The BGS Lexicon of Named Rock Units — Result Details

Deerhope Formation

Computer Code: DHP Preferred Map Code: DHP
Status Code: Full
Age range: Telychian Age (ST) — Telychian Age (ST)
Lithological Description: Laminated fossiliferous siltstones, mudstones and shales, no sediment coarser than siltstone, bioturbation common in fine-grained sediment. Fossils include rugose corals, brachiopods, bivalves, trilobites and pelmatozoans.
Definition of Lower Boundary: Conformable: at grey shales overlying highest Reservoir Formation, sandy siltstone.
Definition of Upper Boundary: Conformable: red shales immediately underlying lowest Cock Rig Formation, medium-grained sandstones.
Thickness: 390m in North Esk Inlier
Geographical Limits: Pentland Hills, Midland Valley.
Parent Unit: North Esk Group (NSK)
Previous Name(s): Upper Part Of Beds At B (-1500)
Upper Part Of Reservoir Beds And Deerhope Burn Flagstones (-1501)
Deerhope Burn Flagstones [Obsolete Name And Code: Use DHP] (DHPF)
Deerhope Siltstones [Obsolete Name And Code: Use DHP] (DHPS)
Upper Part Of Bed B (-210)
Upper Part Of Reservoir Formation And Lower Part Of Deerhope Formation (-3360)
Upper Part Of Bed A (-2151)
Alternative Name(s): none recorded or not applicable
Reference Section  North Esk river, 500m upstream of reservoir. 
Type Section  Deerhope Burn, 700-1000m west of North Esk river. 
Partial Type Section  North Esk river, 130m upstream of North Esk Reservoir. Boundary of Reservoir Formation and Deerhope Formation. 
Peach, B N and Horne, J. 1899. The Silurian Rocks of Britain, Volume 1. Scotland. Memoir of the Geological Survey of the United Kingdom. 
Lamont, A, 1952. Ecology and correlation of the Pentlandian - a new division of the Silurian System in Scotland. 27-32 in Faunal and floral facies and zonal correlation. Dighton-Thomas, H (editor). Report of the 18th Session of the International Geological Congress, Great Britain, 1948, Pt.10. 
Robertson, G, 1986. North Esk Inlier. 174-185 in Lothian Geology. An Excursion Guide. McAdam, A D and Clarkson, E N K (editors). [Edinburgh: Scottish Academic Press.] 
Tipper, J C, 1976. The stratigraphy of the North Esk Inlier. Scottish Journal of Geology, Vol.12, Pt, 15-22. 
Henderson, J and Brown, D J, 1870. On the Silurian rocks of the Pentland Hills. Transactions of the Edinburgh Geological Society, Vol.1, 266-272. 
Robertson, G, 1989. A palaeoenvironmental interpretation of the Silurian rocks in the Pentland Hills, near Edinburgh, Scotland. Transactions of the Royal Society of Edinburgh: Earth Sciences, Vol.80, 127-141. 
Howell, H H and Geikie, A, 1861. The Geology of the neighbourhood of Edinburgh (1st edition). Memoir of the Geological Survey, Scotland. 
Mitchell, G H. 1962. The geology of the neighbourhood of Edinburgh. (Explanation of Sheet 32) Third Edition. (Reprinted 1980). Memoir of the Geological Survey of Great Britain (Scotland). 
1:50K maps on which the lithostratigraphical unit is found, and map code used: