The BGS Lexicon of Named Rock Units — Result Details

Keith Limestone Member [Obsolete Name And Code: See CUTL]

Computer Code: KEIT Preferred Map Code: SYMB
Status Code: Index Level
Age range: Neoproterozoic Era (AZ) — Neoproterozoic Era (AZ)
Lithological Description: Metalimestone, mid-grey, colour-banded, generally massive but with many open joints and cavities.
Definition of Lower Boundary: Base of massive, banded crystalline limestone in semipelites of the Fordyce Limestone Formation.
Definition of Upper Boundary: Top of massive, banded, crystalline limestone overlain by semipelites with thin beds of quartzite and calc-silicate rock (Fordyce Limestone Formation).
Thickness: 28m proved in boreholes.
Geographical Limits: Keith area, Braehead (85E) to Drum (86W), and Muldearie (85E).
Parent Unit: Fordyce Limestone Formation (FORD)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Reference Section  Boreholes (proposed Keith Bypass) NJ 45 SW/14-19 and NJ 44 NW/53-55 
Reference Section  BGS Rosarie Borehole 0.9m to 37.25m and Rosarie Quarry (formerly Hillockhead Quarry). 
Type Section  Old railway cutting and Cuthill Quarry (formerly known as Glenisla Quarry), Old Keith. 
Reference(s):
Robertson, T, Simpson J B and Anderson J G C. 1949. The Limestones of Scotland. Special reports on the mineral resources of Great Britain. Vol.35. Memoir of the Geological Survey. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S085