| Computer Code: |
PKL |
Preferred Map Code: |
PkL |
| Status Code: |
Full |
| Age range: |
Holkerian Substage (CQ)
— Holkerian Substage (CQ) |
| Lithological Description: |
Unbedded or poorly bedded, pale grey or pale yellowish grey bioclastic and peloidal grainstone or biocalcarenite. NOTE: type area is south Cumberland - Furness area. |
| Definition of Lower Boundary: |
Point where sharp (this change can extend over 1 or 2m. Rose and Dunham, 1977, p.29, South Cumbria Memoir) upward change occurs from the dark grey bedded packstones of the Dalton Formation to the pale unbedded grainstones of the Park Limestone. |
| Definition of Upper Boundary: |
Upward change from massive cream-white to thickly bedded grey pseudobrecciated limestone of overlying Urswick Limestone Formation. |
| Thickness: |
120 to 130m |
| Geographical Limits: |
Around Dalton-in-Furness in the west, to near Carnforth in the east. |
| Parent Unit: |
Great Scar Limestone Group (GSCL)
|
| Previous Name(s): |
Park Limestone [Obsolete Name and Code: Use PKL]
(-4257)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Reference Section |
Barker Scar, Holker Hall, Cark-Cartmel, Cumbria. West facing crag forming the western boundary of Old Park Wood 2.8km west-north-west of Holker Hall: the basal 45m of the formation and the contact with the underlying Dalton Formation are exposed. |
| Reference Section |
Crown Quarry and Devonshire Quarry: just north of Stainton and south east of Dalton in Furness, exposing 150m+ of limestone, comprising the upper half of the Park Limestone and much of Urswick Limestone (Rose and Dunham, 1977). |
| 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. 165pp. |
| Adams, A E, Horbury, A D, and Abdel Aziz, A A. 1990. Controls on Dinantian sedimentation in South Cumbria and surrounding areas of north west England. Proceedings of the Geologists' Association, Vol. 101/1, 19-30. |
| Dunham, K C and Rose, W C C. 1941. Geology of the iron-ore field of south Cumberland and Furness. Geological Survey of Great Britain, Wartime Pamphlet, No.16. |
| Rose, W C C. 1977. Geology and Hematite deposits of South Cumbria. Economic Memoir for 1:50,000 Sheet 58 and southern part of Sheet 48. Memoir of the geological Survey of Great Britain. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E059
E058
E048
|
