The BGS Lexicon of Named Rock Units — Result Details
Hollygate Sandstone Member [Obsolete: use AS]
| Computer Code: | HLY | Preferred Map Code: | Hly |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Carnian Age (TC) — Carnian Age (TC) | ||
| Lithological Description: | [Obsolete: use AS] 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: | none recorded or not applicable | ||
| Previous Name(s): | Hollygate Skerries [Obsolete Name and Code: Use HLY]
(-2241)
Hollygate Skerry Member [Obsolete Name and Code: Use HLY] (-2242) Hollygate Skerry [Obsolete Name and Code: Use AS, HLY] (-3805) Hollygate Lane Skerries [Obsolete Name and Code: Use HLY] (-3470) |
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| Alternative Name(s): | Dane Hills Sandstone Member [Obsolete: use AS] Arden Sandstone [Obsolete: use AS] |
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| Stratotypes: | |||
| Reference Section | Fulbeck 1 Borehole (SK85SE/25), Fulbeck, Lincs.; depth range 156.1m-158.8m | ||
| Type Section | Cropwell Bridge Borehole (SK63NE/28), Cropwell Bishop, Notts.; depth range 35.8m-42.0m. Curated core held at BGS Keyworth. | ||
| Reference(s): | |||
| 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. | |||
| 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. | |||
| 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 | |||