The BGS Lexicon of Named Rock Units — Result Details

Dumdruff Hill Lava Member

Computer Code: DHLA Preferred Map Code: notEntered
Status Code: Full
Age range: Visean Stage (CV) — Visean Stage (CV)
Lithological Description: The Dumdruff Hill Lava Member consists of trachyandesites and trachytic lavas.
Definition of Lower Boundary: The base is unconformable on the Eaglesham Lava Member that consists of basaltic lavas.
Definition of Upper Boundary: The Member is overlain in part by the Gowk Stane Pyroclastic Member and the Harelaw Lava Member, with which it is partly interbedded. The upper Flow Moss Lava Member also locally rests on this Member.
Thickness: 45 to 70m
Geographical Limits: Dunlop-Eaglesham moors between Glasgow, Kilmarnock and Hamilton around Ballageich (NS 520 520) and Braidley Moss (NS 610 410) south of Dumdruff Hill.
Parent Unit: Clyde Plateau Volcanic Formation (CPV)
Previous Name(s): Dumdruff Hill Lavas (-209)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Area  Dunlop-Eaglesham moors between Glasgow, Kilmarnock and Hamilton around Ballageich (NS 520 520) and Braidley Moss (NS 610 410) south of Dumdruff Hill. MacPherson and Phillips, 1997. 
Reference(s):
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). 
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. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S022