back to top About us Summer prog. Winter prog. Contact us Useful links Home ......LATEST NEWS...... Rob Raine. UNDERGROUND, OVER GROUND, WONDERFUL SCREE. Sedimentary geology of the Carboniferous and Permian rocks of the Cultra area. Meet at 9:00 am at the east car park at Holywood Seapark, off Ballymenoch Park road (Grid reference J 404 799, Satnav N54° 38' 51.37" W5° 49' 31.53") (0.6 km walk from Marino train station).   We will walk along the coastal path for a total of 3 km, with regular stops to access the rocks on the beach. The walk will finish at Craigavad at 12:30. Low tide will be at 08:39 and high tide is at 15.14. After the walk people will be free to either continue walking along the coast or to walk the 3 km back to Seapark for lunch or departure.   On the walk we will see many of the rock units that underlie Belfast, including the Sherwood Sandstone with basalt dykes, The Permian mudstones, breccias (brockram) and carbonates, and Carboniferous lake, river sediments and mudflat sediments. The Silurian mudrocks that form the ‘basement’ underlying these rocks will be seen at the end of the walk.    Most of the foreshore is composed of sand and shingle and not slippery. but there are some exposed rocks which will be extremely slippery. Sturdy footwear with ankle support is recommended and sun cream/hat or waterproofs depending on the weather. Bring a flask or snacks to keep you going. Bernard Anderson GEOLOGY WEEKEND IN ROSGUILL. Note that this trip will be by car, not by coach as previously advertised.