The BGS Lexicon of Named Rock Units — Result Details

Hollygate Sandstone Member [Obsolete Name And Code: Use AS]

Computer Code: HLY Preferred Map Code: Hly
Status Code: Index Level
Age range: Carnian Age (TC) — Carnian Age (TC)
Lithological Description: Sandstone, buff-grey or greenish grey, fine- to medium-grained interbedded with mudstone and siltstone, reddish brown and greenish grey.
Definition of Lower Boundary: Gradational upward passage from un-named siltstone in Edwalton Formation to medium-grained sandstone.
Definition of Upper Boundary: Gradational into mudstone of the overlying Cropwell Bishop Formation; taken at the top of the highest significant sandstone bed.
Thickness: 0-8m (6.2m in the Cropwell Bridge Borehole, SK63NE/28).
Geographical Limits: Mappable at surface in south Nottinghamshire, not traced north of Newark. Probably equivalent to the Dane Hills Sandstone Member of Leicestershire, and Arden Sandstone of the central Midlands and the Worcester Basin.
Parent Unit: Not Applicable (-)
Previous Name(s): Hollygate Skerry (-3805)
Hollygate Lane Skerries (-3470)
Hollygate Skerries (-2241)
Hollygate Skerry Member (-2242)
Alternative Name(s): Dane Hills Sandstone Member
Arden Sandstone
Stratotypes:
Type Section  Cropwell Bridge Borehole (SK63NE/28), Cropwell Bishop, Notts.; depth range 35.8m-42.0m. Curated core held at BGS Keyworth. 
Reference Section  Fulbeck 1 Borehole (SK85SE/25), Fulbeck, Lincs.; depth range 156.1m-158.8m 
Reference(s):
Warrington, G, Audley-Charles, M G, Elliott, R E, Evans, W B, Ivimey-Cook, H C, Kent, P E, Robinson, P L, Shotton, F W and Taylor, F M. 1980. A correlation of the Triassic rocks in the British Isles. Special Report of the Geological Society of London, No.13. 
Elliott, R E 1961. The stratigraphy of the Keuper Series in southern Notinghamshire. Proceedings of the Yorkshire Geological Society, Vol.33, 197-231. 
Howard, A S, Warrington, G, Ambrose, K, and Rees, J G. 2008. A formational framework for the Mercia Mudstone Group (Triassic) of England and Wales. British Geological Survey Research Report, RR/08/04. 
Charsley, T J, Rathbone, P A and Lowe, D J, 1990. Nottingham: A geological background for planning and development. British Geological Survey Technical Report WA/90/1. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E126 E142 E141