The BGS Lexicon of Named Rock Units — Result Details
Longnor Sandstone
| Computer Code: | LOS | Preferred Map Code: | LoS |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Kinderscoutian Substage (CK) — Kinderscoutian Substage (CK) | ||
| Lithological Description: | Sandstone, medium-grained, massive, sporadic mud-pellets, sub-arkosic, feldspathic; argillaceous in lower part. Sourced from the northwest. | ||
| Definition of Lower Boundary: | The lower boundary is taken at the base of the first sandstone-dominated unit above fissile mudstones that include a Reticuloceras reticulatum Marine Band. | ||
| Definition of Upper Boundary: | The upper boundary is taken at the base of a mudstone-dominated succession with black fissile mudstone including a Bilinguites gracilis Marine Band overlying the Longnor Sandstone. | ||
| Thickness: | 200 to 240m | ||
| Geographical Limits: | Stanley Moor reservoir [SK042 710]; Hulme end [SK 106 590]; Swythamley [SJ971 647]. | ||
| Parent Unit: | Hebden Formation (HEBD) | ||
| Previous Name(s): | Longnor Grit [Obsolete Name and Code: Use LOS]
(-1042)
Yoredale Grit [Obsolete Name and Code: Use LOS] (-2917) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Partial Type Section | Golling Gate Borehole (Hollinsclough, Derbyshire) (SK06NE/23), proves the upper 73.2 m of the unit, form 1.8-75.0 m below ground level (Aitkenhead et al., 1985). | ||
| Partial Type Section | Stoop Borehole (Dove Head, Derbyshire) (SK06NE/20), from 0 to 35.04 m below ground level (this is the basal 35.04 m of the unit) (Aitkenhead et al., 1985). | ||
| Reference(s): | |||
| Aitkenhead, N, Chisholm, J I, and Stevenson, I P. 1985. Geology of the country around Buxton, Leek and Bakewell. Memoir of the British Geological Survey, England and Wales Sheet 111. | |||
| Hull, E and Green, A H. 1866. The Geology of the country around Stockport, Macclesfield, Congleton and Leek. Memoir of the Geological Survey of Great Britain. | |||
| Bisat, W S, and Hudson, R G S. 1943. The Lower Reticuloceras (R1) goniatite succession in the Namurian of the North of England. Proceedings of the Yorkshire Geological Society, Vol. 24, Pt. 6, 383-438. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| E111 | |||