r08T PLIOCENE MARINE — WALES. 



8.1 



POST PI.XOCSXJ'E Ti/tAIllKti-conf. 



WALES. 

 MOEL-Y-TRYFAN.* 



* The shell-bearing sands and gravels of Mocl-y-Tryfan liave a very irregularly eroded surface, 

 and are partly overlaid by glacial debris of stiff clay full of ice-scratched stones and large 

 boulders. — A.C.R. 



