The BGS Lexicon of Named Rock Units — Result Details

Hopeman Sandstone Formation

Computer Code: HMSF Preferred Map Code: HMSF
Status Code: Full
Age range: Guadalupian Epoch (PUG) — Early Triassic Epoch (TE)
Lithological Description: Predominantly yellowish aeolian sandstones, some deposited by sheet floods; fine- to coarse-grained, with well rounded grains. Basal beds are pebbly. Large-scale, crossbedded or laminated; rarely contorted. Some beds friable, others hard and siliceous. Contains fossil reptiles.
Definition of Lower Boundary: The unconformity with the Devonian Upper Old Red Sandstone.
Definition of Upper Boundary: The top of the formation is taken at the base of the waterlain sandstones of the Burghead Sandstone Formation.
Thickness: 61m (Clarkly Hill No. 1 Borehole [NJ 1270 6833]) to 70m +
Geographical Limits: Moray Firth area.
Parent Unit: Heron Group (HERO)
Previous Name(s): SANDSTONES OF HOPEMAN
SANDSTONES OF CUTTIES HILLOCK (QUARRY WOOD)
Alternative Name(s): HOPEMAN-CUMMINGSTOWN SANDSTONE
CUTTIES HILLOCK SANDSTONE
Stratotypes:
Type Area  Coastal section from Covesea Skerries Lighthouse to Cummingstown, Moray. 
Reference Section  Borehole record from Clarkly Hill (No. 1) Borehole (Geological Survey). Depth from surface 347 - 438 feet. 
Reference(s):
Warrington, G, Audley-Charles, M G, Elliott, R E, Evans, W B, Ivimey-Cook, H C, Kent, P E, Robinson, P L, Shotton, F W, and Taylor, F M. 1980. A correlation of the Triassic rocks in the British Isles. Special Report of the Geological Society of London, No.13. 
Peacock, J D, Berridge, N G, Harris, A L and May, F. 1968. The geology of the Elgin District. Memoir of the Geological Survey, Scotland. 
Frostick, L, Reid, I, Jarvis, J and Eardley, H. 1988. Triassic sediments of the Inner Moray Firth, Scotland: early rift deposits. Journal of the Geological Society (London), Vol. 145, p. 235 - 248. 
Westoll, T S. 1951. The vertebrate-bearing strata of Scotland. 18th International Geological Congress, London, 1948, Vol. 9, p. 5 - 21. 
Stephenson, D and Gould, D , 1995. British Regional Geology: the Grampian Highlands (4th edition). (London: HMSO for the British Geological Survey), 67-68. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S095