The BGS Lexicon of Named Rock Units — Result Details

Paddy End Tuff Member

Computer Code: PER Preferred Map Code: PER
Status Code: Full
Age range: Caradoc Series (O4) — Caradoc Series (O4)
Lithological Description: Pink-weatherd rhyolitic tuff, densely welded and locally rheomorphic.
Definition of Lower Boundary: Base of rhyolitic tuff, overlies an erosion surface within the Lickle Tuff Formation resting on volcaniclastic sandstone and Kiln Bank Tuff Member dacitic tuff in the Ulpha Basin and with marked unconformity on the andesitic bedded tuff of the Duddon Hall Tuff Formation or silicic pyroclastic rocks of the Airy's Bridge Tuff Formation in the Coniston Fells.
Definition of Upper Boundary: Overlain by younger parts of the Lickle Tuff Formation in the Ulpha Basin (volcaniclastic sandstone and rhyolitic tuff (Stickle Pike Member) or by the Lag Bank Formation (dacitic tuff) or Low Water Formation (dacitic tuff) in the Coniston Fells.
Thickness: Ulpha Basin 30 - 100m. Coniston Fells 150 - 170m
Geographical Limits: Ulpha Basin and Coniston Fells. Great Stickle (SD 211 915) to Turner Hall (SD 230 960) and Appletree Worth (2442 9250); Buck Ake (SD 260 970) to Knott Head (NY 300 020), Little Langdale, Cumbria.
Parent Unit: Lickle Tuff Formation (LICK)
Previous Name(s): Paddy End Member (-2971)
Paddy End Rhyolite (-2972)
Alternative Name(s): none recorded or not applicable
Stratotypes:
Reference Section  From Tarn Hill to Great Stickle. 
Reference Section  Dunnerdale Fells between Yew Pike and Stickle Tarn. 
Type Area  Coniston Old Man in the ground between Goats Water (SD 266 976) and Levers Water (SD 280 993). 
Reference(s):
Mitchell, G H, 1940. The Borrowdale Volcanic Series of Coniston, Lancashire. Quarterly Journal of the Geological Society of London, Vol.96, p.301-319. 
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 E048