North of Portmarnock, on the east coast of Ireland to the east of Dublin, is a short stretch of coastline with abundant exposures of Carboniferous rocks in foreshore platforms, containing beautifully preserved crinoids, bryozoans, bivalves, corals and brachiopods. The cliffs and platforms are protected, but many pebbles are washed out from the exposures along the coastline between Malahide and nearby Portmarnock.Carboniferous, Foreshore, Rating: ♦♦♦♦
To the south of Seafield Tower, which is a sixteenth century castle ruin built of local red sandstone, is a highly fossiliferous section of Carboniferous Limestone. The limestone is packed with beautifully preserved crinoids, bryozoans, corals, shells and, if you are lucky, sharks’ teeth. These are exposed on the foreshore platforms.
Carboniferous, Foreshore, Rating: ♦♦♦♦♦
There are many old quarries on the west side of the elevated golf course at Cleeve Hill and on top of the common itself. Fossils are varied and abundant, and plenty can be collected from scree below the faces. However, the in situ rock should not be hammered. Views from the top of Cleeve Common, the highest hill in Gloucestershire, are stunning. Jurassic, Disused Quarries, Rating: ♦♦♦