The BGS Lexicon of Named Rock Units — Result Details

Gutterfoot Sand Member

Computer Code: GFSA Preferred Map Code: notEntered
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 (-122)
St Bees Till (-3430)
Alternative Name(s): none recorded or not applicable
Stratotypes:
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. 
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(s):
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. 
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.] 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable