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): |
Geological Survey of Northern Ireland 1979. Pomeroy, sheet 34, solid, 1:50 000. [Southampton, Ordnance Survey for Institute of Geological Sciences.] |
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. |
1:50K maps on which the lithostratigraphical unit is found, and map code used: |
N34
|