Orlock Bridge Fault is a major geological fault which extends through County Armagh, Northern Ireland and across the North Channel into Galloway in southern Scotland.Sheets 1 & 3 with pts of 7 and 4W (Scotland series) The Rhins of Galloway 1:50,000 scale geological map. British Geological Survey.
See also List of geological faults in Northern Ireland
References
Map sheet 44 (and accompanying memoir) of the series of 1:50,000 scale geological maps of Northern Ireland published by Geological Survey of Northern Ireland. Lyle, P. 2003 Classic geology in Europe 5 The north of Ireland Terra Publishing, Harpenden