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 Cutties Hillock (Quarry Wood) (-4710)
Sandstones Of Hopeman (-1597)
Alternative Name(s): Cutties Hillock Sandstone
Hopeman-Cummingstown Sandstone
Stratotypes:
Type Area  Coastal section from Covesea Skerries Lighthouse to Cummingstown, Moray. Peacock, et al. 1968. 
Reference Section  Borehole record from Clarkly Hill (No. 1) Borehole (Geological Survey). Depth from surface 347 - 438 feet. Peacock, et al. 1968. 
Reference(s):
Westoll, T S. 1951. The vertebrate-bearing strata of Scotland. 18th International Geological Congress, London, 1948, Vol. 9, p. 5-21. 
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. 
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, 235-248. 
Peacock, J D, Berridge, N G, Harris, A L, May, F. 1968. The geology of the Elgin District. Memoir of the Geological Survey of Scotland. Sheets 86 and 96 (Scotland). (Edinburgh: HMSO). 
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