The BGS Lexicon of Named Rock Units — Result Details

Pipe Rock Member

Computer Code: PPR Preferred Map Code: notEntered
Status Code: Full
Age range: Comley Series (EC) — Comley Series (EC)
Lithological Description: Mature bioturbated, predominantly white quartz arenite with Skolithos burrows.
Definition of Lower Boundary: Conformable and gradational boundary with underlying Basal Quartzite Member.
Definition of Upper Boundary: Defined at the distinct boundary with the overlying Fucoid Beds Member of the An t-Sron Formation.
Thickness: 75 m - 100 m thick.
Geographical Limits: The Eriboll Formation (including the Pipe Rock Member) forms a narrow belt, extending along the north-western side of Scotland from the Durness-Eriboll area, through Assynt, Dundonnell, Kinlochewe and Kishorn, to Skye.
Parent Unit: Eriboll Formation (ERSA)
Previous Name(s): Pipe Rock Formation (-467)
Pipe Rock (-1768)
Upper Quartzite Pipe-Rock Or Piped Quartzite (-1769)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Reference Section  Skiag Bridge by Loch Assynt displays a good reference section through the Pipe Rock Member, and shows excellent examples of Skolithos 'pipes'. Peach et al., (1907) Johnson and Parsons (2000) 
Reference Section  East and west shores of Loch Eriboll, Durness area, north coast of Scotland. Grid references refer to section along eastern shore of Loch. Prigmore and Rushton , 1999. 
Reference(s):
Holland, C H (Editor). Lower Palaeozoic Rocks of the World, Vol.2. (John Wiley & Sons.) 
Johnson M R W and Parsons, I. 2000. Macgregor and Phemister's geological excursion guide to the Assynt district of Scotland. (Edinburgh Geological Society.) 
Phemister, J. 1948. British Regional Geology: Scotland: the Northern Highlands (2nd edition) (Edinburgh: HSMO for the Geological Survey and Museum.) 
Wright, D T and Knight, I. 1995. A revised chronostratigraphy for the lower Durness Group. Scottish Journal of Geology, Vol. 31, 11-22. 
Lapworth, C. 1883. The secret of the Highlands. Geolgical Magazine, Decade 2, Vol. 10, 120-128, 193-199, 337-344. 
Park, E G, Stewart, A D and Wright, D T. 2002. The Hebredean Terrane. 45-80 in the Geology of Scotland. Trewin, N H (Editor). (The Geological Society, London.) 
Prigmore, J K and Rushton, A W A. 1999. Scotland: Cambrian and Ordovician of the Hebridean Terrane. 295-315 in British Cambrian to Ordovician Stratigraphy. Rushton, A W A, Owen, A W, Owens, R M and Prigmore, J K (editors). Geological Conservation Review Series. (Joint Nature Conservation Committee.) 
Peach, B N, Home, J, Gunn, W, Clough, C T and Hinxman, L W, 1907. The Geological Structure of the northwest Highlands of Scotland. Memoir of the Geological Survey of Great Britain. 
Cowie, J W. 1974. The Cambrian of Spitsbergen and Scotland. 123-155 in Cambrian of the British Isles, Norden and Spitsbergen, Holland, C H (editor). Lower Palaeozoic Rocks of the World, Vol. 2. (John Wiley and Sons.) 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S114 S071 S107 S108 S081 S082 S092 S092 S101 S102