Graham Eaton / Conglomerate at the unconformity between the Carboniferous limestone below and the Triassic sandstone above at Sully, near Cardiff, South Glamorgan, Wales, UK. September.

Graham Eaton / Angular unconformity, between the underlying Cambrian age sedimentary rocks and the overlying Ordovician sedimentary rocks. Trwyn Wylfa, Abersoch, Wales, August. An unconformity represents a time ga...

Graham Eaton / Conglomerate rock at unconformity between Carboniferous limestone and Triassic sandstone. Sully, South Glamorgan, Wales, UK. September 2018.