The Durham Coalfield is a coalfield in north-east England. It is continuous with the Northumberland Coalfield to its north. It extends from Bishop Auckland in the south to the boundary with the county of Northumberland along the River Tyne in the north, beyond which is the Northumberland Coalfield.British Geological Survey 2007 Bedrock geology: UK North 1:625,000 scale geological map, BGS, Keyworth, Notts
The two contiguous coalfield areas were often referred to as the Durham and Northumberland Coalfield(s) or as the Great Northern Coalfield.
Geology See also Geology of County Durham
The following coal seams are recorded from the Durham coalfield. They are listed here in stratigraphic order with the youngest at the top and the oldest/deepest at the bottom:British Geological Survey 1:50,000 scale geological map sheet no 21 (England & Wales series) Sunderland
Upper Coal Measures Hylton Castle
Middle Coal Measures Dean Hebburn Fell Usworth Ryhope Five-Quarter Ryhope Little High Main Metal Five-Quarter Main Maudlin Durham Low Main Brass Thill Hutton
Lower Coal Measures Harvey Tilley Busty Three-Quarter Brockwell Victoria Marshall Green Ganister Clay
Future developments No future development is planned. Previously, with the development of new technology to produce energy and capture carbon dioxide by carbon capture and storage (CCS) there was renewed interest in the exploitation of the Durham Coalfield reserves by underground coal gasification. This is strategically important to local energy-intensive industries, such as the commodity chemical and steel members of the Northeast of England Process Industry Cluster (NEPIC).
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