The BGS Lexicon of Named Rock Units — Result Details

First Brown Metal Coal (West Yorkshire)

Computer Code: BNM1 Preferred Map Code: notEntered
Status Code: Index Level
Age range: Langsettian Substage (CA) — Langsettian Substage (CA)
Lithological Description: The Brown Metal Coals are seams of variable quality and thickness and are not widely worked. They are commonly split and washed out by the Birstall Rock. The First and Second Brown Metals coalesce in the west.
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:
E078 E070 E077