| Computer Code: |
KENT |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Cautleyan Stage (OU)
— Cautleyan Stage (OU) |
| Lithological Description: |
Alternating beds of grey limestone, up to 20 cm thick, and dark grey mudstone; macrofossils appear to be absent but the microfauna is dominated by ostracods. |
| Definition of Lower Boundary: |
The base coincides with that of its parent, the Kirkley Bank Limestone Formation. |
| Definition of Upper Boundary: |
Taken at the change in lithofacies from limestone and interbedded mudstone to calcareous siltstone and shelly sandstone at the base of the Applethwaite Member in the east, or to the more siliciclastic siltstone at the base of the overlying High Pike Haw Member in the west of the outcrop. |
| Thickness: |
Up to about 21 m, but generally less. |
| Geographical Limits: |
As for the parent unit, Kirkley Bank Limestone Formation. |
| Parent Unit: |
Kirkley Bank Formation (KKB)
|
| Previous Name(s): |
none recorded or not applicable
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
Outcrop south west of High Haume Farm, Dalton in Furness, Cumbria. |
| Reference(s): |
| Millward, D, and Stone, P. 2012. Stratigraphical framework for the Ordovician and Silurian sedimentary strata of northern England and the Isle of Man. British Geological Survey Research Report, RR/12/04. 119pp. |
| Johnson, E W, Soper, N J, Burgess, I C, Ball, D F, Beddoe-Stephens, B, Carruthers, R M, Fortey, N J, Hirons, S, Merritt, J W, Millward, D, Roberts, B, Walker, A B and Young, B. 2001. Geology of the country around Ulverston. Memoir of the British Geological Survey, England and Wales, Sheet 48. |
| Kneller, B C, Scott R W, Soper N J, Johnson E W and Allen P M, 1994. Lithostratigraphy of the Windermere Supergroup, Northern England. Geological Journal, Vol. 29, 219-240. |
| 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. |
| McNamara, K J. 1979. The age, stratigraphy and genesis of the Coniston Limestone Group in the southern Lake District. Geological Journal, 14, 41-69. |
| 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. |
| Rose, W C C, and Dunham, K C. 1977. Geology and hematite deposits of South Cumbria. Economic Memoir of the Geological Survey of Great Britain, Sheet 58, part 48 (England and Wales). |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
| none recorded or not applicable |
