The BGS Lexicon of Named Rock Units — Result Details

Lugton Limestone Formation [Obsolete Name And Code: Use LLGS]

Computer Code: LUL Preferred Map Code: LuL
Status Code: Index Level
Age range: Brigantian Substage (CX) — Brigantian Substage (CX)
Lithological Description: Dominantly a cyclical sequence of limestones and mudstones with thin coals and seatclays.
Definition of Lower Boundary: Rests on volcanic detritus of the Kirkwood Formation.
Definition of Upper Boundary: Passes up into mudstones of the Kilbirnie Mudstone Formation.
Thickness: 20 metres, but varies laterally.
Geographical Limits: Not defined.
Parent Unit: Not Applicable (-)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Kirkwood Borehole. 
Reference(s):
Monro, S K. 1999. Geology of the Irvine District. Memoir of the British Geological Survey, Sheet 22W and part of 21E (Scotland). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S022 S030