The BGS Lexicon of Named Rock Units — Result Details

Aislaby Group [Obsolete Name And Code: See ZG]

Computer Code: ALBG Preferred Map Code: notEntered
Status Code: Index Level
Age range: Guadalupian Epoch (PUG) — Lopingian Epoch (PUL)
Lithological Description: Dolomite, dolomitic limestone and evaporites.
Definition of Lower Boundary: Drawn at base of the Kirkham Abbey or Concretionary Limestone formations where they rest conformably on the Hayton or Hartlepool Anhydrite formations.
Definition of Upper Boundary: Drawn at conformable boundary between the Fordon Evaporites Formation or the Edlington Formation, and Magnesian Limestone of the Seaham Formation or Brotherton Formation.
Thickness: Up to approximately 350 metres.
Geographical Limits: Eastern England.
Parent Unit: Not Entered (?)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
Type Section  Eskdale No. 2 Borehole, near Aislaby, Whitby. 
Reference(s):
Rayner, D H, and Hemingway, J E (editors). 1974. The geology and mineral resources of Yorkshire. (Leeds: Yorkshire Geological Society.) 
Smith, D B, Brunstrom, R G W, Manning, D I, Simpson, S and Shotton, F W. 1974. A correlation of Permian rocks in the British Isles. Geological Society of London Special Report No. 5. 
Smith, D B, Harwood, G M, Pattison, J and Pettigrew, T H. 1986. A revised nomenclature for Upper Permian strata in eastern England. 9-17 in Harwood, G M and Smith, D B (editors). The English Zechstein and Related Topics. Geological Society Special Publication No.22. 
1:50K maps on which the lithostratigraphical unit is found, and map code used:
none recorded or not applicable