| 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 | |
