The BGS Lexicon of Named Rock Units — Result Details
Broubster Till Member
Computer Code: | BRBU | Preferred Map Code: | symb |
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Status Code: | Full | ||
Age range: | Devensian Stage (QD) — Devensian Stage (QD) | ||
Lithological Description: | Diamicton, clayey and sandy, typically reddish brown to moderate brown, with clasts of Orcadian Devonian sandstones, conglomerates, siltstones and mudstones, some Caledonian igneous and Moine metamorphic rocks. | ||
Definition of Lower Boundary: | Unconformable on bedrock. | ||
Definition of Upper Boundary: | Holocene strata. | ||
Thickness: | Up to 10 m thick. | ||
Geographical Limits: | Caithness and Sutherland, mainly east of a line between Reay and Berridale (1:50 000 sheets 115 E and W, and sheet 110). | ||
Parent Unit: | Reay Burn Till Formation (REBU) | ||
Previous Name(s): | Reay Till [Obsolete Name and Code: Use BRBU, REBU]
(-4489)
Reddish brown ground morraine [Obsolete Name and Code: Use BRBU] (-3237) |
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Alternative Name(s): | none recorded or not applicable | ||
Stratotypes: | |||
Type Section | Trial pit CA 1428/SP1 on south-east side of a forestry track, eastern side of Loch Saorach, Caithness. Auton, C A, Entwisle, D C and Golledge, N R. 2001. Dounreay catchment Quaternary Characterisation study: final interpretation report. British Geological Survey commissioned Report, CR/01/116. 122pp. | ||
Reference Section | Registered field record CA 1409: Cliff section,eastern side of Sandside Bay, about 200 m north of the mouth of the Burn of Isauld. | ||
Reference(s): | |||
Omand, D. 1973. The glaciation of Caithness. Unpublished MSc Thesis, University of Strathclyde. | |||
Auton, C A, Entwisle, D C, and Golledge, N R. 2001. Dounreay catchment Quaternary Characterisation study: final interpretation report. British Geological Survey commissioned Report CR/01/116. 122pp. | |||
Peach, B N and Horne, J, 1881. The glaciation of Caithness. Proceedings of the Royal Physical Society of Edinburgh, Vol. 6, p.316-352. | |||
1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
S116 S110 |