The BGS Lexicon of Named Rock Units — Result Details
Cautley Volcanic Member
| Computer Code: | CTV | Preferred Map Code: | CtV |
|---|---|---|---|
| Status Code: | Full | ||
| Age range: | Rawtheyan Stage (OW) — Rawtheyan Stage (OW) | ||
| Lithological Description: | Silicic tuffs, buff to pink in colour; thickly bedded at base becoming finer grained and thinly bedded at top | ||
| Definition of Lower Boundary: | Taken at the base of the lowest bed of volcaniclastic rock overlying grey flaggy mudstone of the main part of the Cautley Mudstone Formation. | ||
| Definition of Upper Boundary: | Passes up into grey splintery mudstone of the Cautley Mudstone Formation. | ||
| Thickness: | Up to 24m | ||
| Geographical Limits: | Restricted to the Cautley and Dent districts of Cumbria | ||
| Parent Unit: | Cautley Mudstone Formation (CMU) | ||
| Previous Name(s): | Cautley Volcanic Formation [Obsolete Name and Code: Use CTV]
(-4574)
Cautley Volcanic Group [Obsolete Name and Code: Use CTV] (-828) |
||
| Alternative Name(s): | none recorded or not applicable | ||
| Stratotypes: | |||
| Type Area | Wandale Beck (Murthwaite Inlier) and its tributaries on the western bank between the Odd Gill and the confluence with the River Rawthey, Cumbria. Ingham, 1966. | ||
| Reference Section | Backside Beck, Westerdale Inlier, Cumbria. Ingham, 1966. | ||
| Reference(s): | |||
| Ingham, J K, 1966. The Ordovician rocks in the Cautley and Dent districts of Westmorland and Yorkshire. Proceedings of the Yorkshire Geological Society, Vol.35, 455-505. | |||
| Owen, A W and Rushton, A W A, 1999. Arenig to Ashgill of northern England. pp 259-292 in Rushton, A W A, Owen, A W, Owens, R M, and Prigmore, J K. British Cambrian to Ordovician stratigraphy. Geological Conservation Review, Vol. 18. Joint Nature Conservation Committee. Peterborough. | |||
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
| E040 | |||