The BGS Lexicon of Named Rock Units — Result Details

Corsend Gelifluctate Bed

Computer Code: CSEND Preferred Map Code: notEntered
Status Code: Full
Age range: Devensian Stage (QD) — Devensian Stage (QD)
Lithological Description: Gravelly sandy silt diamicton. Crudely bedded, brown, matrix supported, non-calcareous. Clasts are typically angular to subangular. Clast lithologies are dominated by felsite with lesser amounts of quartzitic and psammitic metasediments, basic igneous rocks, red stained quartzites, red-brown sandstone, grey granite and pelitic metasediments. In thin section silt droplet fabrics have been recorded indicating incipient pedogenesis under cold climate conditions. A truncated ice-wedge cast has also been recorded descending from the upper surface of this deposit into the Rottenhill Till Formation beneath. Interpreted as a periglacial gelifluctate.
Definition of Lower Boundary: The lower boundary of the bed is a planar, subhorizontal erosion surface truncating weathered diamicton of the Fernieslack Palaeosol Bed/Rottenhill Till Formation.
Definition of Upper Boundary: The upper boundary of the bed is a planar, subhorizontal erosion surface overlain either by black clayey diamicton of the Corse Diamicton Formation or brown diamicton of the Hythie Till Formation.
Thickness: To 0.80m
Geographical Limits: Buchan, northeast Scotland. The bed is only known within the immediate vicinity of Kirkhill Quarry (infilled) (centred on NK 0120 5285) on Sheet 87W (Ellon).
Parent Unit: Rottenhill Till Formation (ROTIL)
Previous Name(s): Corsend Member, Kirkhill Formation (-2126)
Kirkhill Gelifluctate 4 (-2127)
Corsend Gelifluctate Bed (CSEND)
Kirkhill Gelifluctate Complex 3 (-4537)
Kirkhill Gelifluctate Complex 4 (-823)
Kirkhill Head 3 (-169)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Partial Type Section  East face, Kirkhill Quarry (infilled), 7km southeast of Stricken, northeast Scotland. In this face the bed is overlain by the Hythie Till Formation. Connell, Hall and Romans,. 1984. 
Partial Type Section  North face, Kirkhill Quarry (infilled,) 7km southeast of Stricken, northeast Scotland. In this face the bed is overlain by the Corse Diamicton Formation. Connell, Hall and Romans. 1984. 
Reference(s):
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 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. 
Connell, E R and Hall, A M. 2000. Kirkhill and Leys quarries. 65-67 in Merritt, J W, Connell, E R and Bridgland, D R (editors), The Quaternary of the Banffshire Coast and Buchan: Field Guide. (London: Quaternary Research Association.) 
Merritt, J W, Auton, C A, Connell, E R, Hall, A M and Peacock, J D. 2003. The Cainozoic geology and landscape evolution of north-east Scotland. Memoir of the British Geological Survey, Sheets 66E, 67, 76E, 77, 86E, 87W, 87E, 95, 96W, 96E and 97 (Scotland) 
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 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.) 
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.) 
Merritt, J W, Connell, E R and Bridgland, D R (editors). 2000. The Quaternary of the Banffshire Coast and Buchan; Field Guide. (London: Quaternary Research Association.) 
Sutherland, D G. 1999. Scotland. 99-114 in Bowen D Q (Editor), A revised correlation of Quaternary deposits in the British Isles. Special Report of The Geological Society of London, No.23. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable