The BGS Lexicon of Named Rock Units — Result Details
Cautley Volcanic Member
Computer Code: | CTV | Preferred Map Code: | CtV |
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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) |
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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): | |||
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. | |||
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. | |||
1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
E040 |