Group or Formation | Period | Notes |
Alston Group / Knipe Scar Limestone | Carboniferous | |
Alston Group / Potts Beck Limestone | Carboniferous | |
Ampthill Clay | Jurassic | |
Ancholme Group / Kimmeridge Clay | Jurassic | |
Ancholme Group / Oxford Clay | Jurassic | |
Ashfell Limestone | Carboniferous | |
Aymestry Limestone Formation | Silurian | |
Baggy Sandstones Formation | Devonian | |
Bala Group / Chatwell Flags Formation | Ordovician | |
Barton Formation | Palaeogene | |
Barton Beds | Palaeogene | |
Barton Clay | Palaeogene | |
Bee Low Limestones | Carboniferous | |
Belemnite Marls | Jurassic | |
Bembridge Limestone | Palaeogene | |
Bembridge Marls | Palaeogene | |
Bentham Grit | Carboniferous | |
Berkshire Oolite Formation | Jurassic | |
Black Rock Formation | Carboniferous | |
Blackdown Greensand Formation | Cretaceous | |
Blackheath Beds | Palaeogene | |
Blue Lias Formation | Jurassic | |
Bracklesham Formation | Palaeogene | |
Bracklesham Beds | Palaeogene | |
Bracklesham Group / Earnley Formation | Palaeogene | |
Bracklesham Group / Elmore Formation | Palaeogene | |
Bracklesham Group / Marsh Farm Formation | Palaeogene | |
Bracklesham Group / Selsey Formation | Palaeogene | |
Bracklesham Group / Wittering Formation | Palaeogene | |
Bringewood Beds | Silurian | |
Brockenhurst Beds | Palaeogene | |
Bromsgrove Sandstone | Triassic | |
Burwell Rock Formation | Cretaceous | |
Calcareous Grit | Jurassic | |
Carboniferous Limestone | Carboniferous | |
Carmarthen Formation | Ordovician | |
Carstone Formation | Cretaceous | |
Caton Shales | Carboniferous | |
Cauldon Low Conglomerate Formation | Carboniferous | |
Cauldon Low Limestone | Carboniferous | |
Cementstone Formation | Carboniferous | |
Chalk Formation | Cretaceous | |
Chalk Marl Formation | Cretaceous | |
Chalk Group / "Upper Chalk" Formation | Cretaceous | |
Chalk Group / Lower Chalk Formation | Cretaceous | |
Chalk Group / Lower Formation | Cretaceous | |
Charmouth Mudstone Formation | Jurassic | |
Chee Tor Limestone | Carboniferous | |
Cheney Longville Formation | Ordovician | |
Chillesford Clay | Quaternary | |
Claxby Ironstone Formation | Cretaceous | |
Clifton Down Limestone | Carboniferous | |
Cockhill Marine Band | Carboniferous | |
Colsterdale Marine Beds | Carboniferous | |
Coral Rag Formation | Jurassic | |
Corallian Oolite Formation | Jurassic | |
Corallian Group / Coral Rag Formation | Jurassic | |
Corallian Group / Kingston Formation | Jurassic | |
Coralline Crag Formation | Neogene | |
Coralline Oolite Formation | Jurassic | |
Cornbrash Formation | Jurassic | |
Cotswold Slate Formation | Jurassic | |
Crag Group / Norwich Crag Formation | Quaternary | |
Crag Group / Weybourne Crag Formation | | |
Creechbarrow Limestone | Palaeogene | |
Cromer Forest Bed Formation | | |
Cromer Knoll Formation | | |
Cromer Knoll Group / Spilsby Sandstone | Cretaceous | |
Crossdale Shales | Carboniferous | |
Crugan Mudstone Formation | Ordovician | |
Dartmouth Beds | Devonian | |
Denbury Crinoidal Limestone | Devonian | |
Dent Group / Keisley Limestone | Ordovician | |
Ditton Formation | Devonian | |
Downton Castle Sandstone | Silurian | |
Downton Sandstone | Silurian | |
Downton Group / Downton Castle Sandstone | Silurian | |
Downton Group / Rushall Formation | Silurian | |
Dufton Shales | Ordovician | |
Durlston Formation | Cretaceous | |
Duyfor Mudstone | Ordovician | |
East Ogwell Limestone | Devonian | |
Eggardon Grit | Cretaceous | |
Elton Beds | Silurian | |
Eyam Limestone | Carboniferous | |
Eyam Limestones Formation | Carboniferous | |
Farne Group / Scremerston Formation | Carboniferous | |
Forest Bed Formation | | |
Forest Hollow Beds | Carboniferous | |
Forest Marble Formation | Jurassic | |
Frome Clay | Jurassic | |
Fuller's Earth Formation | Jurassic | |
Gault Formation | Cretaceous | |
Glauconitic Marl Formation | Cretaceous | |
Great Oolite Formation | Jurassic | |
Great Oolite Group / Bath Oolite Formation | Jurassic | |
Great Oolite Group / Chipping Norton Limestone | Jurassic | |
Great Oolite Group / Cornbrash Formation | Jurassic | |
Great Oolite Group / Forest Marble Formation | Jurassic | |
Great Oolite Group / Hampen Marly Formation | Jurassic | |
Great Oolite Group / Sharp's Hill Formation | Jurassic | |
Great Oolite Group / Taynton Limestone | Jurassic | |
Great Oolite Group / White Limestone | Jurassic | |
Great Scar Limestone Group / Ashfell Formation | Carboniferous | |
Great Scar Limestone Group / Danny Bridge Formation | Carboniferous | |
Greta Grit | Carboniferous | |
Habberley Shale | Ordovician | |
Hambleton Oolite Formation | Jurassic | |
Hampen Marly Formation | Jurassic | |
Hartshill Formation | Cambrian | |
Harwich Formation | Palaeogene | |
Hastings Formation | Cretaceous | |
Hastings Beds | Cretaceous | |
Hastings Beds Group / Wadhurst Clay | Cretaceous | |
Hastings Group / Grinstead Clay | Cretaceous | |
Headon Formation | Palaeogene | |
Headon Hill Formation | Palaeogene | |
Hempstead Formation | Palaeogene | |
Hilton Plant Beds | Permian | |
Holderness Formation | | |
Hope Shale | Ordovician | |
Hopedale Limestones Formation | Carboniferous | |
Hotwells Formation | Carboniferous | |
Inferior Oolite Formation | Jurassic | |
Inferior Oolite Group / Chipping Norton Limestone | Jurassic | |
Inferior Oolite Group / Middle Inferior Oolite Formation | Jurassic | |
Inferior Oolite Group / Northampton Sands | Jurassic | |
Inferior Oolite Group / Upper Inferior Oolite Formation | Jurassic | |
Infracombe Slates Group / Combe Martin Slates Formation | Devonian | |
Insect Bed Formation | Triassic | |
Iron Sands | Jurassic | |
Junction Bed Formation | Jurassic | |
Keisley Formation | Ordovician | |
Kimmeridge Clay | Jurassic | |
Kimmeridge Formation | Jurassic | |
Kirkby Moor Flags Formation | Silurian | |
Ledbury Formation | Silurian | |
Leintwardine Formation | Silurian | |
Leintwardine Beds | Silurian | |
Lias Formation | Jurassic, Triassic | |
Lias Group / Beacon Limestone Formation | Jurassic | |
Lias Group / Blue Lias Formation | Jurassic, Triassic | |
Lias Group / Charmouth Mudstone Formation | Jurassic | |
Lias Group / Dyrham Formation | Jurassic | |
Lias Group / Marlstone Rock Formation | Jurassic | |
Lias Group / Scunthorpe Mudstone Formation | Triassic | |
Lias Group / Whitby Mudstone Formation | Jurassic | |
Lincolnshire Limestone | Jurassic | |
Llanfallteg Formation | Ordovician | |
London Clay | Palaeogene | |
Lower Borland Shales | Carboniferous | |
Lower Calcareous Grit | Jurassic | |
Lower Chalk Formation | Cretaceous | |
Lower Chalk Group / Abbott's Cliff Formation | Cretaceous | |
Lower Chalk Group / Cambridge Greensand Formation | Cretaceous | |
Lower Chalk Group / Chalk Marl Formation | Cretaceous | |
Lower Comley Formation | Cambrian | |
Lower Ditton Formation | Devonian | |
Lower Greensand Formation | Cretaceous | |
Lower Greensand Group / Atherfield Clay | Cretaceous | |
Lower Greensand Group / Faringdon Sand Formation | Cretaceous | |
Lower Greensand Group / Ferruginous Sands | Cretaceous | |
Lower Greensand Group / Folkestone Formation | Cretaceous | |
Lower Greensand Group / Hythe Formation | Cretaceous | |
Lower Greensand Group / Sandgate Formation | Cretaceous | |
Lower Greensand Group / Woburn Sand Formation | Cretaceous | |
Lower Hamstead Beds | Palaeogene | |
Lower Headon Beds | Palaeogene | |
Lower Limestone Group / Great Scar Limestone | Carboniferous | |
Lower Marl Formation | Permian | |
Ludlow Formation | Silurian | |
Lulworth Formation | Cretaceous | |
Lynton Slates Formation | Devonian | |
Magnesian Conglomerate Formation | Triassic | |
Malton Oolite Formation | Jurassic | |
Mammaliferous Crag Formation | | |
Marl Slate Formation | Permian | |
Mercia Mudstone Group / Blue Anchor Formation | Triassic | |
Mercia Mudstone Group / Keuper Waterstones Formation | Triassic | |
Mercia Mudstone Group / Tarporley Siltstone Formation | Triassic | |
Merevale Shales | Ordovician | |
Middle Calcareous Grit | Jurassic | |
Middle Chalk Formation | Cretaceous | |
Middle Headon Beds | Palaeogene | |
Middle Inferior Oolite Formation | Jurassic | |
Middle Limestone Group / Five Yard Limestone VI Formation | Carboniferous | |
Middle Limestone Group / Five Yard Limestone VI Cyclothem Formation | Carboniferous | |
Middle Limestone Group / Five Yard Limestone VIa Formation | Carboniferous | |
Middle Limestone Group / Five Yard Limestone VIa Cyclothem Formation | Carboniferous | |
Middle Limestone Group / Five Yard Limestone VIb Formation | Carboniferous | |
Middle Limestone Group / Gayle Limestone Cyclothem Formation | Carboniferous | |
Middle Limestone Group / Gayle Limestone II Formation | Carboniferous | |
Middle Limestone Group / Gayle Shale | Carboniferous | |
Middle Limestone Group / Hardrow Scar Limestone III Formation | Carboniferous | |
Middle Limestone Group / Hardrow Scar Limestone III Cyclothem Formation | Carboniferous | |
Middle Limestone Group / Hardrow Scar Limestone IIIa Formation | Carboniferous | |
Middle Limestone Group / Hardrow Scar Limestone IIIb Formation | Carboniferous | |
Middle Limestone Group / Hardrow Scar Limestone IIIc Formation | Carboniferous | |
Middle Limestone Group / Hawes Limestone I Formation | Carboniferous | |
Middle Limestone Group / Middle Limestone V Formation | Carboniferous | |
Middle Limestone Group / Middle Limestone V Cyclothem Formation | Carboniferous | |
Middle Limestone Group / Middle Limestone Va Formation | Carboniferous | |
Middle Limestone Group / Middle Limestone Va Cyclothem Formation | Carboniferous | |
Middle Limestone Group / Simonstone Limestone IV Formation | Carboniferous | |
Middle Limestone Group / Simonstone Limestone IV Cyclothem Formation | Carboniferous | |
Middle Limestone Group / Simonstone Limestone IVa Formation | Carboniferous | |
Middle Limestone Group / Simonstone Limestone IVa Cyclothem Formation | Carboniferous | |
Middle Limestone Group / Simonstone Limestone IVb Formation | Carboniferous | |
Middle Limestone Group / Simonstone Limestone IVb Cyclothem Formation | Carboniferous | |
Middle Limestone Group / Simonstone Limestone IVc Formation | Carboniferous | |
Middle Limestone Group / Simonstone Limestone IVc Cyclothem Formation | Carboniferous | |
Middle Limestone Group / Three Yard Limestone VII Formation | Carboniferous | |
Middle Limestone Group / Three Yard Limestone VII Cyclothem Formation | Carboniferous | |
Middle Limestone Group / Underset Limestone VIII Formation | Carboniferous | |
Milldale Limestone | Carboniferous | |
Monsal Dale Limestones Formation | Carboniferous | |
Much Wenlock Formation | Silurian | |
Mytton Flag Formation | Ordovician | |
Mytton Flags and Tankerville Formation | Ordovician | |
Namurian Series Formation | Carboniferous | |
Norwich Crag Formation | Quaternary | |
Nothe Grits Formation | Jurassic | |
Ogof Hen Formation | Ordovician | |
Oldhaven Formation | Palaeogene | |
Oldhaven Beds | Palaeogene | |
Osborne Beds | Palaeogene | |
Osgodby Formation | Jurassic | |
Osmington Oolite Formation | Jurassic | |
Overton Formation | Silurian | |
Oxford Clay | Jurassic | |
Parrot Coal Formation | Carboniferous | |
Passage Beds | Jurassic | |
Penarth Group / Lilstock Formation | Triassic | |
Penarth Group / Westbury Formation | Triassic | |
Penarth Group / White Lias Formation | Jurassic, Triassic | |
Pendle Grit | Carboniferous | |
Penarth Group / Cotham Formation | Triassic | |
Penarth Group / Westbury Formation | Triassic | |
Petherwin Group / Baggy Formation | Devonian | |
Pilton Formation | Devonian | |
Pilton Shales | Carboniferous, Devonian | |
Pontyfenni Formation | Ordovician | |
Portland Formation | Jurassic | |
Portland Oolite Formation | Jurassic | |
Portland Group / Portland Stone Formation | Jurassic | |
Purbeck Formation | Cretaceous, Jurassic | |
Purbeck Group / Durlston Formation | Cretaceous | |
Purbeck Group / Lulworth Formation | Cretaceous, Jurassic | |
Ravenscar Formation | Jurassic | |
Ravenscar Group / Cloughton Formation | Jurassic | |
Ravenscar Group / Eller Beck Formation | Jurassic | |
Ravenscar Group / Lower Saltwick Formation | Jurassic | |
Ravenscar Group / Saltwick Formation | Jurassic | |
Ravenscar Group / Scalby Formation | Jurassic | |
Ravenscar Group / Scarborough Formation | Jurassic | |
Reading Beds | Palaeogene | |
Red Crag Formation | Neogene | |
Ringstead Coral Bed Formation | Jurassic | |
Roeburndale Formation | Carboniferous | |
Rutland Formation | Jurassic | |
Sabden Shale | Carboniferous | |
Saltwick Formation | Jurassic | |
Sandringham Sands | Jurassic | |
Sandringham Sandstone | Cretaceous | |
Sandsfoot Grit | Jurassic | |
Selborne Group / Gault Formation | Cretaceous | |
Selborne Group / Upper Greensand Formation | Cretaceous | |
Selsey Formation | Palaeogene | |
Sharp's Hill Formation | Jurassic | |
Sherwood Sandstone Group / Bromsgrove Sandstone | Triassic | |
Sherwood Sandstone Group / Otter Sandstone Formation | Triassic | |
Shunner Fell Formation | Carboniferous | |
Skegness Clay | Cretaceous | |
Solenopora Beds | Carboniferous | |
Solent Group / Bouldnor Formation | Palaeogene | |
Speeton Clay | Cretaceous | |
Spilsby Sandstone | Cretaceous, Jurassic | |
Stanford Formation | Jurassic | |
Stockdale Shales | Silurian | |
Suffolk Pebble Beds | Palaeogene | |
Tamar Group / Torquay Formation | Devonian | |
Tankerville Formation | Ordovician | |
Tarnbrook Wyre Marine Beds | Carboniferous | |
Temeside Shale | Silurian | |
Thanet Formation | Palaeogene | |
Blue Lias Formation | Jurassic | |
Torquay Limestone | Devonian | |
Trigonia clavellata Formation | Jurassic | |
Upnor Formation | Palaeogene | |
Upper Border Formation | Carboniferous | |
Upper Bowland Shales | Carboniferous | |
Upper Calcareous Grit | Jurassic | |
Upper Chalk Formation | Cretaceous | |
Upper Coal Measures Formation | Carboniferous | |
Upper Comley Formation | Cambrian | |
Upper Greensand Formation | Cretaceous | |
Upper Headon Beds | Palaeogene | |
Upper Limestone Group / Main Limestone IX Formation | Carboniferous | |
Upper Ludlow Formation | Silurian | |
Urswick Limestone | Carboniferous | |
Warwickshire Group / Kenilworth Sandstone | Permian | |
Waterhouses Limestone | Carboniferous | |
Weald Clay | Cretaceous | |
Weald Clay Group / Lower Weald Clay | Cretaceous | |
Weald Clay Group / Upper Weald Clay | Cretaceous | |
Wealden Formation | Cretaceous | |
Wealden Group / Ashdown Formation | Cretaceous | |
Wealden Group / Tunbridge Wells Sand Formation | Cretaceous | |
Wealden Group / Vectis Formation | Cretaceous | |
Wealden Group / Wadhurst Clay | Cretaceous | |
Wealden Group / Weald Formation | Cretaceous | |
Wealden Group / Weald Clay | Cretaceous | |
Wealden Group / Wessex Formation | Cretaceous | |
Weaver Beds | Carboniferous | |
Wenlock Formation | Silurian | |
Wenlock Shale | Silurian | |
Wessex Formation | Cretaceous | |
Westbury Formation | Triassic | |
Westbury Shales | Triassic | |
Weston Flags Formation | Ordovician | |
Weybourne Crag Formation | | |
Whitby Mudstone Formation | Jurassic | |
Whitcliffe Formation | Silurian | |
Whitcliffe Beds | Silurian | |
White Chalk Formation | Cretaceous | |
White Limestone | Jurassic | |
Wittering Formation | Palaeogene | |
Woolwich & Reading Beds | Palaeogene | |
Woolwich and Reading Formation | Palaeogene | |
Wych Beds | Silurian | |
Yeovil Sands | Jurassic | |
Yoredale Group / Alston Formation | Carboniferous | |
Zechstein Group / Marl Slate Formation | Permian | |