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Value: Concealed higher purity chalk (93-98% CaCO3) where overburden does not exceed five metres: Cretaceous Label: Concealed higher purity chalk (93-98% CaCO3) where overburden does not exceed five metres: Cretaceous Description: N/A Symbol:
Value: Concealed lower purity chalk (<93% CaCO3) where overburden does not exceed five metres: Cretaceous Label: Concealed lower purity chalk (<93% CaCO3) where overburden does not exceed five metres: Cretaceous Description: N/A Symbol:
Value: Common shale for brick coincident with areas of shallow coal Label: Common shale for brick coincident with areas of shallow coal Description: N/A Symbol:
Value: Brick clay: Carboniferous, Alveley Member (extent shown in areas where the unit has been worked) Label: Brick clay: Carboniferous, Alveley Member (extent shown in areas where the unit has been worked) Description: N/A Symbol:
Value: Brick clay: Carboniferous, Ruabon (Etruria) Formation (Extent shown only where unit is not concealed by overburden) Label: Brick clay: Carboniferous, Ruabon (Etruria) Formation (Extent shown only where unit is not concealed by overburden) Description: N/A Symbol:
Value: Brick clay: Recent, alluvium/Tidal Flat deposits (in areas of workings only) Label: Brick clay: Recent, alluvium/Tidal Flat deposits (in areas of workings only) Description: N/A Symbol:
Value: Other igneous rocks, including basalts, trachytes, andesites, dolerites and associated intrusions Label: Other igneous rocks, including basalts, trachytes, andesites, dolerites and associated intrusions Description: N/A Symbol:
Value: Quartz-Dolerite sills and dykes (Midland Valley Sill-Complex) Label: Quartz-Dolerite sills and dykes (Midland Valley Sill-Complex) Description: N/A Symbol:
Value: Dolerite intrusions with potential for high specification aggregate Label: Dolerite intrusions with potential for high specification aggregate Description: N/A Symbol:
Value: Other igneous rocks including basalts, felsites, gabbros, tuffs and granites Label: Other igneous rocks including basalts, felsites, gabbros, tuffs and granites Description: N/A Symbol:
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Value: Sandstone with potential for high specification aggregate: Ordovician and Silurian, Kirkby Moor Formation, Coniston Group and Wray Castle Formation Label: Sandstone with potential for high specification aggregate: Ordovician and Silurian, Kirkby Moor Formation, Coniston Group and Wray Castle Formation Description: N/A Symbol:
Value: Sandstone with potential for high specification aggregate Label: Sandstone with potential for high specification aggregate Description: N/A Symbol:
Value: Construction and silica sand: Recent, Shirdley Hill Sand Label: Construction and silica sand: Recent, Shirdley Hill Sand Description: N/A Symbol:
Value: Quartzitic sandstone with potential for silica sand and silica rock Label: Quartzitic sandstone with potential for silica sand and silica rock Description: N/A Symbol:
Value: Silica sand: Quaternary (approximate extent of area worked for silica sand in Cheshire) Label: Silica sand: Quaternary (approximate extent of area worked for silica sand in Cheshire) Description: N/A Symbol:
Value: Silica sand: Recent, Approximate extent of intertidal deposits near worked areas Label: Silica sand: Recent, Approximate extent of intertidal deposits near worked areas Description: N/A Symbol:
Value: Gypsum: Permian, Eden Shales/St Bees Shales: A Bed outcrop Label: Gypsum: Permian, Eden Shales/St Bees Shales: A Bed outcrop Description: N/A Symbol:
Value: Gypsum: Permian, Eden Shales/St Bees Shales: B Bed outcrop Label: Gypsum: Permian, Eden Shales/St Bees Shales: B Bed outcrop Description: N/A Symbol:
Value: Gypsum: Permian, Eden Shales/St Bees Shales: C Bed outcrop Label: Gypsum: Permian, Eden Shales/St Bees Shales: C Bed outcrop Description: N/A Symbol:
Value: Gypsum: Permian, Eden Shales/St Bees Shales: D Bed outcrop Label: Gypsum: Permian, Eden Shales/St Bees Shales: D Bed outcrop Description: N/A Symbol:
Value: Potential slate resource with recorded workings (only on GIS) Label: Potential slate resource with recorded workings (only on GIS) Description: N/A Symbol:
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Value: Underground coal resource area (seams at least 2 m thick, between 600 m and 1200 m depth) Label: Underground coal resource area (seams at least 2 m thick, between 600 m and 1200 m depth) Description: N/A Symbol:
Value: Blown Sand deposits - Concealed resources in area assessed by BGS Label: Blown Sand deposits - Concealed resources in area assessed by BGS Description: N/A Symbol:
Value: Blown Sand deposits - Indicated resources in area assessed by BGS Label: Blown Sand deposits - Indicated resources in area assessed by BGS Description: N/A Symbol:
Value: Fan gravel deposits - Indicated resources in area assessed by BGS Label: Fan gravel deposits - Indicated resources in area assessed by BGS Description: N/A Symbol:
Value: Glaciofluvial deposits - Concealed resources in area assessed by BGS Label: Glaciofluvial deposits - Concealed resources in area assessed by BGS Description: N/A Symbol:
Value: Glaciofluvial deposits - Indicated resources in area assessed by BGS Label: Glaciofluvial deposits - Indicated resources in area assessed by BGS Description: N/A Symbol:
Value: Head gravel deposits - Indicated resources in area assessed by BGS Label: Head gravel deposits - Indicated resources in area assessed by BGS Description: N/A Symbol:
Value: River Terrace deposits - Concealed resources in areas assessed by BGS Label: River Terrace deposits - Concealed resources in areas assessed by BGS Description: N/A Symbol:
Value: River Terrace deposits - Indicated resources in area assessed by BGS Label: River Terrace deposits - Indicated resources in area assessed by BGS Description: N/A Symbol:
Value: Sub-alluvial River Terrace deposits - Indicated resources in area assessed by BGS Label: Sub-alluvial River Terrace deposits - Indicated resources in area assessed by BGS Description: N/A Symbol:
Value: Sub-alluvial and river terrace deposits: Inferred resources Label: Sub-alluvial and river terrace deposits: Inferred resources Description: N/A Symbol:
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Value: Bedrock sand and gravel: Eocene, Aller Gravel Formation, Tower Wood Gravel Member and Buller's Hill Gravel Member Label: Bedrock sand and gravel: Eocene, Aller Gravel Formation, Tower Wood Gravel Member and Buller's Hill Gravel Member Description: N/A Symbol:
Value: Bedrock sand and gravel: Palaeogene, Poole Formation and Branksome Sand Label: Bedrock sand and gravel: Palaeogene, Poole Formation and Branksome Sand Description: N/A Symbol:
Value: Concealed bedrock sand and gravel: only within areas assessed by BGS Label: Concealed bedrock sand and gravel: only within areas assessed by BGS Description: N/A Symbol:
Value: Construction sand (Silica sand in Mansfield area only): Triassic, Sherwood Sandstone Group Label: Construction sand (Silica sand in Mansfield area only): Triassic, Sherwood Sandstone Group Description: N/A Symbol:
Value: Construction sand: Cretaceous, mainly Lower Greensand Group Label: Construction sand: Cretaceous, mainly Lower Greensand Group Description: N/A Symbol:
Value: Sandstone and conglomerate beneath overburden less than ten metres Label: Sandstone and conglomerate beneath overburden less than ten metres Description: N/A Symbol: