The BGS Lexicon of Named Rock Units — Result Details

Napes Needle Member [Obsolete Name: Part Of LME]

Computer Code: NPN Preferred Map Code: NPN
Status Code: Index Level
Age range: Caradoc Series (O4) — Caradoc Series (O4)
Lithological Description: Varied tuffs, lapilli tuffs and pyroclastic breccias with intercalated sedimentary rocks.
Definition of Lower Boundary: Base of the varied sequence of pyroclastic rocks, etc that unconformably overlie the Crinkle Tuff Member (high-grade rhyolitic tuff) in the Airy's Bridge Tuff Formation.
Definition of Upper Boundary: Defined by base of overlying members of the Lingmell Formation, usually the Scafell Dacite, and by the succeeding Seathwaite Fells Formation volcaniclastic sandstone.
Thickness: 0 to 65m
Geographical Limits: Rosthwaite Fell (NY 25 12) to Scafell (NY 20 06), Bell Crag (NY 29 14) and Great Langdale (NY 28 06), Cumbria.
Parent Unit: Lingmell Tuff Formation (LME)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Type Area  Scafell to Rosthwaite Fell. 
Kneller, B C, Kokelaar, B P and Davis, N C, 1993. The Lingmell Formation. British Geological Survey Technical Report, WA/93/43. 
1:50K maps on which the lithostratigraphical unit is found, and map code used: