The BGS Lexicon of Named Rock Units — Result Details

Manse Gelifluctate Bed

Computer Code: MANSE Preferred Map Code: notEntered
Status Code: Full
Age range: Devensian Stage (QD) — Devensian Stage (QD)
Lithological Description: Gravel with some sand and diamicton. Crudely bedded, pale olive-brown and pale pinkish brown, pebble to boulder gravel-grade, clast supported with a matrix of medium to coarse quartzose and felsitic sand. Clasts are typically angular to subangular and dominated by felsite. Less common clast lithologies include psammitic and quartzitic metasedimentary rocks, grey granite, mafic igneous rocks, red stained quartzite and pelitic metasedimentary rocks. Some thin sand beds and thin beds of brown gravelly clayey sand, diamicton. Close to the present ground surface frost shattered and erected clasts, poorly developed involutions and ice wedge clasts have been observed. Interpreted as periglacial gelifluctate deposits.
Definition of Lower Boundary: The basal boundary of the bed is a planar, subhorizontal, unconformity resting on either the Hythie Till or Rottenhill Till formations in Kirkhill Quarry. In Leys Quarry the periglacial sediments and structures of this bed merge downward into (and are in part derived from) the red, felsitic Denend Gravel Formation where this is exposed near to the surface due to later erosion.
Definition of Upper Boundary: The upper boundary of the bed is generally the present ground surface.
Thickness: To 2m
Geographical Limits: Buchan, northeast Scotland. The bed is only known within the immediate vicinity of Kirkhill Quarry (infilled) (centred on NK 0120 5285) and Leys Quarry (disused) (centred on NK 0040 5250) on Sheet 87W (Ellon).
Parent Unit: Hythie Till Formation (HYTIL)
Previous Name(s): Kirkhill Gelifluctate 5 (-3547)
Manse Gelifluctate Bed (MANSE)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Partial Type Section  Southwest face, Leys Quarry (disused), 6.5km southeast of Stricken, Buchan, northeast Scotland. Hall and Jarvis. 1993. 
Partial Type Section  West face, Kirkhill Quarry (infilled), 7km southeast of Stricken, Buchan, northeast Scotland. Connell and Hall. 1987. 
Reference(s):
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, Connell, E R and Bridgland, D R (editors). 2000. The Quaternary of the Banffshire Coast and Buchan; Field Guide. (London: Quaternary Research Association.) 
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.) 
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 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.) 
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. 
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) 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable