| Computer Code: |
TVG |
Preferred Map Code: |
TVG |
| Status Code: |
Full |
| Age range: |
Arenig Series (OR)
— Abereiddian Stage (O2) |
| Lithological Description: |
Heterogeneous volcanic sequence: tuff, agglomerate, chert, with pillow lava horizons. Outcrop tectonised and metamorphosed in greenschist facies. |
| Definition of Lower Boundary: |
Faulted off. |
| Definition of Upper Boundary: |
Faulted off. |
| Thickness: |
Estimated 4-5km |
| Geographical Limits: |
Central Co. Tyrone, Northern Ireland. |
| Parent Unit: |
Not Applicable (-)
|
| Previous Name(s): |
Tyrone Igneous Series
(-581)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Reference Section |
Principal reference section: Beaghbeg Townland Area, Co.Tyrone. |
| Type Area |
Mid Tyrone; Mountfield [H 535 786] to Creggan [H 630 790] to Tullybrick [H 730 900]. |
| Reference(s): |
| Hartley, J J. 1933. The geology of north-eastern Tyrone and the adjacent portions of County Londonderry. Proceedings of the Royal Irish Academy, Vol.41, section B, 218-85. |
| 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: |
|
N34
|
