The BGS Lexicon of Named Rock Units — Result Details

Leys Gravel Formation

Computer Code: LEY Preferred Map Code: LEY
Status Code: Full
Age range: Anglian Stage (QA) — Wolstonian Stage (QO)
Lithological Description: Gravel, subrounded to rounded, up to boulder sized clasts, over 90% felsite.
Definition of Lower Boundary: Unconformable on diamicton of the Leys Till Formation.
Definition of Upper Boundary: Unconformable with rubbly felsitic "head" deposit, named as the "Kirkhill Gelifluctate I" by Hall and Connell, 1986.
Thickness: c.5m
Geographical Limits: Buchan, northeast Scotland. Mapped on Sheet 87W (Ellon).
Parent Unit: East Grampian (Albion) Glacigenic Subgroup (EGAG)
Previous Name(s): Leys Lower Gravels Of Kirkhill Sequence (-4157)
Alternative Name(s): Denend Gravel Formation
Stratotypes:
Type Section  Sections in Leys Sand and Gravel Pit. Hall, A M and Connell, E R, 1991. 
Reference(s):
Connell, E R. 1984. Sandhole (Denhead) Sand Pit. 83-86 in Hall, A M (Editor), Buchan Field Guide. Quaternary Research Association, Cambridge. 
Connell, E R, Edwards, K J and Hall, A M. 1982. Evidence for two pre-Flandrian palaeosols in Buchan, Scotland. Nature, 297, 570-572. 
Connell, E R, Hall, A M and Romans, J C C. 1984. Kirkhill Quarry. 57-81 in Hall, A M (Editor), Buchan Field Guide. (Cambridge: Quaternary Research Association.) 
Hall, A M (Editor). 1984. Buchan Field Guide. Quaternary Research Association, Cambridge, 120pp. 
Hall, A M and Connell, E R. 1986. A preliminary report on the Quaternary sediments at Leys Gravel Pit at Buchan, Scotland. Quaternary Newsletter, 48, 17-28. 
Hall, A M and Connell, E R. 1991. The glacial deposits of Buchan, northeast Scotland. 129-136 in Ehlers, J, Gibbard, P L and Rose, J (editors), Glacial Deposits in Great Britain and Ireland. (Rotterdam: Balkema.) 
Connell, E R and Hall, A M. 1987. The periglacial history of Buchan, Scotland. 277-285 in Boardman, J (Editor), Periglacial Processes and Landforms in Britain and Ireland. Periglacial processes in Britain and Ireland. Cambridge University Press, Cambridge. 
Hall, A M, 1984b. Oldmill. 106 in Hall, A M (Editor), Buchan Field Guide. Quaternary Research Association, Cambridge. 
Hall, A M and Jarvis, J. 1993. Kirkhill. 225-230 in Gordon, J E and Sutherland, D G (editors), Quaternary of Scotland. Geological Conservation Review Series: 6. (London: Chapman and Hall.) 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
S087