The BGS Lexicon of Named Rock Units — Result Details
Whitcliffe Formation
| Computer Code: | WHIT | Preferred Map Code: | Wc |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Ludfordian Age (SD) — Ludfordian Age (SD) | ||
| Lithological Description: | Grey to greenish grey, flaggy calcareous siltstone with shelly limestone beds (at Ludlow); upward passage from argillaceous, flaggy limestone to olive-buff shaly mudstone overlain by buff silty sandstone and mudstone (South Staffordshire). | ||
| Definition of Lower Boundary: | Above lithological change from limestone to calcareous siltstone (at Ludlow) (Holland and others 1963); Top of highest nodular limestone of Aymestry limestone. (South Staffordshire) | ||
| Definition of Upper Boundary: | Base of cross bedded sandstone of Downton Castle Sandstone; locally at base of Ludlow Bone Bed. | ||
| Thickness: | 9-55m: 9-15m South Staffordshire; 55m Ludlow. | ||
| Geographical Limits: | West Midlands and Welsh Borders. | ||
| Parent Unit: | Not Entered (?) | ||
| Previous Name(s): | Whitcliffe Beds [Obsolete Name And Code: Use WHIT]
(WHB)
Whitcliffe Group [Obsolete Name and Code: Use WHIT] (-4971) Upper Ludlow Shales [Obsolete Name and Code: Use ULUS, ULU, WHIT] (-3744) Lower and Upper Whitcliffe Beds [Obsolete Name and Code: Use WHIT] (-1915) Upper and Lower Whitcliffe Formations [Obsolete Name and Code: Use WHIT] (-1916) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Partial Type Section | [Holland, Lawson and Walmsley, 1963, locality 3] SW (right) bank River Teme, cliff section 170m south of Dinham Bridge. | ||
| Partial Type Section | [White and Lawson, 1978, locality 839] Deer Park road section, Mortimer Forest. | ||
| Reference Section | [Whitehead and Pocock, 1947, p.17-18] Mineral railway cutting, adjacent to Lodge Farm Reservoir, Saltwells. | ||
| Partial Type Section | [Holland, Lawson and Walmsley, locality 7] Whitcliffe Road (`Ludford Lane') section exposing uppermost strata below the Ludlow Bone Bed. | ||
| Reference Section | [Holland, Lawson and Walmsley, 1963, locality 6] Old quarry face, south (right) bank of River Teme, 260m west of Ludford Bridge. | ||
| Reference(s): | |||
| Holland, C H, Lawson, J D and Walmsley, V G, 1959. A revised classification of the Ludlovian succession at Ludlow. Nature, London, 1037-1039. | |||
| Holland, C H, Lawson, J D, Walmsley, V G and White, D E. 1980. Ludlow stages. Silurian Series and stages decisions concerning chronostratigraphy. Lethaia, Vol.13, p.238, 268. | |||
| Whitehead, T H and Pocock, R W. 1947. Geology of the country around Dudley and Bridgnorth. Memoir of the British Geological Survey, Sheet 167. (England and Wales). | |||
| Whitehead, T H and Eastwood, T, 1927. The geology of the southern part of the South Staffordshire Coalfield. Memoir of the Geological Survey of Great Britain. | |||
| Holland, C H, Lawson, J D and Walmsley, V G, 1963. The Silurian Rocks of the Ludlow District, Shropshire. Bulletin of the British Museum (Natural History), Geology Series. (London: British Museum (Natural History)). 93-171. | |||
| Cocks, L R M, Holland, C H and Rickards, B. 1992. A revised correlation of Silurian rocks in the British Isles. Geological Society of London Special Report. No.21, 32pp. | |||
| Lawson, J D and White, D E, 1989. The Ludlow Series in the Ludlow area, 73-90 in A global standard for the Silurian system. Holland, C H and Bassett, M G (editors). (Cardiff: National Museum of Wales). | |||
| Cocks, L R M, Holland, C H, Rickards, R B and Strachan, I, 1971. A correlation of Silurian rocks in the British Isles. Geological Society of London, Special Report No.1. | |||
| White, D E and Lawson, J D, 1978. The stratigraphy of new sections in the Ludlow Series of the type area, Ludlow, Salop, England. Report of the Institute of Geological Science, 78/30, 1-10. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| E168 E181 | |||