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 [Obsolete Name and Code: Use PPR]
(-467)
Pipe Rock [Obsolete Name and Code: Use PPR] (-1768) Upper Quartzite Pipe-Rock or Piped Quartzite [Obsolete Name and Code: Use PPR] (-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): | |||
| Lapworth, C. 1883. The secret of the Highlands. Geological Magazine, Decade 2, Vol. 10, 120-128, 193-199, 337-344. | |||
| 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. | |||
| 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.) | |||
| 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. | |||
| 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.) | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| S114 S071 S107 S108 S081 S082 S092 S092 S101 S102 | |||