57 60 70 80 90 4 00 000 10 20 30 40 50 60 70 80 90 92 76 76 Vein minerals 70 80 90 400 10 Coal Coalbed methane 400 450 Methane contained within coal seams is known as coalbed methane. 19 20 21 The area contains a major part of the Northern Pennine Orefield, which has had a TS Coal-bearing strata are principally confined to the Coal Measures of However, the gas content of the coal seams of the Durham coalfield long history of metal mining, notably for lead (galena - PbS), with associated STUBLICK FAUL Upper Coal 60 60 the Durham Coalfield. The exposed coalfield occupies a broad Measures and also in outlying areas of coal-bearing strata to the west, are too ENVIRONMENT by-product silver. Zinc (sphalerite - ZnS) has also been mined locally. In the post-War TRANSPORT outcrop from Consett towards the coast. East of a line through Cambriense Marine Band low to be of interest for the production of coalbed methane. period the orefield has principally been a source of fluorspar (CaF2 ), unlikely tp be R EGIONS Ferryhill and Boldon and extending offshore, coal-bearing strata dip 5 5 resumed in the forseeable future. Barium minerals (baryte -BaSO and witherite - 50 50 4 beneath overlying Permian rocks to form the concealed coalfield. Principal Coal Hydrocarbons BaCO3 ) have also been produced locally and baryte continues to be produced from Resource the Closehouse openpit in Lunedale. During the final years of deep mining, coal extraction was 15 exploration wells have been drilled in the area, 13 of which were Hebburn Fell 25 26 27 concentrated at a number of amalgamated coastal collieries in which Subsidiary Coal located on an anticline near Redcar. One borehole (Kirkleatham 1) DURHAM AND THE TEES VALLEY A notable characteristic of the orefield is the very well-marked zonal distribution of workings extended up to 5 km offshore. The last deep mine closed in Resource was tested for gas in the Magnesian Limestone, but found to be minerals, with fluorite being abundant in the centre of the orefield and barium 550 550 1993 and small-scale underground production ceased with the Middle Coal non-commercial. Only minor shows of oil and gas were recorded (comprising Co. Durham, Darlington, Hartlepool, Measures KIRKLEATHAM 2 CO.DURHAM minerals predominating in the outer more marginal zones. The most important ALLENHEADS elsewhere. However, gas has either been generated in the Durham 70 ALSTON White Vein closure of the Park Drift mine, near Willington in 1999. Future 0 metres HARTLEPOOL 70 Middlesbrough, Redcar & Cleveland mineral deposits occur as veins which cut Carboniferous rocks and the Whin Sill Moorland and Teesside area, or has migrated into it. Current exploration activity REDCAR G1 1 commercial interest in the coalfield is likely to be confined to sites Maltby Marine Band (dolerite). Wall-rock lithology exerts a vital influence on vein width and productivity, indicates that the area is still considered prospective. PEDL 029 REDCAR G2 and Stockton-on-Tees) Greencleugh Vein suitable for opencast extraction. High Main Report 44 Report 99 with veins being typically wider and more productive in hard rocks, such as 100 ROC REDCAR G8 REDCAR G3 2 3 4 REDCAR G5 limestone, sandstone and the Whin Sill. The major vein structures, which have Red Vein REDCAR G9 31 32 34 A Summary of Mineral Resource Information Burtree The Durham Coalfield has been an important source of opencast 0 20 km REDCAR G7 supported fluorspar production in the past, are shown on the inset map. Any future NENTHEAD 8 Pastures Vein 5 REDCAR G10 REDCAR G6 DARLINGTON STOCKTON-ON- 6 coal, although output has declined in recent years. Opencast activity 200 BRAFFERTON 1 TEES interest in fluorspar depends upon identifying and accessing downwards extensions 9 7 KIRKLEATHAM 3 PEDL 002 REDCAR & for Development Plans 40 Sedling-Longsike Vein 40 Vanderbecki Marine Band Report 40 Report 111 is confined to the exposed Lower and Middle Coal Measures. The KIRKLEATHAM 1 ROC CLEVELAND of major orebodies and perhaps locating new orebodies in poorly exposed ground on 10 12 Hydrocarbon Well REDCAR G4 11 main concentration of coals of economic interest occur between the SCALING 1 Mineral Resources lateral extremities of major veins. Slitt Vein STANHOPE 300 MIDDLESBROUGH Bottom Marshall Green at the base and the High Main at the top and Lower Coal P ST JOHN’S CHAPEL Scale 1:100 000 E Measures Exposed Coal Measures N N this zone has been defined as the principal opencast coal resource 33 IN Marshall Green Former Fluorspar mines : E Slitt Vein 400 F area on the map. Locally a few thin seams have been worked below A B 40 41 42 U LT U Concealed Coal Measures Compiled by D.G. Cameron, D.J.D. Lawrence, K.A. Linley, D.E. Highley, R S the Bottom Marshall Green. The base of the overlying Permian rocks Subcrenatum Marine Band 1 Whiteheaps major fluorite-bearing veins T 5 5 R 00 00 E E.W. Johnson, B. Young and S. Holloway. 2 Frazer’s Hush major baryte-bearing veins E is taken as the upper limit of the opencast resource, although some 500 30 FO 30 Project Leader: D.E. Highley. 3 Groverake major structural features R coal has been recovered from the floors of large dolomite quarries. Petroleum Development and Exploration Licence 4 4 D PEDL 00 50 issued under the Petroleum (Production) Act 1934 4 Redburn D Planning Consultant, J.F. Cowley, Mineral & Resource Planning Associates. outer margin of fluorite zone IS The areas of former opencast coal sites mainly reflect the limits of (as at November, 1998) 5 Stotfield Burn inner margin of barium zone TU Millstone Grit R coal extraction, although in some cases they are site boundaries. No Digital cartography by S.E. Wood, British Geological Survey, Keyworth. 6 Stanhopeburn (where not coincident with B A 7 Crawleyside outer margin of fluorite) NC claim is made for the accuracy or completeness of this information. HYDROCARBON WELLS OF DURHAM AND TEESSIDE 8 Burtree Pasture E ALE FAULT county boundary LUNED More detailed information on specific sites may be obtained from the Production of this map was commissioned and funded by the 9 Sedling KIRKLEATHAM 1 KIRKLEATHAM 2 KIRKLEATHAM 3 Department of the Environment, Transport and the Regions 10 Blackdene Closehouse Barytes Coal Authority or relevant Local Authority. Operator: D’Arcy Exploration Co Ltd Operator: D’Arcy Exploration Co Ltd Operator: D’Arcy Exploration Co Ltd 1:25 000 map published (Industrial Minerals (Contract MP0624). 11 Barbary 0510 km 20 20 Drilled: 26.06.1945 Drilled: 05.03.1946 Drilled: 19.03.1963 1:50 000 map published Assessment Sand and Gravel Resource Map) 12 Cambokeels 70 80 904 00 10 Terminal depth: 1138.7 m Total depth: 942.1 m Total depth: 675.7 m 60 Status: Produced 73,000 cubic feet/day gas Status: Plugged and abandoned with Status: Plugged and abandoned with Current digital availability of these sheets can be found at 60 from Permian Magnesian Limestone, 860 - 904 m. traces of oil at top of Carboniferous section. gas shows in Permian anhydrite. 1:63 360 map published the British Geological Survey website www.thebgs.co.uk SAND & GRAVEL Minor oil produced from 880 - 904 m. Penetrated: Lower Jurassic, Triassic, Permian Penetrated: Lower Jurassic, Triassic, Traces of gas in Carboniferous and Carboniferous Permian and Carboniferous or www.british-geological-survey.co.uk Superficial deposits Penetrated: Lias Triassic, Permian and Carboniferous SCALING 1 BRAFFERTON 1 River sand & gravel resources Operator: Shell Operator: Enterprise Oil plc Sand & Gravel Union Brickworks Drilled: 11.11.1987 Drilled: 23.05.1989 Coppy Sledge REDCAR G1-G10 Total depth: 2519 m Total depth: 1981.2 m Two main categories of sand & gravel are defined: Concealed river sand & gravel resources in assessed areas Hill (Sg) Clay Pit (Cl) Wood Operator: Anglo-American Oil Co True vertical depth: 2159 m Status: Plugged and abandoned dry (1) Superficial (drift) deposits, further subdivided into (a) river sand & gravel, (b) glacial sand & (Sg) Urpeth Gravel Pit Drilled: 29.04.1939 - 13.07.1939 Status: Plugged and abandoned Tested: Upper (Millstone Grit) and (Hargreaves) (Sg) St Bedes (Cl) gravel, and (c) beach and blown sand deposits. Glacial sand & gravel resources Status: All holes plugged and abandoned, dry Tested: Jurassic, Triassic, Lower Carboniferous (2) Bedrock (solid) deposits represented here by the Basal Permian Sands. Tested: Lower Jurassic, Upper Triassic Permian, Carboniferous (Carboniferous Limestone) Birtley Grange (Cl) Concealed glacial sand & gravel resources in assessed areas East Tanfield (Cl) Parts of the area assessed for sand and gravel by BGS are identified on the map. Resources shown here are taken from these maps where available. In these areas, the possible extent of glacial sand Blown sand and raised beach deposits Evaporites and gravel concealed beneath till is shown. These areas were defined by overburden to mineral ratios. High Handenhold (Sg) Outside these areas, available data are more limited. Only exposed sand and gravel is defined, Derwent Gypsum / Anhydrite although resources concealed beneath till may be extensive in some places. In addition, narrow Boundaries of areas assessed for sand & gravel Valley (Sst) (<200 m) spreads of alluvial deposits are mainly excluded from the map (unless associated with glacial at the indicated resource level Grange Villa (Sg) Roger Hill (Sg) Gypsum (CaSO42 .2H O) is formed by the hydration of anhydrite (CaSO4 ) at or near surface but sand and gravel) as their limited width is likely to preclude economic working. New Kyo Hett Lumley Brickworks (Cl) passes into anhydrite at depth. Anhydrite is, therefore, much more extensive than gypsum and Bedrock deposits Berry Bank (Charley Pit) (Cl) Hills (Sst) Wharnley Burn (Sg) occurs at several horizons within Permian strata in the east of the area.