The BGS Lexicon of Named Rock Units — Result Details
Gutterfoot Sand Member
Computer Code: | GFSA | Preferred Map Code: | notEntered |
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Status Code: | Full | ||
Age range: | Devensian Stage (QD) — Devensian Stage (QD) | ||
Lithological Description: | A coarsening-upwards sequence of yellowish brown clayey silt ad silty clay, passing upwards into silty fine-grained sand and finally into fine- and medium-grained sand. | ||
Definition of Lower Boundary: | Gradational on underlying St Bees Till Member. | ||
Definition of Upper Boundary: | Unconformabley overlain by younger deposits including the reddish-brown thinly nterbedded sand, sandy silt and diamicton of the Peckmill Sand Member, How Man Till Member, and the trough cross-bedded sand and gravel of the Peel Place Sands and Gravel Member (of the Gosforth Glacigrnic Formation). | ||
Thickness: | About 8 to 12m thick | ||
Geographical Limits: | 1:50k Sheets 37 Gosforth and 38 Whitehaven, western Cumbria. | ||
Parent Unit: | Gosforth Glacigenic Formation (GOGL) | ||
Previous Name(s): | Middle Sands and Gravels [Obsolete Name and Code: Use GFSA, SEAG, CGWD, LOGG, PLSG, PFS, EVSI, THBG, EVSG]
(-122)
St Bees Till [Obsolete Name and Code: Use GFSA, STBT] (-3430) Middle Sands and Gravels [Obsolete Name and Code: Use GFSA, SEAG, CGWD, LOGG, PLSG, PFS, EVSI, THBG, EVSG] (-122) |
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Alternative Name(s): | none recorded or not applicable | ||
Stratotypes: | |||
Type Section | Cliff section between 400-500m north of the footbridge at Sea Mill, St Bees, west Cumbria. BGS/Nirex Log NX91SE ME7. Nirex Science Report SA/97/045 (Issue 2.0). 1997. | ||
Reference Section | Sea cliff section at Warborough Nook, c.700m south of Braystones, west Cumbria. BGS/Nirex Log NY00NW ME18. Nirex Science Report 768. 1995. | ||
Reference(s): | |||
Merritt, J W and Auton, C A. 1997. Quaternary lithostratigraphy of the Sellafield district. Nirex Science Report SA/97/045 (Issue 2.0). [Report prepared for UK Nirex Ltd. 69pp, 5 tables, 20 figures, 14 enclosures and one appendix.] | |||
Eastwood T, and others. 1968. Geology of the country around Whitehaven. Memoir of the Geological Survey of Great Britain, Sheet 28 (England and Wales). | |||
Huddart, D and Tooley, M J. 1972. The Cumberland Lowland field trip handbook. [Cambridge: Quaternary Research Association.] | |||
Huddart, D. 1991. The glacial history and glacial deposits of the north and west Cumbrian lowlands, 151-167 in Ehlers, J, Gibbard, P L and Rose, J (editors), Glacial deposits in Great Britain and Ireland. [London: Balkema.] | |||
Merritt, J W, Auton, C A, Browne, M A E, Neilson, G and McMillan, A A. 1995. Characterisation of the onshore Quaternary deposits around Sellafield, Cumbria, Phase II. Nirex Science Report 768. | |||
1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
none recorded or not applicable |