(The Triassic Beds of Sully with Jurassic Boulders scattering the beach) - 2003 Fossils are uncommon at Sully, most of the rocks are extremely hard Triassic rocks which make up most of the foreshore. Along the beach, Jurassic boulders can be seen and these can contain fossils. Sully has interesting geology and the beds here are fascinating to see, but it is not a good location for collecting, although you may find the occasional shell or ammonite. (The foreshore is very hard and fossils are uncommon) - 2003