| label
|
instance of
|
image
|
temporal range start
|
temporal range end
|
underlies
|
overlies
|
interleaves with
|
| Abbott's Cliff Formation
|
formation
|
|
|
|
|
|
|
| Aber Mawr Shale
|
formation
|
|
|
|
|
|
|
| Aberystwyth Grits Group
|
group
|
|
|
|
|
|
|
| Afon Ffinnant Formation
|
formation
|
|
|
|
|
|
|
| Albion Glacigenic Group
|
formation
|
|
|
|
|
bedrock
|
|
| Allt Ddu Formation
|
formation
|
|
|
|
|
|
|
| Alston Formation
|
formation
|
|
|
|
|
|
|
| Alston Group
|
formation
|
|
|
|
|
|
|
| Ampthill Clay
|
formation
|
|
|
|
Kimmeridge Clay
|
West Walton Formation
|
|
| Ancholme Group
|
group
|
|
|
|
Portland Group
|
Great Oolite Group
|
|
| Anguilla Formation
|
formation
|
|
|
|
|
|
|
| Applecross Formation
|
formation
|
|
|
|
|
|
|
| Aran Volcanic Group
|
formation
|
|
|
|
|
|
|
| Arbuthnott Group
|
formation
|
|
|
|
|
|
|
| Arbuthnott-Garvock Group
|
group
|
|
|
|
|
|
|
| Ardvreck Group
|
group
|
|
|
|
Durness Group
|
Lewisian complex
|
|
| Ardwell Farm Formation
|
formation
|
|
|
|
|
|
|
| Ardwell Group
|
formation
|
|
|
|
|
|
|
| Argyll Group
|
formation
|
|
|
|
Southern Highland Group
|
Appin Group
|
|
| Ashdown Formation
|
formation
|
|
|
|
Wadhurst Clay Formation
|
Durlston Formation
|
|
| Ashfell Limestone
|
formation
|
|
|
|
|
|
|
| Ashgill Shale Formation
|
formation
|
|
|
|
Windermere Supergroup
|
|
|
| Atherfield Clay Formation
|
formation
|
|
|
|
Ferruginous Sands
|
Vectis Formation
Weald Clay
|
|
| Aultbea Formation
|
formation
|
|
|
|
|
|
|
| Aylesbeare Mudstone Group
|
group
|
|
|
|
|
|
|
| Aymestry Formation
|
formation
|
|
|
|
|
|
|
| Aymestry Limestone
|
formation
|
|
|
|
|
|
|
| Bacton Group
|
formation
|
|
|
|
Haisborough Group
|
Zechstein
|
|
| Baggy Sandstones
|
formation
|
|
|
|
|
|
|
| Bagshot Formation
|
formation
|
|
|
|
|
London Clay
|
|
| Bala Group
|
formation
|
|
|
|
|
|
|
| Balclatchie Formation
|
formation
|
|
|
|
|
|
|
| Balder Formation
|
formation
|
|
|
|
|
|
|
| Ballagan Formation
|
formation
|
|
|
|
|
Kinnesswood Formation
|
|
| Bardahessiagh Formation
|
formation
|
|
|
|
|
|
|
| Barton Beds
|
group
|
|
|
|
Headon Beds
|
|
|
| Barton Group
|
formation
|
|
|
|
Solent Group
|
Bracklesham Group
|
|
| Bath Oolite Formation
|
formation
|
|
|
|
|
|
|
| Beacon Limestone Formation
|
formation
|
|
|
|
Bridport Sand Formation
|
Dyrham Formation
|
|
| Bearreraig Sandstone Formation
|
formation
|
|
|
|
Cullaidh Shale Formation
|
|
|
| Becton-Sand Formation
|
formation
|
|
|
|
|
|
|
| Bee Low Limestones
|
formation
|
|
|
|
|
|
|
| Belemnite Marls
|
formation
|
|
|
|
|
|
|
| Bembridge Limestone
|
formation
|
|
|
|
|
|
|
| Bentham Grit
|
formation
|
|
|
|
|
|
|
| Berkshire Oolite
|
formation
|
|
|
|
|
|
|
| Black Rock Formation
|
formation
|
|
|
|
|
|
|
| Blackdown Greensand
|
formation
|
|
|
|
|
|
|
| Blackstokes Limestone
|
formation
|
|
|
|
|
|
|
| Blackwater Limestone
|
formation
|
|
|
|
|
|
|
| Blackwell Formation
|
formation
|
|
|
|
|
|
|
| Blaencediw Formation
|
formation
|
|
|
|
|
|
|
| Blisworth Clay Formation
|
formation
|
|
|
|
Cornbrash Formation
Kellaways Formation
|
Blisworth Limestone Formation
|
|
| Blisworth Limestone Formation
|
formation
|
|
Bathonian
|
Bathonian
|
Blisworth Clay Formation
|
Rutland Formation
|
|
| Blue Lias
|
formation
|
|
|
|
Charmouth Mudstone
|
Lilstock Formation
|
|
| Bod Deiniol Formation
|
formation
|
|
|
|
|
|
|
| Bodeidda Mudstone
|
formation
|
|
|
|
|
|
|
| Borrowdale Volcanic Group
|
group
|
|
|
|
Windermere Supergroup
|
Skiddaw Group
|
|
| Bouldnor Formation
|
formation
|
|
|
|
alluvium
|
|
|
| Bovey Formation
|
formation
|
|
|
|
alluvium
|
|
|
| Bowland Shale Formation
|
formation
|
|
|
|
Millstone Grit
|
|
|
| Bowmore Sandstone Group
|
group
|
|
|
|
|
|
|
| Bracklesham Group
|
group
|
|
|
|
Barton Group
|
Thames Group
|
|
| Brassington Formation
|
formation
|
|
|
|
alluvium
|
Carboniferous limestone
|
|
| Bridport Sand Formation
|
formation
|
|
|
|
Inferior Oolite
|
Beacon Limestone Formation
|
|
| Bringewood Beds
|
formation
|
|
|
|
|
|
|
| Britannia Catchments Group
|
formation
|
|
|
|
|
Albion Glacigenic Group
|
|
| British Coastal Deposits Group
|
formation
|
|
|
|
|
|
|
| Broadford Beds Formation
|
formation
|
|
|
|
|
|
|
| Brockenhurst Beds
|
formation
|
|
|
|
|
|
|
| Bromsgrove Sandstone
|
formation
|
|
|
|
|
|
|
| Bronydd Formation
|
formation
|
|
|
|
|
|
|
| Bryn Siltstone
|
formation
|
|
|
|
|
|
|
| Bu Ness Group
|
formation
|
|
|
|
|
|
|
| Builth Volcanic
|
formation
|
|
|
|
|
|
|
| Burwell Rock Formation
|
formation
|
|
|
|
|
|
|
| Caerfai Group
|
group
|
|
|
|
Solva Group
|
|
|
| Caithness Flagstone Group
|
group
|
|
|
|
Eday Group
|
Yesnaby Sandstone Group
|
|
| Calcareous Grit
|
formation
|
|
|
|
|
|
|
| Caledonia Glacigenic Group
|
formation
|
|
|
|
Britannia Catchments Group
|
|
|
| Camnant Mudstone
|
formation
|
|
|
|
|
|
|
| Carmarthen Formation
|
formation
|
|
|
|
|
|
|
| Carmarthen Group
|
formation
|
|
|
|
|
|
|
| Carnedd Iago Formation
|
formation
|
|
|
|
|
|
|
| Carrickaness Sandstone
|
formation
|
|
|
|
|
|
|
| Carstone Formation
|
formation
|
|
Albian
|
Albian
|
Hunstanton Formation
|
|
|
| Caton Shales
|
formation
|
|
|
|
|
|
|
| Chalk Group
|
group
|
|
|
|
unconformity
|
Selborne Group
|
|
| Chalk Marl
|
formation
|
|
|
|
|
|
|
| Charmouth Mudstone
|
formation
|
|
|
|
Dyrham Formation
|
Blue Lias
|
|
| Chatwell Flags
|
formation
|
|
|
|
|
|
|
| Chee Tor Limestone
|
formation
|
|
|
|
|
|
|
| Cheney Longville Formation
|
formation
|
|
|
|
|
|
|
| Chillesford Clay
|
formation
|
|
|
|
|
|
|
| Chipping Norton Formation
|
formation
|
|
|
|
|
|
|
| Chipping Norton Limestone
|
formation
|
|
|
|
Fullers Earth Formation
|
Grantham Formation
|
|
| Clackmannan Group
|
group
|
|
|
|
Coal Measures Group
|
Strathclyde Group
|
|
| Claerwen Group
|
group
|
|
|
|
|
|
|
| Claxby Ironstone
|
formation
|
|
|
|
|
|
|
| Clay-with-Flints
|
formation
|
|
|
|
|
|
|
| Cleveland Ironstone Formation
|
formation
|
|
|
|
Whitby Mudstone Formation
|
Staithes Sandstone Formation
|
|
| Clifton Down Limestone
|
formation
|
|
|
|
|
|
|
| Cloughton Formation
|
formation
|
|
|
|
Scarborough Formation
|
Eller Beck Formation
|
|
| Coal Measures Group
|
group
|
|
|
|
Warwickshire Group
|
|
|
| Coalbrookdale Formation
|
formation
Konservatlagerstätte
lagerstätte
|
|
|
|
|
|
|
| Cockhill Marine Band
|
formation
|
|
|
|
|
|
|
| Colonsay Group
|
group
|
|
|
|
|
|
|
| Colsterdale Marine Beds
|
formation
|
|
|
|
|
|
|
| Combe Martin Slates
|
formation
|
|
|
|
|
|
|
| Comley limestone
|
formation
|
|
|
|
|
|
|
| Coomb Volcanic Formation
|
formation
|
|
|
|
|
|
|
| Coral Rag Formation
|
formation
|
|
|
|
|
|
|
| Corallian Group
|
formation
|
|
|
|
Kimmeridge Clay
|
Oxford Clay Formation
|
|
| Corallian Oolite Formation
|
formation
|
|
|
|
|
|
|
| Coralline Crag Formation
|
formation
|
|
|
|
|
|
|
| Cornbrash Formation
|
formation
|
|
|
|
Kellaways Formation
|
Forest Marble Formation
Blisworth Clay Formation
Scalby Formation
|
|
| Corncockle Sandstone Formation
|
formation
|
|
|
|
|
|
|
| Corralline Crag Formation
|
formation
|
|
|
|
|
|
|
| Corsham Limestone Formation
|
formation
|
|
|
|
Forest Marble Formation
|
|
|
| Corton Formation
|
formation
|
|
|
|
|
|
|
| Cotham Formation
|
formation
|
|
|
|
|
|
|
| Cotswold Slate
|
formation
|
|
|
|
|
|
|
| Cowie Formation
|
formation
|
|
|
|
|
|
|
| Crag Group
|
group
|
|
Pliocene
|
Pleistocene
|
Dunwich Group
|
unconformity
|
|
| Craighead Limestone
|
formation
|
|
|
|
|
|
|
| Creechbarrow Limestone
|
formation
|
|
|
|
|
|
|
| Croisaphuill Formation
|
formation
|
|
|
|
|
|
|
| Cromer Forest Bed
|
formation
|
|
|
|
|
|
|
| Cromer Knoll Formation
|
formation
|
|
|
|
|
|
|
| Cromer Knoll Group
|
group
|
|
Berriasian
|
Albian
|
|
|
|
| Crossdale Shales
|
formation
|
|
|
|
|
|
|
| Crugan Mudstone
|
formation
|
|
|
|
|
|
|
| Crychan Formation
|
formation
|
|
|
|
|
|
|
| Cullaidh Shale Formation
|
formation
|
|
|
|
Elgol Sandstone Formation
|
Bearreraig Sandstone Formation
|
|
| Culm Measures
|
facies
supergroup
|
|
|
|
|
|
|
| Cumbrian Coast Group
|
group
|
|
|
|
Sherwood Sandstone Group
|
Appleby Group
|
|
| Cutties Hillock Sandstone
|
formation
|
|
|
|
|
Devonian
|
|
| Cwm Felin Boeth Formation
|
formation
|
|
|
|
|
|
|
| Cwmystwyth Grits Group
|
group
|
|
|
|
|
Claerwen Group
|
|
| Cymerig Limestone
|
formation
|
|
|
|
|
|
|
| Cyrn Formation
|
formation
|
|
|
|
|
|
|
| Danny Bridge Formation
|
formation
|
|
|
|
|
|
|
| Dartmouth Beds
|
formation
|
|
|
|
|
|
|
| Dartmouth Group
|
formation
|
|
|
|
Meadfoot Group
|
|
|
| Denbury Crinoidal Limestone
|
formation
|
|
|
|
|
|
|
| Dent Group
|
formation
|
|
|
|
Stockdale Group
|
Borrowdale Volcanic Group
|
|
| Derbyshire Dome
|
formation
|
|
|
|
|
|
|
| Derfel Limestone
|
formation
|
|
|
|
|
|
|
| Diabaig Formation
|
formation
|
|
|
|
|
|
|
| Ditton Formation
|
formation
|
|
|
|
|
|
|
| Dol Formation
|
formation
|
|
|
|
|
|
|
| Dolhir Formation
|
formation
|
|
|
|
|
|
|
| Dounans Limestone
|
formation
|
|
|
|
|
|
|
| Downton Castle Sandstone
|
formation
|
|
|
|
|
|
|
| Downton Group
|
formation
|
|
|
|
|
|
|
| Drefach Group
|
group
|
|
|
|
|
|
|
| Drummock Group
|
formation
|
|
|
|
|
|
|
| Dryden Shale
|
formation
|
|
|
|
|
|
|
| Dufton Shales
|
formation
|
|
|
|
|
|
|
| Duntulm Formation
|
formation
|
|
|
|
Kilmaluag Formation
|
Valtos Sandstone Formation
|
|
| Dunwich Group
|
formation
|
|
|
|
Albion Glacigenic Group
|
Crag Group
|
|
| Durlston Formation
|
formation
|
|
|
|
Wessex Formation
Ashdown Formation
|
Lulworth Formation
|
|
| Durness Group
|
group
|
|
|
|
Moine Supergroup
|
|
|
| Duyfor Mudstone
|
formation
|
|
|
|
|
|
|
| Dyrham Formation
|
formation
|
|
|
|
Beacon Limestone Formation
|
Charmouth Mudstone
|
|
| Dyserth Quarry Limestone
|
formation
|
|
|
|
|
|
|
| Earnley Formation
|
formation
|
|
|
|
|
|
|
| East Kirkton Limestone
|
formation
|
|
|
|
|
|
|
| East Ogwell Limestone
|
formation
|
|
|
|
|
|
|
| Eday Group
|
group
|
|
|
|
|
Caithness Flagstone Group
|
|
| Eggardon Grit
|
formation
|
|
|
|
|
|
|
| Elgol Sandstone Formation
|
formation
|
|
|
|
Lealt Shale Formation
|
Cullaidh Shale Formation
|
|
| Eller Beck Formation
|
formation
|
|
|
|
Cloughton Formation
|
Saltwick Formation
|
|
| Elmore Formation
|
formation
|
|
|
|
|
|
|
| Elton Beds
|
formation
|
|
|
|
|
|
|
| Estheria Shales Formation
|
formation
|
|
|
|
|
|
|
| Exeter Group
|
group
|
|
|
|
Aylesbeare Mudstone Group
|
Holsworthy Group
|
|
| Exmoor Group
|
formation
|
|
|
|
|
|
|
| Eyam Limestone
|
formation
|
|
|
|
|
|
|
| Eycott Volcanic Group
|
formation
|
|
|
|
unconformity
|
Skiddaw Group
|
|
| Faringdon Sand
|
formation
|
|
|
|
|
|
|
| Farne Group
|
formation
|
|
|
|
|
|
|
| Ferruginous Sands
|
formation
|
|
|
|
Sandrock Formation
|
Atherfield Clay Formation
|
|
| Ffestiniog Flags
|
formation
|
|
|
|
|
|
|
| Fishguard Volcanic Group
|
group
|
|
|
|
unconformity
|
Aber Mawr Shale
|
|
| Foel Formation
|
formation
|
|
|
|
|
|
|
| Forest Hollow Beds
|
formation
|
|
|
|
|
|
|
| Forest Marble Formation
|
formation
|
|
Bathonian
|
Bathonian
|
Cornbrash Formation
|
White Limestone Formation
|
|
| Frome Clay
|
formation
|
|
|
|
Forest Marble Formation
|
Fullers Earth Formation
|
|
| Fullers Earth Formation
|
formation
|
|
|
|
Frome Clay
|
Chipping Norton Limestone
|
|
| Furse Argillaceous Beds
|
formation
|
|
|
|
|
|
|
| Garlton Hills Volcanics
|
formation
|
|
|
|
|
|
|
| Gault
|
formation
|
|
|
|
Upper Greensand Formation
|
Monk's Bay Sandstone Formation
|
|
| Gayle Shale
|
formation
|
|
|
|
|
|
|
| Gelli Formation
|
formation
|
|
|
|
|
|
|
| Glauconitic Marl
|
formation
|
|
|
|
|
|
|
| Glencar Formation
|
formation
|
|
|
|
|
|
|
| Glyn Gower Formation
|
formation
|
|
|
|
|
|
|
| Graig Formation
|
formation
|
|
|
|
|
|
|
| Grampian Group
|
group
|
|
|
|
Appin Group
|
|
|
| Grantham Formation
|
formation
|
|
|
|
Lincolnshire Limestone
|
Northampton Sands Formation
|
|
| Great Britain Superficial Deposits Supergroup
|
formation
|
|
|
|
|
Neogene
|
|
| Great Estuarine Group
|
group
|
|
|
|
Staffin Bay Formation
|
Bearreraig Sandstone Formation
|
|
| Great Oolite Group
|
group
|
|
Bathonian
|
Bathonian
|
Ancholme Group
|
Inferior Oolite
|
|
| Great Scar Limestone
|
formation
|
|
|
|
|
|
|
| Great Scar Limestone Group
|
formation
|
|
|
|
|
Ravenstonedale Group
|
|
| Greta Grit
|
formation
|
|
|
|
|
|
|
| Grey Downtonian
|
formation
|
|
|
|
|
|
|
| Gronant Formation
|
formation
|
|
|
|
|
|
|
| Gullane Formation
|
formation
|
|
|
|
|
|
|
| Habberley Shale
|
formation
|
|
|
|
|
|
|
| Hambleton Oolite
|
formation
|
|
|
|
|
|
|
| Hampen Marly Formation
|
formation
|
|
|
|
White Limestone Formation
|
Taynton Limestone Formation
|
|
| Harlech Grits Group
|
group
|
|
|
|
Mawddach Group
|
|
|
| Hartshill Formation
|
formation
|
|
|
|
|
|
|
| Harwish Formation
|
formation
|
|
|
|
London Clay
|
Lambeth Group
|
|
| Hastings Beds
|
group
|
|
|
|
Weald Clay
|
|
|
| Haverford Formation
|
formation
|
|
|
|
|
|
|
| Haverford Mudstone
|
formation
|
|
|
|
|
|
|
| Headon Beds
|
formation
|
|
|
|
|
Barton Group
|
|
| Headon Hill Formation
|
formation
|
|
|
|
|
|
|
| Headon-Hill Formation
|
formation
|
|
|
|
|
|
|
| Hempstead Formation
|
formation
|
|
|
|
|
|
|
| Hibernian Greensands Group
|
group
|
|
|
|
Ulster White Limestone Group
|
|
|
| High Tor Limestone
|
formation
|
|
|
|
|
|
|
| Hillhead Formation
|
formation
|
|
|
|
|
|
|
| Hilton Plant Beds
|
formation
|
|
|
|
|
|
|
| Hirnant Limestone
|
formation
|
|
|
|
|
|
|
| Holderness Formation
|
formation
|
|
|
|
|
|
|
| Holsworthy Group
|
formation
|
|
|
|
Exeter Group
|
Teign Valley Group
|
|
| Hope Shale
|
formation
|
|
|
|
|
|
|
| Hopedale Limestones
|
formation
|
|
|
|
|
|
|
| Hopeman Sandstone Formation
|
formation
|
|
|
|
|
Devonian
|
|
| Horse Road Sandstone
|
formation
|
|
|
|
|
|
|
| Horsehay Sand Formation
|
formation
|
|
|
|
Sharp's Hill Formation
|
Northampton Sands Formation
|
|
| Hotwells Formation
|
formation
|
|
|
|
|
|
|
| Hughley Shale
|
formation
|
|
|
|
|
|
|
| Hunstanton Formation
|
formation
|
|
Albian
|
Cenomanian
|
Chalk Group
|
Speeton Clay Formation
Carstone Formation
Kellaways Formation
|
|
| Hunts Bay Oolite
|
formation
|
|
|
|
|
|
|
| Infracombe Slates Group
|
formation
|
|
|
|
|
|
|
| Ingleton Group
|
group
|
|
|
|
|
|
|
| Inner Hebrides Group
|
group
|
|
|
|
|
|
|
| Inshes Formation
|
formation
|
|
|
|
|
|
|
| Iron Sands
|
formation
|
|
|
|
|
|
|
| Junction Bed
|
formation
|
|
|
|
|
|
|
| Keisley Limestone
|
formation
|
|
|
|
|
|
|
| Kellaways Formation
|
formation
|
|
|
|
Oxford Clay Formation
Hunstanton Formation
|
Cornbrash Formation
Blisworth Clay Formation
|
|
| Keuper Waterstones
|
formation
|
|
|
|
|
|
|
| Keuper Waterstones Formation
|
formation
|
|
|
|
|
|
|
| Keuper marl
|
formation
|
|
|
|
|
|
|
| Killey Bridge Formation
|
formation
|
|
|
|
|
|
|
| Kilmaluag Formation
|
formation
|
|
|
|
Skudiburgh Formation
|
Duntulm Formation
|
|
| Kimmeridge Clay
|
formation
|
|
|
|
Portland Group
Speeton Clay Formation
|
Ampthill Clay
|
|
| Kimmeridge Clay Formation
|
formation
|
|
|
|
|
|
|
| Kingston Formation
|
formation
|
|
|
|
Stanford Formation
|
West Walton Formation
|
|
| Kinnesswood Formation
|
formation
|
|
|
|
Ballagan Formation
|
|
|
| Kip Burn Formation
|
formation
|
|
|
|
|
|
|
| Kirkby Moor Flags
|
formation
|
|
|
|
|
|
|
| Kirkcolm Formation
|
formation
|
|
|
|
|
|
|
| Knipe Scar Limestone
|
formation
|
|
|
|
|
|
|
| Ladyburn Formation
|
formation
|
|
|
|
|
|
|
| Lambeth Group
|
group
|
|
|
|
Thames Group
|
Thanet Formation
|
|
| Lawmuir Formation
|
formation
|
|
|
|
|
|
|
| Lealt Shale Formation
|
formation
|
|
|
|
Valtos Sandstone Formation
|
Elgol Sandstone Formation
|
|
| Ledbury Formation
|
formation
|
|
|
|
|
|
|
| Leete Limestone
|
formation
|
|
|
|
|
|
|
| Leintwardine Beds
|
formation
|
|
|
|
|
|
|
| Lias Group
|
group
|
|
|
|
|
|
|
| Lilstock Formation
|
formation
|
|
|
|
Blue Lias
|
Westbury Formation
|
|
| Lincolnshire Limestone
|
formation
|
|
|
|
Rutland Formation
|
Grantham Formation
|
|
| Llanarmon Limestone
|
formation
|
|
|
|
|
|
|
| Llanbedrog Volcanic Group
|
group
|
|
|
|
|
|
|
| Llandeilo
|
group
stage
|
|
|
|
|
|
|
| Llandeilo Formation
|
formation
|
|
|
|
|
|
|
| Llandovery Group
|
group
|
|
|
|
|
|
|
| Llandudno Pier Dolomite
|
formation
|
|
|
|
|
|
|
| Llanelly Formation
|
formation
|
|
|
|
|
|
|
| Llanfallteg Formation
|
formation
|
|
|
|
|
|
|
| Llanfawr Mudstone
|
formation
|
|
|
|
|
|
|
| Llewelyn Volcanic Group
|
group
|
|
|
|
|
Nant Ffrancon formation
|
|
| Llwyn Formation
|
formation
|
|
|
|
|
|
|
| Llyn y Gafr Formation
|
formation
|
|
|
|
|
|
|
| Locharbriggs Sandstone Formation
|
formation
|
|
|
|
|
unconformity
|
|
| London Clay
|
formation
|
|
|
|
Bagshot Formation
|
Harwish Formation
|
|
| Longmyndian Supergroup
|
supergroup
|
|
|
|
|
|
|
| Lossie Mouth Sandstone Formation
|
formation
|
|
|
|
|
|
|
| Lossiemouth Sandstone
|
formation
|
|
|
|
|
|
|
| Lower Greensand Group
|
group
|
|
|
|
Selborne Group
|
Wealden
|
|
| Ludlow Group
|
group
|
|
|
|
|
|
|
| Lulworth Formation
|
formation
|
|
|
|
Durlston Formation
|
Portland Group
|
|
| Lynton Slates
|
formation
|
|
|
|
|
|
|
| Magnesian Conglomerate
|
formation
|
|
|
|
|
|
|
| Malton Oolite
|
formation
|
|
|
|
|
|
|
| Mammaliferous Crag Formation
|
formation
|
|
|
|
|
|
|
| Manse Burn Formation
|
formation
|
|
|
|
|
|
|
| Marl Slate
|
formation
|
|
|
|
|
|
|
| Marros Group
|
group
|
|
|
|
Coal Measures Group
|
Pembroke Limestone Group
|
|
| Marsh Farm Formation
|
formation
|
|
|
|
|
|
|
| Mauchline Volcanic Formation
|
formation
|
|
|
|
|
|
|
| Mawddach Group
|
group
|
|
|
|
|
Harlech Grits Group
|
|
| May Hill Sandstone
|
formation
|
|
|
|
|
|
|
| Maydown Limestone
|
formation
|
|
|
|
|
|
|
| Meadfoot Group
|
group
|
|
|
|
|
Dartmouth Group
|
|
| Mercia Mudstone Group
|
group
|
|
|
|
Penarth Group
|
Sherwood Sandstone Group
|
|
| Merevale Shales
|
formation
|
|
|
|
|
|
|
| Milford Haven Formation
|
formation
|
|
|
|
|
|
|
| Milford Haven Group
|
formation
|
|
|
|
Cosheston Group
|
|
|
| Mill Formation
|
formation
|
|
|
|
|
|
|
| Millbuie Sandstone
|
formation
|
|
|
|
|
|
|
| Milldale Limestone
|
formation
|
|
|
|
|
|
|
| Moel Hiraddug Limestone
|
formation
|
|
|
|
|
|
|
| Moine Supergroup
|
supergroup
|
|
|
|
|
|
|
| Monk's Bay Sandstone Formation
|
formation
|
|
|
|
Gault
|
Sandrock Formation
|
|
| Monsal Dale Limestones
|
formation
|
|
|
|
|
|
|
| Montrose Group
|
group
|
|
|
|
Moray Group
|
Chalk Group
|
|
| Moray Group
|
group
|
|
|
|
|
Montrose Group
|
|
| Much Wenlock Limestone Formation
|
formation
|
|
|
|
|
|
|
| Mulloch Hill Sandstone
|
formation
|
|
|
|
|
|
|
| Mytton Flag Formation
|
formation
|
|
|
|
|
|
|
| Namurian Series
|
formation
|
|
|
|
|
|
|
| Nant Ffrancon formation
|
formation
|
|
|
|
|
|
|
| Nant Hir Formation
|
formation
|
|
|
|
|
|
|
| Nant Hir Group
|
formation
|
|
|
|
|
|
|
| New Red Sandstone
|
formation
|
|
|
|
|
|
|
| Newlands Group
|
formation
|
|
|
|
|
|
|
| Nod Glas Formation
|
formation
|
|
|
|
|
|
|
| Northampton Sands
|
formation
|
|
|
|
|
|
|
| Northampton Sands Formation
|
formation
|
|
|
|
Grantham Formation
|
Whitby Mudstone Formation
|
|
| Norwich Crag Formation
|
formation
|
|
|
|
|
Red Crag Formation
|
|
| Nothe Grits
|
formation
|
|
|
|
|
|
|
| Observatory Group
|
formation
|
|
|
|
|
|
|
| Ogof Hen Formation
|
formation
|
|
|
|
|
|
|
| Old Red Sandstone
|
supergroup
|
|
Wenlock
|
Emsian
|
|
|
|
| Oldhaven Beds
|
formation
|
|
|
|
|
|
|
| Oldhaven Formation
|
formation
|
|
|
|
|
|
|
| Onny Shale
|
formation
|
|
|
|
|
|
|
| Orchard Limestone
|
formation
|
|
|
|
|
|
|
| Osborne Beds
|
formation
|
|
|
|
|
|
|
| Osgodby Formation
|
formation
|
|
|
|
|
|
|
| Osmington Oolite
|
formation
|
|
|
|
|
|
|
| Otter Sandstone
|
formation
|
|
|
|
|
|
|
| Overton Formation
|
formation
|
|
|
|
|
|
|
| Oxford Clay Formation
|
formation
|
|
|
|
West Walton Formation
|
Kellaways Formation
|
|
| Parrot Coal
|
formation
|
|
|
|
|
|
|
| Passage Beds
|
formation
|
|
|
|
|
|
|
| Passage Formation
|
formation
|
|
|
|
|
|
|
| Patrick Burn Formation
|
formation
|
|
|
|
|
|
|
| Pebidian Supergroup
|
supergroup
|
|
|
|
|
|
|
| Penarth Group
|
group
|
|
|
|
Lias Group
|
Mercia Mudstone Group
|
|
| Pendle Grit
|
formation
|
|
|
|
|
|
|
| Penkill Formation
|
formation
|
|
|
|
|
|
|
| Penkill Group
|
formation
|
|
|
|
|
|
|
| Petherwin Group
|
formation
|
|
|
|
|
|
|
| Pettycur Volcanics
|
formation
|
|
|
|
|
|
|
| Pilton Formation
|
formation
|
|
|
|
|
|
|
| Pilton Shales
|
formation
|
|
|
|
|
|
|
| Plas Uchaf Formation
|
formation
|
|
|
|
|
|
|
| Pontyfenni Formation
|
formation
|
|
|
|
|
|
|
| Port Askaig Formation
|
formation
|
|
|
|
|
|
|
| Potts Beck Limestone
|
formation
|
|
|
|
|
|
|
| Priesthill Group
|
formation
|
|
|
|
|
|
|
| Purbeck Group
|
group
facies
|
|
|
|
Wealden
Urgonian Limestone Formation
|
Portland Group
|
|
| Railway stations of Aberdeen
|
group
|
|
|
|
|
|
|
| Ravenscar Group
|
group
|
|
|
|
Cornbrash Formation
|
|
|
| Reading Formation
|
formation
|
|
|
|
Harwish Formation
|
Upnor Formation
|
|
| Red Crag Formation
|
formation
|
|
|
|
Norwich Crag Formation
|
|
|
| Redcar Mudstone Formation
|
formation
|
|
|
|
Staithes Sandstone Formation
|
Lilstock Formation
|
|
| Redhill Mudstone
|
formation
|
|
|
|
|
|
|
| Residual Deposits Group
|
formation
|
|
|
|
|
|
|
| Rhaetic Beds
|
formation
|
|
|
|
Lias Formation
|
Keuper Formation
|
|
| Rhiwlas Formation
|
formation
|
|
|
|
|
|
|
| Rhiwlas Limestone
|
formation
|
|
|
|
|
|
|
| Rhynie chert
|
formation
|
|
|
|
|
|
|
| Ringstead Coral Bed
|
formation
|
|
|
|
|
|
|
| Roeburndale Formation
|
formation
|
|
|
|
|
|
|
| Rushall Formation
|
formation
|
|
|
|
|
|
|
| Rutland Formation
|
formation
|
|
|
|
Blisworth Limestone Formation
White Limestone Formation
|
Lincolnshire Limestone
|
|
| Sabden Shale
|
formation
|
|
|
|
|
|
|
| Saltwick Formation
|
formation
|
|
|
|
Eller Beck Formation
|
|
|
| Sandringham Sandstone
|
formation
|
|
|
|
|
|
|
| Sandrock Formation
|
formation
|
|
|
|
Monk's Bay Sandstone Formation
|
Ferruginous Sands
|
|
| Sandsfoot Grit
|
formation
|
|
|
|
|
|
|
| Sandwick Fish Beds
|
formation
|
|
|
|
|
|
|
| Saugh Hill Grits
|
formation
|
|
|
|
|
|
|
| Saugh Hill Group
|
formation
|
|
|
|
|
|
|
| Scalby Formation
|
formation
|
|
|
|
Cornbrash Formation
|
Scarborough Formation
|
|
| Scalpa Sandstone
|
formation
|
|
|
|
|
|
|
| Scarborough Formation
|
formation
|
|
|
|
Scalby Formation
|
Cloughton Formation
|
|
| Scremerston Formation
|
formation
|
|
|
|
|
|
|
| Scunthorpe Mudstone
|
formation
|
|
|
|
|
|
|
| Selborne Group
|
formation
|
|
|
|
Chalk Group
|
Lower Greensand Group
|
|
| Selsey Formation
|
formation
|
|
|
|
|
|
|
| Senni Beds
|
formation
|
|
|
|
|
|
|
| Shalloch Formation
|
formation
|
|
|
|
|
|
|
| Sharp's Hill Formation
|
formation
|
|
|
|
Taynton Limestone Formation
|
Chipping Norton Limestone
|
|
| Sherwood Sandstone Group
|
group
|
|
|
|
Mercia Mudstone Group
|
|
|
| Sholeshook Limestone
|
formation
|
|
|
|
|
|
|
| Shunner Fell Formation
|
formation
|
|
|
|
|
|
|
| Silver Pit
|
formation
|
|
|
|
|
|
|
| Skegness Clay
|
formation
|
|
|
|
|
|
|
| Skiddaw Group
|
group
rock formation
|
|
|
|
Borrowdale Volcanic Group
|
|
|
| Skiddaw Slate
|
formation
|
|
|
|
|
|
|
| Skudiburgh Formation
|
formation
|
|
|
|
Staffin Bay Formation
|
Kilmaluag Formation
|
|
| Slade Mudstone
|
formation
|
|
|
|
|
|
|
| Slot Burn Formation
|
formation
|
|
|
|
|
|
|
| Snowdon Volcanic Group
|
group
|
|
|
|
|
|
|
| Solent Group
|
group
|
|
|
|
Quaternary
|
Barton Group
|
|
| Solva Group
|
group
|
|
|
|
Menevian Group
|
Caerfai Group
|
|
| South Stack Formation
|
formation
|
|
|
|
|
|
|
| South Threave Formation
|
formation
|
|
|
|
|
|
|
| South Wales Coal Measures Group
|
group
|
|
|
|
Warwickshire Group
|
Marros Group
|
|
| Southern England Chalk Formation
|
formation
|
|
|
|
|
|
|
| Speeton Clay Formation
|
formation
|
|
|
|
Hunstanton Formation
|
Kimmeridge Clay
|
|
| Spencer's Point Formation
|
formation
|
|
|
|
|
|
|
| Spilsby Sandstone
|
formation
|
|
|
|
|
|
|
| Spring Quarry Limestone
|
formation
|
|
|
|
|
|
|
| St. Maughan's Formation
|
formation
|
|
|
|
|
|
|
| Staffin Bay Formation
|
formation
|
|
|
|
|
Skudiburgh Formation
|
|
| Staithes Sandstone Formation
|
formation
|
|
|
|
Cleveland Ironstone Formation
|
Redcar Mudstone Formation
|
|
| Stanford Formation
|
formation
|
|
|
|
Ampthill Clay
|
Kingston Formation
|
|
| Stinchar Limestone
|
formation
|
|
|
|
|
|
|
| Stoer Group
|
group
|
|
|
|
|
|
|
| Stonehaven Group
|
group
|
|
|
|
|
|
|
| Strathclyde Group
|
group
|
|
|
|
|
|
|
| Suffolk Pebble Beds
|
formation
|
|
|
|
|
|
|
| Tamar Group
|
formation
|
|
|
|
|
Meadfoot Group
|
|
| Tankerville Formation
|
formation
|
|
|
|
|
|
|
| Tarnbrook Wyre Marine Beds
|
formation
|
|
|
|
|
|
|
| Taynton Limestone
|
formation
|
|
|
|
|
|
|
| Taynton Limestone Formation
|
formation
|
|
Bathonian
|
Bathonian
|
Hampen Marly Formation
|
Fullers Earth Formation
|
|
| Teign Valley Group
|
group
|
|
|
|
Holsworthy Group
|
Exmoor Group
|
|
| Temeside Shale
|
formation
|
|
|
|
|
|
|
| Thames Group
|
formation
|
|
|
|
Bracklesham Group
|
Oldhaven Formation
|
|
| Thanet Formation
|
formation
|
|
|
|
Lambeth Group
|
Chalk Group
|
|
| Thurso Flagstone
|
formation
|
|
|
|
|
|
|
| Tirnaskea Formation
|
formation
|
|
|
|
|
|
|
| Top Hosie Shale
|
formation
|
|
|
|
|
|
|
| Torquay Limestone
|
formation
|
|
|
|
|
|
|
| Torridon Group
|
group
|
|
|
|
|
|
|
| Trefawr Formation
|
formation
|
|
|
|
|
|
|
| Treiorwerth Formation
|
formation
|
|
|
|
|
|
|
| Tunbridge Wells Sand Formation
|
formation
|
|
|
|
Weald Clay
|
Wadhurst Clay Formation
|
|
| Ty Formation
|
formation
|
|
|
|
|
|
|
| Tyne Limestone
|
formation
|
|
|
|
|
|
|
| Ulster White Limestone Group
|
group
|
|
|
|
Paleogene
|
Hibernian Greensands Group
|
|
| Upnor Formation
|
formation
|
|
|
|
Reading Formation
|
Thanet Formation
|
|
| Upper Greensand Formation
|
formation
|
|
Albian
|
Cenomanian
|
Chalk Group
|
Gault
|
|
| Urswick Limestone
|
formation
|
|
|
|
|
|
|
| Valtos Sandstone
|
formation
|
|
|
|
|
|
|
| Valtos Sandstone Formation
|
formation
|
|
|
|
Duntulm Formation
|
Lealt Shale Formation
|
|
| Vectis Formation
|
formation
|
|
Barremian
|
Aptian
|
Atherfield Clay Formation
|
Wessex Formation
|
|
| Wadhurst Clay Formation
|
formation
|
|
|
|
Tunbridge Wells Sand Formation
|
Ashdown Formation
|
|
| Wardie Shale
|
formation
|
|
|
|
|
|
|
| Warwickshire Group
|
group
|
|
|
|
|
Coal Measures Group
|
|
| Waterhead Group
|
formation
|
|
|
|
|
|
|
| Waterhouses Limestone
|
formation
|
|
|
|
|
|
|
| Weald Clay
|
formation
|
|
|
|
Atherfield Clay Formation
|
Tunbridge Wells Sand Formation
|
|
| Weaver Beds
|
formation
|
|
|
|
|
|
|
| Wenallt Formation
|
formation
|
|
|
|
|
|
|
| Wenlock Shale
|
formation
|
|
|
|
|
|
|
| Wentnor Group
|
group
|
|
|
|
|
|
|
| Wessex Formation
|
formation
|
|
|
|
Vectis Formation
|
Durlston Formation
|
|
| West Walton Formation
|
formation
|
|
|
|
Ampthill Clay
|
Oxford Clay Formation
|
|
| Westbury Formation
|
formation
|
|
|
|
Lilstock Formation
|
Mercia Mudstone Group
|
|
| Westbury Shales
|
formation
|
|
|
|
|
|
|
| Weston Flags
|
formation
|
|
|
|
|
|
|
| Weybourne Crag Formation
|
formation
|
|
|
|
|
|
|
| Whitby Mudstone Formation
|
formation
|
|
|
|
Inferior Oolite
|
Cleveland Ironstone Formation
|
|
| Whitchurch Sand Formation
|
formation
|
|
|
|
Gault
|
|
|
| Whitcliffe Formation
|
formation
|
|
|
|
|
|
|
| White Chalk Formation
|
formation
|
|
|
|
|
|
|
| White Limestone Formation
|
formation
|
|
|
|
Forest Marble Formation
|
Rutland Formation
|
|
| Whitehouse Group
|
formation
|
|
|
|
|
|
|
| Wick Flagstone
|
formation
|
|
|
|
|
|
|
| Windermere Supergroup
|
supergroup
|
|
|
|
|
Ashgill Shale Formation
|
|
| Wittering Formation
|
formation
|
|
|
|
|
London Clay
|
|
| Woburn Sands Formation
|
formation
|
|
|
|
Gault
|
Jurassic
|
|
| Woolhope Limestone
|
formation
|
|
|
|
|
|
|
| Woolwich Formation
|
formation
|
|
|
|
Harwish Formation
|
Upnor Formation
|
|
| Wych Beds
|
formation
paleontological site
|
|
|
|
|
|
|
| Yeovil Sands
|
formation
|
|
|
|
|
|
|
| Yesnaby Sandstone Group
|
group
|
|
|
|
Caithness Flagstone Group
|
|
|
| Zechstein
|
group
facies
|
|
|
|
Buntsandstein
|
Rotliegend
|
|
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