The BGS Lexicon of Named Rock Units — Result Details

Lower Limestone Formation

Computer Code: LLGS Preferred Map Code: LLGS
Status Code: Full
Age range: Brigantian Substage (CX) — Pendleian Substage (CE)
Lithological Description: Cyclic: includes marine limestones. NOTE: See lithological description note in entry for Limestone Coal Formation (LSC).
Definition of Lower Boundary: Base of Hurlet Limestone.
Definition of Upper Boundary: Top of Top Hosie Limestone.
Thickness: 211m in type section
Geographical Limits: Central Scotland.
Parent Unit: Clackmannan Group (CKN)
Previous Name(s): Lugton Limestone Formation [Obsolete Name And Code: Use LLGS] (LUL)
Limestone, Lower (Dolomite) [Obsolete Name And Code: Use LLGS] (LLGD)
Lower Limestone Group (*299)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Wester Gartshore Borehole (NS67SE/99) from 82.0 to 293.0m depth. 
Reference(s):
MacGregor, A G, 1960. Division of the Carboniferous on Geological Survey Scottish Maps. Bulletin of the Geological Survey of Great Britain, No.16, 127-130. 
Ramsbottom, W H C, Calver, M A, Eagar, R M C, Hodson, F, Holliday, D W, Stubblefield, C J and Wilson, R B. 1978. A correlation of the Silesian rocks in the British Isles. Geological Society of London, Special Report No.10. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S032 S032 S034 S049 E004 E006 S040 S030 S030 S039 S040 S041 E001 E002 S008 S012 S015 S023 S013 S031 S031 S025 S024 S015 S338 S014 S023 S024