Great Gaw Fault is a geological fault in County Antrim, Northern Ireland.
The Highland Boundary Fault is a major fault zone that traverses Scotland from Arran and Helensburgh on the west coast to Stonehaven in the east. It separates two different geological terranes which give rise to two distinct physiographic terrains: the Highlands and the Lowlands, and in most places it is recognisable as a change in topography. Where rivers cross the fault, they often pass through gorges, and the associated waterfalls can be a barrier to salmon migration.
Ballytober Fault is a geological fault in County Antrim, Northern Ireland.
Carnlough Fault is a geological fault in County Antrim, Northern Ireland.
Sixmilewater Fault is a geological fault in County Antrim, Northern Ireland.
Camlough Fault is a geological fault in County Armagh, Northern Ireland.
Kinnegoe Fault is a geological fault in County Armagh, Northern Ireland.
Newry Fault is a geological fault in County Armagh, Northern Ireland.
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.
Tow Valley Fault is a geological fault in County Antrim, Northern Ireland.
Clogher Valley Fault is a geological fault in County Fermanagh, Northern Ireland. The focus of deformation during the Variscan Orogenic Cycle in Northern Ireland was located on, and between, two major faults. In the north is the northern-bounding fault of the Midland Valley Terrane, the Castle Archdale Fault-Omagh Thrust Fault zone, while in the south is the Clogher Valley Fault. Carboniferous rocks located between these faults were affected by strike-slip, associated with intermittent dextral transpression and transtension. Between the Clogher Valley Fault and the Southern Upland Fault, the southern bounding fault of the Midland Valley Terrane, the Carboniferous rocks are relatively undeformed.
The Killadeas–Seskinore Fault is a geological fault in County Fermanagh, Northern Ireland.
Tempo–Sixmilecross Fault is a geological fault in County Fermanagh, Northern Ireland.
Belcoo Fault is a geological fault in County Fermanagh, Northern Ireland.
Elagh Fault is a geological fault in County Tyrone, Northern Ireland.
Laghy Fault is a geological fault in County Tyrone, Northern Ireland.
Omagh Fault is a geological fault in County Tyrone, Northern Ireland.
The Omagh Thrust Fault is a geological fault in County Tyrone. It is of one of the most important structural discontinuities in Northern Ireland and an extension of the Highland Boundary Fault which runs through Scotland.
Pettigoe Fault is a geological fault in County Tyrone, Northern Ireland.