The BGS Lexicon of Named Rock Units — Result Details
Eyford Member
| Computer Code: | EYF | Preferred Map Code: | Ey |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Bathonian Age (JN) — Bathonian Age (JN) | ||
| Lithological Description: | Pale grey, fissile, finely ooidal grainstone interbedded with grey, laminated fissile calcareous sandstone, locally decalcified to loose orange-brown sand, with minor beds of shelly and shell-fragmental limestone, marl or fissile mudstone. | ||
| Definition of Lower Boundary: | Base of limestone/sandstones as described in lithology, resting on fissile mudstone of underlying un-named unit of Fuller's Earth Formation. | ||
| Definition of Upper Boundary: | Sharp generally erosive base of coarse-grained ooidal grainstone of Taynton Limestone Formation. | ||
| Thickness: | 0 to 7 m; 6 to 7 m in type section. | ||
| Geographical Limits: | Chedworth area, Gloucestershire (where it passes westwards into mudstone of the Fuller's Earth), eastwards to the Burford area, Oxon (where it passes into the Charlbury Formation). | ||
| Parent Unit: | Fuller's Earth Formation (FE) | ||
| Previous Name(s): | Cotswold Slates
(-898)
Stonesfield Slate Series (-899) Eyford Sandstone Member [Obsolete Name and Code: Use EYF] (-2179) Stonesfield Slate (SSL) Stonesfield Slate (SSL) Stonesfield Beds [Obsolete Name and Code: Use EYF] (-1536) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Area | North Cotswolds, west of Stow-on the Wold (Sevenhampton-Naunton-Condicote area). Richardson, 1929. | ||
| Type Section | Huntsman's Quarry SSSI. Richardson, 1929; Ager, et al., 1973; Cox, and Sumbler, 2002. | ||
| Reference Section | Hampen Railway Cutting. Barron, 1998. | ||
| Reference(s): | |||
| Cox, B M, and Sumbler, M G. 2002. British Middle Jurassic Stratigraphy. Geological Conservation Review Series No.26. [Peterborough: Joint Nature Conservation Committee.] | |||
| Barron, A J M, Lott, G K, and Riding, J B. 2012. Stratigraphical framework for the Middle Jurassic strata of Great Britain and the adjoining continental shelf. British Geological Survey Research Report RR/11/06. | |||
| Sumbler, M G, Barron, A J M and Morigi, A N, 2000. Geology of the Cirencester district. Memoir of the British Geological Survey, Sheet 235 (England and Wales). | |||
| Arkell, W J. 1933. The Jurassic System in Great Britain (Oxford: Clarendon Press.) | |||
| Woodward, H B, 1894. The Jurassic Rocks of Britain, Vol.4. The Lower Oolitic Rocks of England (Yorkshire excepted). Memoir of the Geological Survey of the United Kingdom. | |||
| Ager, D V, Donovan, D T, Kennedy, W J, McKerrow, W S, Mudge, D C, and Sellwood, B W. 1973. The Cotswold Hills. Geologists' Association Guide. No. 36. (Colchester: Benham and Co.) | |||
| Wyatt, R J. 1996. A correlation of the Bathonian (Middle Jurassic) succession between Bath and Burford, and its relation to that near Oxford. Proceedings of the Geologists' Association, Vol. 107, 299-322. | |||
| Richardson, L. 1929. The Country around Moreton in Marsh. Memoir of the Geological Survey of Great Britain, Sheet 217 (England and Wales). | |||
| Barron, A J M. 1998. Geology of the Hawling area: 1:10 000 Sheet SP02SE. British Geological Survey Technical Report WA/98/26. | |||
| Sellwood, B W and Mc Kerrow, W S. 1974. Depositional environments in the lower part of the Great Oolite Group of Oxfordshire and north Gloucestershire. Proceedings of the Geologists' Association, Vol.85, 189-210. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| E235 E217 | |||