back to top ......LATEST NEWS...... Tuesday 29th May Bernard Anderson GEOLOGY OF THE ORLOCK BRIDGE FAULT Meet at the layby (J 565 828), just off the A2, 2.5 miles east of the Ballyholme roundabout at 6:30 pm. Satnav: 54.668797, -5.574216 The Orlock Bridge Fault is a major structure which separates Ordovician rocks to its north from Silurian rocks to its south. The fault is seen both in North-east Ireland and in South-west Scotland.  It is a sinistral strike-slip fault and is named after this locaity west of Donaghadee, both in Ireland and in Scotland.   About us Summer prog. Winter prog. Contact us Useful links Home Archive