The BGS Lexicon of Named Rock Units — Result Details

Mullaghcarn Formation

Computer Code: MCA Preferred Map Code: MC
Status Code: Full
Age range: Neoproterozoic Era (AZ) — Neoproterozoic Era (AZ)
Lithological Description: Quartz and albite psammite and semi-pelites (mixed).
Definition of Lower Boundary: Gradational boundary with underlying Glengawna Formation.
Definition of Upper Boundary: Faulted off by Omagh Thrust.
Thickness: Max c.3km
Geographical Limits: North County Tyrone, Northern Ireland; southern foothills of the Sperrin Mountains and Lack Inlier, Northern Ireland.
Parent Unit: Southern Highland Group (SOHI)
Previous Name(s): Mullaghcarn Formation (Obsolete Code: Use MCA) (-391)
Mullaghcarn Formation (A) [Obsolete Code: Use MCA] (DCMF)
Mullaghcarn Formation (B) [Obsolete Code: Use MCA] (DCMG)
Mullaghcarn Schists:See Mullaghcarn Group (-4182)
Mullaghcarn Group (-1684)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Mullaghcarn area, south east to Mountfield Old Quarry, Tyrone, Northern Ireland. 
Reference(s):
Hartley, J J, 1938. The Dalradian rocks of the Sperrin Mountains and adjacent areas in Northern Ireland. Proceedings of the Royal Irish Academy, Vol.XLIV, section B, 141-171. 
Arthurs, J W, 1976. The geology and metalliferous mineral potential of the Sperrin Mountains area. Geological Survey of Northern Ireland, Special Report No.1, 119pp, 2app, 2 figs, 7 tables, 102 maps. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
N26