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  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 Section  Boreholes (proposed Keith Bypass) NJ 45 SW/14-19 and NJ 44 NW/53-55 
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