The BGS Lexicon of Named Rock Units — Result Details

Park Limestone Formation

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 (-4257)
Alternative Name(s): none recorded or not applicable
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 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. 
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. 
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. 
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