The BGS Lexicon of Named Rock Units — Result Details
Iniscarn Formation
| Computer Code: | IS | Preferred Map Code: | IS |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Tournaisian Age (CT) — Tournaisian Age (CT) | ||
| Lithological Description: | Conglomerate and breccia with subordinate argillaceous beds. | ||
| Definition of Lower Boundary: | Rests unconformably on Pre-Carboniferous basement (Dalradian - Ordovician). | ||
| Definition of Upper Boundary: | Not known; probably conformable with Altagoan Formation. | ||
| Thickness: | 600m+ | ||
| Geographical Limits: | Desertmartin area, Co.Londonderry, Northern Ireland. | ||
| Parent Unit: | Tyrone Group (TYRO) | ||
| Previous Name(s): | Lower Calciferous Sandstone Measures [Obsolete Name And Code: See IS]
(LCLC)
Iniscarn Sandstone Formation [Obsolete Name and Code: Use IS] (-2867) Lower Calciferous Sandstone [Obsolete Name and Code: Use IS] (-1615) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Section | Reubens Glen | ||
| Reference Section | Golan Glen | ||
| Reference(s): | |||
| Geological Survey of Northern Ireland, 1983. Cookstown sheet 27, solid 1:50,000. | |||
| Egan, F W, 1881. Explanatory memoir to accompany sheet 27 of the maps of the Geological Survey of Ireland. Dublin. | |||
| Owens, B, Gueinn, K J and Cameron, I B, 1977. A Tournaisian miospore assemblage from the Altagoan Formation (Upper Calciferous Sandstone) Draperstown, Northern Ireland. Pollen et Spores, Vol. XIX, No.2. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| N27 | |||