The BGS Lexicon of Named Rock Units — Result Details
Upper Brimham Grit
| Computer Code: | UPBM | Preferred Map Code: | UpBm |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Kinderscoutian Substage (CK) — Kinderscoutian Substage (CK) | ||
| Lithological Description: | A thickly bedded, trough cross-bedded, grey, coarse-grained, feldspathic sandstone, fine-grained in upper 3m and with ganister top. | ||
| Definition of Lower Boundary: | Sharp upward change in a conformable succession from predominantly siltstone to sandstone - base of first coarse-grained sandstone bed above the Brimham Shale. | ||
| Definition of Upper Boundary: | Sharp upward change in a conformable succession from sandstone to predominantly mudstone - top of last sandstone bed below the Wandley Gill Sandstone. | ||
| Thickness: | 5 to 15 m. | ||
| Geographical Limits: | Pennines foothills southwest and east of Masham [SE2230 8080]. | ||
| Parent Unit: | Hebden Formation (HEBD) | ||
| Previous Name(s): | Upper Plompton Grit
(UPG)
Second Brimham Grit [Obsolete Name and Code: Use UPBM] (-1895) Upper Plompton Grit (UPG) |
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| Alternative Name(s): | Upper Plompton Grit |
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| Stratotypes: | |||
| Reference Section | Hack Fall on River Ure, 2.5km north of Kirkby Malzeard, North Yorkshire; base seen. Wilson and Thompson, 1965. | ||
| Reference Section | North Gill Beck (Hambleton Dike) a tributary of the River Laver, 8km west of Kirby Malzeard, North Yorkshire; full succession seen. Wilson and Thompson, 1965. | ||
| Reference(s): | |||
| Cooper, A H and Burgess, I C. 1993. Geology of the country around Harrogate. Memoir for 1:50000 geological sheet 62 (England and Wales). London: HMSO for the British Geological Survey. | |||
| Wilson, A A and Thompson, A T. 1965. The Carboniferous section in the Kirkby Malzeard area, Yorkshire. Proceedings of the Yorkshire Geological Society. Vol 35, 203-227. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| E051 | |||