -- massive, with shells and carbonized wood (c 4m)
2. Brecciated slope deposits with rockfall detritus close to broken-up cliff face (c 3m)
1. Raised storm beach on rock bench (c 1m)
Thicknesses are approximate -- no part of the cliff shows the full stratigraphic sequence. In general, the lower part of the sequence is in the north and the upper (younger) deposits are best preserved in the south. The upper brecciated slope deposits are, however, best preserved near the top of the highest cliffs, close to a convenient bedrock source. They appear to be approximately equivalent to the reddish stained colluvium. Together, deposits 6 and 7 used to be referred to as "the Abermawr rubble drift".
The raised beach (1) appears to be around 1m thick, but exposures are intermittent and sometimes masked by debris falls from above. It's in a very risky position. I tried to climb up to it once, and had to give it up, fearing for life and limb.
The lower brecciated slope deposit (2) is clearly just a jumble of rockfall debris close to the rock outcrops, but further away there are signs of rough stratification, as seen in the exposures 50 years ago. Now, as then, we can assume that these rough stratifications within the unit do represent some climatic oscillations, maybe over a very long period of time.
Massive Irish Sea till with an oxidised layer above, grading into flowtill (?) and mixed sediments with a lower clay content.
The junctions between layers 3, 4 and 5 are in places difficult to discern. They must be very closely related in age.