| Computer Code: |
PNKG |
Preferred Map Code: |
notEntered |
| Status Code: |
Full |
| Age range: |
Courceyan Substage (CF)
— Courceyan Substage (CF) |
| Lithological Description: |
The Pinskey Gill Formation comprises grey, vuggy, dolomitic limestone and dolostone interbedded with grey to dark grey calcareous mudstone and thin-bedded, calcareous, silty sandstone.
The strata were deposited in a peritidal marine and fluvial environment.
Mid Courceyan. |
| Definition of Lower Boundary: |
The formation rests unconformably upon a smooth planation surface cut into Lower Palaeozoic strata. |
| Definition of Upper Boundary: |
Conglomerate beds of the Marsett Formation overlie it unconformably. |
| Thickness: |
Up to 50 m. |
| Geographical Limits: |
The formation is found only at Ravenstonedale in the Stainmore Trough. |
| Parent Unit: |
Ravenstonedale Group (RVS)
|
| Previous Name(s): |
Pinskey Gill Beds [Obsolete Name and Code: Use PNKG]
(-4261)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Section |
The type section is in Pinskey Gill [NY 698 040] where the formation is about 20 m thick and comprises beds of sandstone, calcareous mudstone with sporadic pebbles, sandy shale, interbedded mudstone and shale, and dolomite, (see Garwood, 1913, pp. 496 - 499). |
| Reference(s): |
| Dean, M T, Browne, M A E, Waters, C N, and Powell, J H. 2011. A lithostratigraphical framework for the Carboniferous successions of northern Great Britain (onshore). British Geological Survey Research Report RR/10/007. 165 pp. |
| Waters, C N, Gillespie, M R, Smith, K, Auton, C A, Floyd, J D, Leslie, A G, Millward, D, Mitchell, W I, McMillan, A A, Stone, P, Barron, A J M, Dean, M T, Hopson, P M, Krabbendam, M, Browne, M A E, Stephenson, D, Akhurst, M C, and Barnes, R P. 2007. Stratigraphical Chart of the United Kingdom: Northern Britain. (British Geological Survey.) |
| Holliday, D W, Neves, R, and Owens, B. 1979. Stratigraphy and palynology of early Dinantian (Carboniferous) strata in shallow boreholes near Ravenstonedale, Cumbria. Proceedings of the Yorkshire Geological Society, Vol. 42, 343-356. |
| Johnson, G A L, and Marshall, A E. 1971. Tournaisian beds in Ravenstonedale, Westmorland. Proceedings of the Yorkshire Geological Society, Vol. 38, 261-280. |
| Varker, W J, and Higgins, A C. 1979. Conodont evidence for the age of the Pinskey Gill Beds of Ravenstonedale, north-west England. Proceedings of the Yorkshire Geological Society, Vol. 42, 357-369. |
| Varker, W J, and Sevastopulo, G D. 1985. The Carboniferous System: Part 1 - conodonts of the Dinantian Subsystem from Great Britain and Ireland. 167-209 in A Stratigraphical Index of Conodonts. Higgins, A C, and Austin, R L (editors). (Chichester: Ellis Horwood Limited for the British Micropalaeontological Society). |
| Garwood, E J. 1913. The Lower Carboniferous succession in the north-west of England. Journal of the Geological Society, London, Vol. 68 (for 1912), 449-586. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E040
|
