The BGS Lexicon of Named Rock Units — Result Details

Kirkby Moor Formation

Computer Code: KMF Preferred Map Code: KMF
Status Code: Full
Age range: Ludfordian Age (SD) — Pridoli Epoch (SO)
Lithological Description: A sequence of thick beds of massive or convulate laminated, and thin-bedded ripple-cross laminated, fine-grained sandstone. The formation includes rocks previously included within the Underbarrow and Scout Hill Flag formations.
Definition of Lower Boundary: Taken at the change from banded mudstone-siltstone units of the Bannisdale Formation to sandstone, in part thin-bedded and cross-laminated, or thick bedded massive fine-grained sandstone.
Definition of Upper Boundary: Unconformably overlain by various Devonian and Carboniferous rocks.
Thickness: More than 430m
Geographical Limits: Southern Lake District, Cumbria; Howgill Fells, Cumbria.
Parent Unit: Kendal Group (KNDL)
Previous Name(s): Kendal Group (KNDL)
Underbarrow Flag Formation (UND)
Scout Hill Flags (-1002)
Kirkby Moor Flags (-1001)
Upper Slates Of Kendal (-4731)
Kirkby Moor Flag Formation (-3501)
Alternative Name(s): none recorded or not applicable
Type Section  Black Crag, northnorthwest of Staveley, near Kendal, Cumbria. Lawrence et al., 1986. 
Type Area  Original type section at Kirkby Moor, Westmorland. However, typical sections in the rocks are seen on the slopes south of Benson Knott, Sheet 39 (Kendal). 
King, L M. 1992. A basin study of the early Palaeozoic Windermere Group, northwest England. Unpublished PhD thesis. University of Cambridge. 
Woodcock, N H and Rickards, R B. 2006. Geological notes and local details for 1:10 000 scale Sheet SD68NW (Middleton) and part of Sheet SD68NE (Gawthrop). British Geological Survey Internal Report: IR/06/101. 42pp 
King, L M. 1994. Turbidite to storm transition in a migrating foreland basin: The Kendal Group (Upper Silurian), northwest England. Geological Magazine, Vol.131, 255-267. 
Soper, N J. 2006. Notes on the Windermere Supergroup of the country between Kendal and the River Lune. (sheets SD59 and SD69(W)). British Geological Survey Internal Report: IR/06/081. 15pp. 
Stone, P. 2006. Geological notes for the Silurian strata and their Quaternary cover on 1:10 000 scale sheets SD48NW, SD58NE (Old Hutton) and part of SD58NW. British Geological Survey Internal Report: IR/06/129. 16pp. 
Lawrence, D J D, Webb, B C, Young, B and White, D E. 1986. The geology of the Late Ordovician and Silurian rocks (Windermere Group) in the area around Kentmere and Crook. Includes map, 1:25,000 series, Parts of Sheets NY40 and SD49 Kentmere and Crook, Solid and Drift Geology. Report of the British Geological Survey, 18/5. 
Shaw, R W L. 1971. The faunal stratigraphy of the Kirkby Moor Flags of the type area near Kendal. Westmorland. Geological Journal, Vol.7, p.359-380. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E039 E049