The BGS Lexicon of Named Rock Units — Result Details

Meall Dearg Formation

Computer Code: TAD Preferred Map Code: TAD
Status Code: Full
Age range: Stenian Period (AI) — Mesoproterozoic Era (AX)
Lithological Description: Pale-red sandstone with bed thickness between 0.3 and 5 m; abundant planar cross-bedding; locally wave-rippled. Locally rare pebble beds.
Definition of Lower Boundary: Conformably overlies the Poll a ' Mhuilt Member (mudstone).
Definition of Upper Boundary: not exposed - eroded
Thickness: 240 m (minimum)
Geographical Limits: Occurs on several headlands (Stoer peninsula, Rubha Coigach) and near Gairloch, in the NW Highlands,east of the Coigach Fault, and west of the Moine Thrust
Parent Unit: Stoer Group (TA)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Type Section  Coastal section between Rubh' a' Mhill Dheirg and Balchladich Bay, Stoer Peninsula 
Reference Section  east side of Achnahaird Bay, Enard Bay. 
Gracie, A.J. and Stewart, A.D., 1967. Torridonian sediments at Enard Bay, Ross-shire. Scottish Journal of Geology, 3: 181-194. 
Stewart, A D. 2002. The later Proterozoic Torridonian rocks of Scotland: their sedimentology, geochemistry and origin. Geological Society Memoir. Vol. 24. (The Geological Society.) 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S107 S091