The BGS Lexicon of Named Rock Units — Result Details

Loch Humphrey Member

Computer Code: LHY Preferred Map Code: LHY
Status Code: Pending Upgrade
Age range: Visean Stage (CV) — Visean Stage (CV)
Lithological Description: Airfall and bedded red-purple tuff with lapilli and blocks up to 0.3 metres; rooty with carbonaceous streaks near top in places, grey mudstone with fish scales in others. Overlies Markle type lava and underlies Dalmeny type lava.
Definition of Lower Boundary: 21.35 metres in IGS Loch Humphrey Borehole (NS47NE/1).
Definition of Upper Boundary: At NS 4600 4550.
Thickness: Variable + 30 metres.
Geographical Limits: Not defined.
Parent Unit: Clyde Plateau Volcanic Formation (CPV)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Type Area  Sheet SO30E. Borehole NS47NE/1. 
Paterson, I B. et al. 1998. Geology of the Glasgow district. Memoir of the British Geological Survey, Sheet 30E. (Scotland). 
1:50K maps on which the lithostratigraphical unit is found, and map code used: