Here's a brief explanation of the striation from my brother-in-law, who is a retired geo-morphologist/geographer:
Looks like thinly bedded limestone on its side (i.e. age sequence is youngest to oldest near to far or vice versa) and then some faulting – you can see a slight displacement of structures. Marine erosion has then picked out the bedding planes. So it is sediment laid down in thin layers, consolidated through geological time and then tipped over on its side by tectonic movement, somewhat faulted during that process, and then exposed on the shore and eroded by waves and shingle.
Last edited by jean h
on 01 Feb 2021, 07:53, edited 1 time in total.