The BGS Lexicon of Named Rock Units — Result Details

Joan Coal (West And South Yorkshire, And Nottingham)

Computer Code: JNC Preferred Map Code: notEntered
Status Code: Index Level
Age range: Langsettian Substage (CA) — Langsettian Substage (CA)
Lithological Description: The Joan Coal is a thin and impersistent coal that commonly includes layers of mudstone or cannel. It has been worked in the Dewsbury district but is otherwise little economic value.
Definition of Lower Boundary: none recorded or not applicable
Definition of Upper Boundary: none recorded or not applicable
Thickness: none recorded or not applicable
Geographical Limits: none recorded or not applicable
Parent Unit: Pennine Lower Coal Measures Formation (PLCM)
Previous Name(s): none recorded or not applicable
Alternative Name(s): none recorded or not applicable
Stratotypes:
none recorded or not applicable
Reference(s):
none recorded or not applicable
1:50K maps on which the lithostratigraphical unit is found, and map code used:
E126 E087 E086 E078 E070 E077 E142