The BGS Lexicon of Named Rock Units — Result Details
Tyrone Plutonic Group
| Computer Code: | TPG | Preferred Map Code: | TPG |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Ordovician Period (O) — Ordovician Period (O) | ||
| Lithological Description: | Hornblende gabbro and diorite with cross-cutting invasive dyke systems. | ||
| Definition of Lower Boundary: | Faulted. | ||
| Definition of Upper Boundary: | Faulted. | ||
| Thickness: | Unknown | ||
| Geographical Limits: | Mid-Ulster, Co.Tyrone c.10km west of Cookstown. | ||
| Parent Unit: | Not Entered (?) | ||
| Previous Name(s): | [Obsolete Code: Use TPG]
(*397)
Tyrone Basic Plutonic Complex [Obsolete Name And Code: Use TPG] (DATY) Tyrone Igneous Series (Plutonic Rocks) [Obsolete Name and Code: Use TPG] (-2497) Tyrone Basic Plutonic Complex [Obsolete Name and Code: Use TPG] (-3087) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Reference Section | Carrickmore Quarry (sheeted dyke complex) | ||
| Reference Section | Principle reference section. Black Rock, c500m south of Beaghmore Stone Circles, Beaghmore Townland, Co. Tyrone (gabbro/diorite complex) | ||
| Type Area | East Tyrone, west of Cookstown, east of Beaghbeg, and in vicinity of Carrickmore. | ||
| Reference(s): | |||
| Geological Survey of Northern Ireland. Draperstown, sheet 26, solid, 1:50,000 | |||
| Geological Survey of Northern Ireland, 1983. Cookstown sheet 27, solid 1:50,000. | |||
| 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: | |||
| N27 | |||