The BGS Lexicon of Named Rock Units — Result Details
Cleeve Cloud Member
| Computer Code: | CLCL | Preferred Map Code: | ClC |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Aalenian Age (JA) — Aalenian Age (JA) | ||
| Lithological Description: | Off-white to pale brown well-sorted medium-, coarse- and very coarse-grained oolite grainstone, well bedded and cross-bedded; burrowed and sparsely shell-detrital in parts, locally (in east and north) yellowish and sandy.Locally highly shell detrital in lower part. | ||
| Definition of Lower Boundary: | Upward change from pisoidal limestones (Crickley Member) or ferruginous, sandy, muddy limestone (Leckhampton Member) into limestone as described in lithology. | ||
| Definition of Upper Boundary: | Limestone as described in lithology with sharp top, commonly a hardground, overlain by Scottsquar Member or hardground overlain by Salperton Limestone Formation. | ||
| Thickness: | Type section (Leckhampton Hill); c.25m. Maximum; 51m (British Geological Survey Cleeve Common Borehole) (Barron, A J M, 1999). | ||
| Geographical Limits: | Mid and north Cotswolds: north of Horton, south Gloucestershire, and west of Fairford, Stow-on-the-Wold and Moreton-in-Marsh, Gloucestershire (Barron, A J M, et al, 1997, fig.4). | ||
| Parent Unit: | Birdlip Limestone Formation (BLPL) | ||
| Previous Name(s): | Part of Pea Grit Series [Obsolete Name and Code: Use CLCL]
(-2093)
Yellow Stone [Obsolete Name and Code: Use CLCL] (-2094) Lower Freestones [Obsolete Name And Code: See CLCL] (LFR) Devil's Chimney Oolite and Fiddler's Elbow Limestone [Obsolete Name and Code: Use CLCL] (-2704) Pea Grit Equivalent [Obsolete Name and Code: Use CLCL] (-2705) Crickley Member (CRKY) Jackdaw Quarry Oolite (-787) Yellow Guiting Stone (-788) Devil's Chimney Oolite and Cleeve Hill Oolite [Obsolete Name and Code: Use CLCL] (-3936) Frocester Hill Oolite and Selsey Hill Oolite [Obsolete Name and Code: Use CRKY, CLCL] (-3937) Crickley Member (CRKY) White Guiting Stone [Obsolete Name and Code: Use CLCL] (-4547) Devil's Chimney Oolite [Obsolete Name and Code: Use CLCL] (-131) Lower Freestone [Obsolete Name and Code: Use CLCL] (-132) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Reference Section | Disused quarries, Cleeve Cloud, Cleeve Common SSSI, Cheltenham, Gloucestershire. Richardson, L, 1929; Mudge, D C, 1978a, 1978b; Barron, A J M, 1999; Cox, B M, and Sumbler, M G. 2002. For further reference sections see Barron, A J M, et al, 1997. | ||
| Type Area | Cotswold Hills, Gloucestershire. | ||
| Type Section | Limekiln Quarry and Devil's Chimney Quarry, Leckhampton Hill SSSI, Cheltenham; beds 39 to 57 of Mudge, D C, 1978b. See also other references. See also Brodie, P B, 1850, 1851; Wright, T, 1860; Woodward, H B, 1894; Richardson, L, 1904, 1906; Murray, J W, 1968; Ager, D V, 1969; Mudge, D C, 1995; Sumbler, M G and Barron, A J M, 1996; Cox, B M, and Sumbler, M G. 2002. | ||
| Reference(s): | |||
| Brodie, P B. 1850. On certain beds in the Inferior Oolite, near Cheltenham. Quarterly Journal of the Geological Society of London, Vol. 6, 239-249. | |||
| Richardson, L. 1933. The Country around Cirencester. Memoir of the Geological Survey of Great Britain, Sheet 235 (England and Wales). | |||
| Richardson, L. 1929. The Country around Moreton in Marsh. Memoir of the Geological Survey of Great Britain, Sheet 217 (England and Wales). | |||
| Hull, E, 1857. The geology of the country around Cheltenham. Memoir of the Geological Survey of Great Britain. Old Series Sheet 44. | |||
| Barron, A J M. 1999. Geology of the Bishop's Cleeve area (1:10 000 Sheet SO92NE). British Geological Survey Technical Report WA/99/01. | |||
| 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. | |||
| Murray, J W, 1968. The Inferior Oolite of the Cotswold scarp, Wotton-under-Edge to Leckhampton. Proceedings of the Bristol Naturalists' Society, Vol.31, 535-549. | |||
| Barron, A J M, Sumbler, M G and Morigi, A N. 1997. A revised lithostratigraphy for the Inferior Oolite Group (Middle Jurassic) of the Cotswolds, England. Proceedings of the Geologists' Association, Vol. 108, 269-285. | |||
| Richardson, L, 1906. Half-day excursion to Leckhampton Hill, Cheltenham. Proceedings of the Cotswold Naturalists' Field Club, Vol.15, 182-189. | |||
| Sumbler, M G and Barron, A J M, 1996. Day Excursion to the Cotswolds. Mercian Geologist, Vol.14, 34-37. | |||
| Mudge, D C, 1978. Stratigraphy and sedimentation of the Lower Inferior Oolite of the Cotswolds. Journal of the Geological Society of London, Vol.135, 611-627. | |||
| 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). | |||
| Wright, T, 1860. On the subdivisions of the Inferior Oolite of the south of England, compared with the equivalent beds of that formation on the Yorkshire coast. Quarterly Journal of the Geological Society of London, 16, 1-48. | |||
| Ager, D V. 1969. The Lower and Middle Jurassic rocks of the Cotswold Escarpment and the Vale of Worcester. B27-B43 in Guide for north Somerset and Gloucestershire. Torrens, H S (editor). International field symposium on the British Jurassic, Excursion No. 2. | |||
| Brodie, P B. 1851. On the basement beds of the Inferior Oolite in Gloucestershire. Quarterly Journal of the Geological Society of London, Vol. 7, 208-212. | |||
| Mudge, D C, 1995. The Middle Jurassic of the Cotswolds. In (Taylor, P D; ed). Field Geology of the British Jurassic. Geological Society, London, 31-50. | |||
| Richardson, L, 1904. Handbook to the geology of Cheltenham and neighbourhood (Cheltenham: Norman, Sawyer and Co). | |||
| Cox, B M, and Sumbler, M G. 2002. British Middle Jurassic Stratigraphy. Geological Conservation Review Series No.26. [Peterborough: Joint Nature Conservation Committee.] | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| E235 E217 | |||