The BGS Lexicon of Named Rock Units — Result Details
Stickle Pike Tuff Member
Computer Code: | STPI | Preferred Map Code: | StPi |
---|---|---|---|
Status Code: | Full | ||
Age range: | Caradoc Series (O4) — Caradoc Series (O4) | ||
Lithological Description: | Rhyolitic lapilli-tuff, pale-weathered, eutaxitic to parataxitic. | ||
Definition of Lower Boundary: | At base of rhyolitic lapilli-tuff in the Lickle Tuff Formation that usually overlies volcaniclastic sandstone and locally rests on the Paddy End Tuff Member. | ||
Definition of Upper Boundary: | Base of overlying Caw Sandstone Formation (volcaniclastic breccia and sandstone) or, locally, the Lag Bank Tuff Formation (dacitic lapilli tuff). | ||
Thickness: | 20 - 100m | ||
Geographical Limits: | Within the Ulpha Basin southeast of the River Duddon. Turner Hall (SD 230 960) to Great Stickle (SD 211 915) and Lickle Valley (SD 240 920), Cumbria. | ||
Parent Unit: | Lickle Tuff Formation (LICK) | ||
Previous Name(s): | Stickle Pike Member [Obsolete Name and Code: Use STPI]
(-1848)
Lickle Rhyolites [Obsolete Name and Code: Use STPI, LICK] (-1657) |
||
Alternative Name(s): | none recorded or not applicable | ||
Stratotypes: | |||
Type Area | Dunnerdale Fells. Between Yew Pike (SD 204 925) and Stickle Tarn (SD 213 928) and from Tarn Hill (SD 208 919) to Great Stickle (SD 2117 9159). | ||
Reference(s): | |||
Mitchell, G H, 1956. (Undivided Lickle Rhyolites). The Borrowdale Volcanic Series of the Dunnerdale Fells, Lancashire. Liverpool and Manchester Geological Journal, Vol.1, p.428-449. | |||
Millward, D, Johnson, E W, Beddoe-Stephens, B, Young, B, Kneller, B C, Lee, M K, Fortey, N J, Allen, P M, Branney, M J, Cooper, D C, Hirons, S, Kokelaar, B P, Marks, R J, McConnell, B J, Merritt, J W, Molyneux, S G, Petterson, M G, Roberts, B, Rundle, C C, Rushton, A W A, Scott, R W, Soper, N J, and Stone, P. 2000. Geology of the Ambleside district. Memoir of the British Geological Survey, England and Wales, Sheet 38. | |||
1:50K maps on which the lithostratigraphical unit is found, and map code used: | |||
E038 |