Cumberland Coalfield

The Cumberland Coalfield is a coalfield in Cumbria, north-west England. It extends from Whitehaven in the south to Maryport and Aspatria in the north.

Geology

The following coal seams occur within the Coal Measures Group in this coalfield. Not all seams are present in any one part of the coalfield:
Middle Coal Measures Formation

Brassy
Black Metal
Fireclay
White Metal
Little
Slaty
Tenquarters
Rattler
Bannock Band
Main Band
Lower Metal
Yard Cannel Band
Yard
Lower Yard

There is also a Crow seam between the Metal and Bannock seams.
Lower Coal Measures Formation

Half Yard
Two Foot
Little Main
Eighteen Inch
Lickbank
Sixquarters
Parrot
Upper Threequarters Rider
Upper Threequarters
Lower Threequarters
Upper Albrighton
Middle Albrighton
Lower Albrighton
Harrington Four Foot

Towards the top of the underlying Stainmore Formation, which is of Namurian age, are the:

Udale Coal
Bedlam Gill Coal