The BGS Lexicon of Named Rock Units — Result Details

Wall Hill Member

Computer Code: WLH Preferred Map Code: WLH
Status Code: Full
Age range: Tournaisian Stage (CT) — Tournaisian Stage (CT)
Lithological Description: Fining upwards cycles of light grey to white conglomerates and sandstones with thin purple siltstones, marls and shales.
Definition of Lower Boundary: Unconformable on Silurian turbidites.
Definition of Upper Boundary: Faulted.
Thickness: 360m (maximum)
Geographical Limits: Coastal outcrop between White Port (NX 7234 4336) and Port Mary (NX 7550 4540).
Parent Unit: Ballagan Formation (BGN)
Previous Name(s): Wall Hill Sandstone Group (-3764)
Wall Hill Sandstone Formation (-3132)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Coastal section between White Port and Port Mary. 
Reference(s):
Lintern, B C and Floyd, J D. 2000. Geology of the Kirkcudbright-Dalbeattie District. Memoir of the British Geological Survey, Sheets 5W, 5E and part of 6W (Scotland). 
Deegan, C E. 1973. Tectonic control of sedimentation at the margin of a Carboniferous depositional basin in Kirkcudbrightshire. Scottish Journal of Geology, Vol. 9, p. 1 - 28. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S005