Devensian till at Parrog, Newport

 

Beneath the Parrog footpath, in front of the houses, there are several excellent exposures of till which is likely to be of Devensian age.  There has been a lot of disturbance here over the centuries, and it's difficult to see what the full sequence of deposits is. The till is up to 2m thick, and it is not particularly clay-rich, so I would hesitate to call it "Irish Sea till".  It's more like a melt-out till or ablation till, and it has characteristics in common with the till deposits that we find on clifftops and in embayments all around the Pembrokeshire coast.  It's overlain by about 1m of slope breccia, which is then overlain by another slope deposit made of colluvium, and then by a sandy modern soil.

So what we have here is the top part of the Devensian sediment sequence, matching well with the upper part of the sequence at Abermawr and many other sites.