The BGS Lexicon of Named Rock Units — Result Details
Fintona Group
| Computer Code: | FIN | Preferred Map Code: | notEntered |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Mid Devonian Epoch (DM) — Late Devonian Epoch (DU) | ||
| Lithological Description: | Clastic sediment, red-bed conglomerates, sandstones, siltstones and mudstones; contemporaneous acid volcanic rocks in the lower levels. | ||
| Definition of Lower Boundary: | Unconformable in the northeast and east on the early Caledonian Tyrone Igneous Complex and the Lower Silurian at Pomeroy. Elsewhere in Fintona Block the contact is faulted. | ||
| Definition of Upper Boundary: | Either not exposed and faulted out, or overlain unconformably by Lower Carboniferous basal clastics and Visean marine sediments on the south side of the Fintona Block. | ||
| Thickness: | Difficult to gauge owing to lack of a distinctive lithostratigraphy. Estimated unreliably as c.3000m in east outcrop (1:50,000 Sheet 34, Pomeroy). | ||
| Geographical Limits: | The Fintona Block, Northern Ireland. | ||
| Parent Unit: | Not Applicable (-) | ||
| Previous Name(s): | Fintona Beds [Obsolete Name and Code: Use SHAN, FIN]
(-3404)
Dingle Beds [Obsolete Name and Code: Use FIN, TPMS, BRC, BLM] (-1993) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Area | Part of the Fintona Block between Irvinestown, Drumore, Trillick and Fintona. Intermittent exposure in quarries, pits and stream sections. | ||
| Reference(s): | |||
| House, M R, Richardson, J B, Chaloner, W G, Allen, J R L, Holland, C H and Westoll, T S. 1977. A Correlation of Devonian rocks of the British Isles. Geological Society of London, Special Report No.8, Scottish Academic Press, Edinburgh. | |||
| Wilkinson, S B and Kilroe, J R, 1886. Explanatory Memoir to accompany Sheet 33 of the map of the Geological Survey of Ireland including the district around Omagh, Fintona and Irvinestown. Her Majesty's Stationery Office, Dublin and London. | |||
| 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. | |||
| Nolan, J, 1880. On the Old Red Sandstone of the north of Ireland. Quarterly Journal of the Geological Society of London, Vol.36, 529-535. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| none recorded or not applicable | |||