The BGS Lexicon of Named Rock Units — Result Details
Ward's Stone Sandstone
| Computer Code: | WRST | Preferred Map Code: | WrSt |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Arnsbergian Substage (CG) — Arnsbergian Substage (CG) | ||
| Lithological Description: | Feldspathic to quartzose, coarse-grained to fine-grained sandstones, commonly with ganisters; typically fines upwards; several thin coal seams in upper part. | ||
| Definition of Lower Boundary: | Sharp, generally erosional, base on siltstones of the Roeburndale Member. | ||
| Definition of Upper Boundary: | Sharp upper boundary at base of dark grey mudstone of the Caton Shale. | ||
| Thickness: | c.15 - 200m; typically c.15 - 30m; unusually thick in Ward's Stone area. | ||
| Geographical Limits: | Lancaster Fells. Mapped but unnamed on Settle (60) and Garstang (67) sheets where included in top of Roeburndale Member (then termed Formation). | ||
| Parent Unit: | Silsden Formation (SILS) | ||
| Previous Name(s): | Caton Coal Grit [Obsolete Name and Code: Use WRST]
(-3769)
Ward's Stone Sandstone Formation [Obsolete Name and Code: Use SILS, WRST] (-3030) Roeburndale Grit [Obsolete Name And Code: RBL] (RBG) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Section | Wray Borehole (SD66NW/5) Ward's Stone Sandstone Formation between 120.45 - 42.95m depth. | ||
| Reference Section | Snab Beck, Aughton. Complete section, including upper and lower boundaries, commences 300m upstream of Snab House. | ||
| Reference Section | Raven Scar, Artle Beck, Caton. Complete section in crag exposure above Artle Beck, 500m southsoutheast of Ravenscar Farm. | ||
| Reference(s): | |||
| Brandon, A. 1992. The geology of the Caton area. British Geological Survey Technical Report WA/92/17. | |||
| Tiddeman, R H, 1891. Horizontal section, Sheet 147. Illustration of the geology of Slaidburn and Ingleton. Geological Survey of England and Wales. | |||
| Moseley, F, 1954. The Namurian of the Lancaster Fells. Quarterly Journal of the Geological Society of London, Vol.109, 423-454. | |||
| Slinger, F C, 1936. Millstone Grit and glacial geology of Caton Moor near Lancaster. Report of the British Association for the Advancement of Science, Blackpool 1936, 345. | |||
| Moseley, F, 1956. The geology of the Keasden area, west of Settle, Yorkshire. Proceedings of the Yorkshire Geological Society, Vol.30, 331-352. | |||
| Waters, C N, Waters, R A, Barclay, W J, and Davies, J R. 2009. Lithostratigraphical framework for Carboniferous successions of Southern Great Britain (Onshore). British Geological Survey Research Report, RR/09/01. 184pp. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| E059 | |||