| Computer Code: |
GOCF |
Preferred Map Code: |
GOCF |
| Status Code: |
Full |
| Age range: |
Mid Devonian Epoch (DM)
— Late Devonian Epoch (DU) |
| Lithological Description: |
Pebble to boulder conglomerates with sandstone beds; 2 horizons of contemporaneous 'andesitic' lavas. |
| Definition of Lower Boundary: |
Very confused relationship. May be unconformable on underlying Shammaghery Sandstone Formation, may be normal but abrupt, commonly faulted or not exposed. |
| Definition of Upper Boundary: |
Supposedly interfingers laterally with and merges gradationally upwards into Raveagh Sandstone Formation. |
| Thickness: |
From about 2440 m - 2720 m thick. |
| Geographical Limits: |
none recorded or not applicable
|
| Parent Unit: |
Fintona Group (FIN)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Reference Section |
Bernisk Glen, 3.5 km ESE of Sixmilecross upstream of C-class road bridge. |
| Type Area |
Central Co. Tyrone between Pomeroy and Fintona, between Tempo-Sixmilecross Fault and the Ballygawley Fault. |
| Reference(s): |
| Mitchell, W I and Owens, B, 1990. The geology of the western part of the Fintona Block, Northern Ireland: Evolution of Carboniferous basins. Geological Magazine, Vol.127 (5), 407-426. |
| Waters, C N, Gillespie, M R, Smith, K, Auton, C A, Floyd, J D, Leslie, A G, Millward, D, Mitchell, W I, McMillan, A A, Stone, P, Barron, A J M, Dean, M T, Hopson, P M, Krabbendam, M, Browne, M A E, Stephenson, D, Akhurst, M C, and Barnes, R P. 2007. Stratigraphical Chart of the United Kingdom: Northern Britain. (British Geological Survey.) |
| Geological Survey of Northern Ireland. 1979. Pomeroy, sheet 34, solid, 1:50 000. (Southampton: Ordnance Survey for Institute of Geological Sciences.) |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
N33
|
