by EWW » 11 Aug 2020, 08:24
Just received this reply back from the BGS.
Big thank you to.. Clive Mitchell MSc Industrial Minerals Geologist.
Thank you for your email – I suspect you are referring to the Carstone Formation which underlies the beach at the coastal cliff end of Hunstanton. Looking at Google Earth satellite view I can see what you mean – there does appear to be lines of rocks. This is the way that the rock has eroded along the joints in the rock – parallel planes of weakness in the rock – the rock has been preferentially eroded along these planes of weakness. There appears to be at least two set of joints one cross cutting the other to leave behind these lines of rocks.
The Carstone is a sandstone from the Cretaceous geological time period and is 101 to 113 million years old.
I do not want thanks for any research I am able to help out with. I just love doing it.