Omagh Thrust
The Omagh Thrust Fault is a geological fault in County Tyrone. It is of one of the most important structural discontinuities in Northern Ireland[1] and an extension of the Highland Boundary Fault which runs through Scotland.[2]
Geological map of Ireland. The red line marks the Omagh Thrust Fault.
The fault occurred in the Caledonian orogeny, during a late stage of this period of mountain building. Older sequences of Dalriadan metamorphic strata were moved over younger Ordovician ones with the fault as their boundary.
There is access to a view of the fault at Mountfield Quarry, County Tyrone. This has been designated an Area of Special Scientific Interest.[1]
See also
- List of geological faults in Northern Ireland
- Geology of Northern Ireland
References
General 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
Footnotes
| Volcanism |  Basalt columns at Giant's Causeway | |
|---|---|---|
| Volcanic plugs | ||
| Dykes and Sills | ||
| Metamorphic | ||
| Sedimentary | ||
| Lists | ||
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