The BGS Lexicon of Named Rock Units — Result Details

Reservoir Formation

Computer Code: RSVR Preferred Map Code: RSVR
Status Code: Full
Age range: Telychian Age (ST) — Telychian Age (ST)
Lithological Description: Mudstones and shales interbedded with siltstones and fine-grained sandstones.
Definition of Lower Boundary: Not exposed.
Definition of Upper Boundary: Conformable below Deerhope Formation: at top of highest sandy siltstone bed showing internal structures typical of Bouma sequence.
Thickness: At least 1080m in North Esk Inlier. c.800m exposed in Bavelaw Castle Inlier.
Geographical Limits: Pentland Hills, Midland Valley.
Parent Unit: North Esk Group (NSK)
Previous Name(s): Reservoir Formation (RSVR)
Bed A and lower part of Bed B (-4306)
Bed A, Excluding Upper Part (-1150)
Reservoir Beds [Obsolete Name And Code: See RSVR] (RVRB)
Beds At A, A1 And Lower Part Of B (-1797)
Reservoir Formation [Obsolete Code: See RSVR] (RVF)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Reference Section  Gutterford Burn, from entry into North Esk Reservoir to 1200m upstream. 
Reference Section  Cliff, 400m SW of W end of Loganlee Reservoir, Loganlee Inlier, Pentland Hills. 
Type Section  North Esk River and Reservoir shore, North Esk Inlier, Pentland Hills. 
Reference(s):
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). 
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. 
Tipper, J C, 1976. The stratigraphy of the North Esk Inlier. Scottish Journal of Geology, Vol.12, Pt, 15-22. 
Peach, B N and Horne, J. 1899. The Silurian Rocks of Britain, Volume 1. Scotland. Memoir of the Geological Survey of the United Kingdom. 
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. 
Howell, H H and Geikie, A, 1861. The Geology of the neighbourhood of Edinburgh (1st edition). Memoir of the Geological Survey, Scotland. 
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. 
Bull, E, 1987. Upper Llandovery Dendroid Graptolites from the Pentland Hills, Scotland. Palaeontology, Vol.30, Pt.1, 17-20. 
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.] 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S032 S032