The BGS Lexicon of Named Rock Units — Result Details

Glencar Limestone Formation

Computer Code: GRLF Preferred Map Code: GRLF
Status Code: Full
Age range: Asbian Substage (CR) — Asbian Substage (CR)
Lithological Description: Limestone, grey, weathering pink-brown, argillaceous, bioclastic, interbedded with equal thickness of dark grey shale and mudstone.
Definition of Lower Boundary: Conformable but rapid from underlying Benbulben Shale Formation.
Definition of Upper Boundary: Conformable; always abrupt, locally interdigitating with succeeding Dartry Limestone Formation.
Thickness: 100 - 180m
Geographical Limits: Northwest Carboniferous basin of Ireland.
Parent Unit: Tyrone Group (TYRO)
Previous Name(s): Calp Limestone Of The Calp Or Middle Limestone (-2217)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Numerous stream sections and "steep, precipitous scarps" in the western part of the Dartry Mountains, County Sligo, Ireland. Centred on Grid Square C 17 34. 
Reference(s):
Brunton, C H C and Mason, T R, 1979. Palaeoenvironments and correlation of the Carboniferous rocks in west Fermanagh, Northern Ireland. Bulletin of the British Museum of Natural History (Geology), Vol.32, 91-108. 
Oswald, D H, 1955. The Carboniferous rocks between the Ox Mountains and Donegal Bay. Quarterly Journal of the Geological Society of London, Vol.111, Part 2, 167-186. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
N32