The Cumberland Coalfield is a coalfield

Coalfield

A coalfield is an area of certain uniform characteristics where coal is mined. The criteria for determining the approximate boundary of a coalfield are geographical and cultural, in addition to geological...

 in Cumbria

Cumbria

Cumbria , is a non-metropolitan county in North West England. The county and Cumbria County Council, its local authority, came into existence in 1974 after the passage of the Local Government Act 1972. Cumbria's largest settlement and county town is Carlisle. It consists of six districts, and in...

, north-west England

England

England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

. It extends from Whitehaven

Whitehaven

Whitehaven is a small town and port on the coast of Cumbria, England, which lies equidistant between the county's two largest settlements, Carlisle and Barrow-in-Furness, and is served by the Cumbrian Coast Line and the A595 road...

 in the south to Maryport

Maryport

Maryport is a town and civil parish within the Allerdale borough of Cumbria, England, in the historic county of Cumberland. It is located on the A596 road north of Workington, and is the southernmost town on the Solway Firth. Maryport railway station is on the Cumbrian Coast Line. The town is in...

 and Aspatria

Aspatria

Aspatria is a small town and civil parish in Cumbria, England, and lies half way between Maryport and Wigton, on the A596. Historically within Cumberland, it is about away from the coast. It is approximately seven miles from the northern boundary of the Lake District, and located to the south east...

 in the north.

The following coal seams occur within the Coal Measures

Coal Measures

The Coal Measures is a lithostratigraphical term for the coal-bearing part of the Upper Carboniferous System. It represents the remains of fluvio-deltaic sediment, and consists mainly of clastic rocks interstratified with the beds of coal...

 Group in this coalfield. Not all seams are present in any one part of the coalfield:

Middle Coal Measures Formation

• (series of un-named coals)
• 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 (or Hensingham Formation), which is of Namurian

Namurian

The Namurian is a stage in the regional stratigraphy of northwest Europe with an age between roughly 326 and 313 Ma . It is a subdivision of the Carboniferous system or period and the regional Silesian series. The Namurian is named for the Belgian city and province of Namur where strata of this age...

age, are the:

• Udale Coal
• Bedlam Gill Coal
• (un-named coals)