The BGS Lexicon of Named Rock Units — Result Details

Lower Flow Moss Lava Member [Obsolete Name And Code: Use FMLA]

Computer Code: LFMLA Preferred Map Code: notEntered
Status Code: Full
Age range: Visean Stage (CV) — Visean Stage (CV)
Lithological Description: The Lower Flow Moss Lava Member consists of alkali basalts and subordinate basanites and ankaramites.
Definition of Lower Boundary: The nature of the base is unknown but it might be unconformable on Inverclyde Group or older strata.
Definition of Upper Boundary: The Member is overlain by and interbedded with the Moyne Moor Lava Member in the western part of the area of occurrence. Elsewhere where locally known, a thick bole is developed on the uppermost flow and the Upper Flow Moss Lava Member rests on this.
Thickness: Not known.
Geographical Limits: Dunlop-Eaglesham moors between Glasgow, Kilmarnock and Hamilton, limited in area between Neilston (NS 440 560) in the northwest and Darvel (NS 610 390) in the southeast.
Parent Unit: none recorded or not applicable
Previous Name(s): Flow Moss Lavas (-4159)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Dunlop-Eaglesham moors between Glasgow, Kilmarnock and Hamilton, limited in area between Neilston (NS 440 560) in the northwest and Darvel (NS 610 390) in the southeast. MacPherson and Phillips. 1997. 
Reference(s):
MacPherson, K A T and Phillips, E R. 1997. The geology of the Clyde Plateau Volcanic Formation of the Kilmarnock district (Sheet 22E), central Scotland. British Geological Survey Report, WA/97/88. 
Phillips, E R and MacPherson, K A T. 1996. Petrology, geochemistry and classification of the Clyde Plateau Volcanic Formation, Kilmarnock district (Sheet 22), Midland Valley, Scotland. British Geological Survey Minerology and Petrology Technical Report, WG/96/24. 
MacPherson, K A T, Smith, R A and Akhurst, M C. 2000. Geology of the Kilmarnock district. Sheet description of the British Geological Survey 1:50 000 Sheet 22E Kilmarnock (Scotland). 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S022