Geological Timeline, Jurassic - showing detailed stratigraphy for each period

Portlandian 142 to 147 MYA
Purbeck	Lulworth Formation	Cherty Freshwater Beds	Freshwater Bay Church Ope Cove Portland Bill Poxwell Quarry Lulworth Cove
		Marly Freshwater Beds
		Soft Cockle Beds
		Hard Cockle Beds
		Cypris Freestones
		Broken Beds and Caps
Helmsdale Shale			Helmsdale
Boulder Beds			Helmsdale
Portland Stone	Freestone Series		Dancing Ledge West Weare Freshwater Bay Church Ope Cove Portland Bill
	Cherty Series
	Basal Shell Bed
Portland Sand	Portland Clay		West Weare
	West Weare Sandstone
	Exogyra Bed
	Upper Blacknore Beds
	Blacknore Sandstone
	Lower Blacknore Beds

Kimmeridgian 150 to 154 MYA
Boulder Beds	Lothbeg Crakaig Helmsdale Portgower
Allt na Cuile Sandstone	Lothbeg
Kintradwell Beds	Lothbeg Crakaig Kintradwell
Three Kings Reef	Balintore
Eathie Shore	Eathie
Kimmeridge Clay	Reighton Wyke Regis Ringstead Kimmeridge Bay West Weare Chapmans Pool Bowleaze Cove

Oxfordian 154 to 159.4 MYA
Balintore Formation	Ardassie Limestone	Brora Balintore
Brora Arenaceous Formation	Brora Sandstone	Brora
Corallian		Balintore Osmington Mills Bowleaze Cove Weymouth
Corallian Oolite Formation	Passage Beds Member	Filey
	Hambleton Oolite Member	Filey
	Birdsall Calcareous Grit Member	Filey
	Hambleton Oolite Member	Filey
Peterborough Formation	Oxford Clay Member	Grafham Water Cayton Bay Osmington Mills Weymouth Yaxley Kings Dyke Pit Gristhorpe
Lower Calcareous Grit Formation	Saintoft Member	Filey
Lower Calcareous Grit Formation	Tenants Cliff Member	Cayton Bay

Brora Argillaceous Formation	Fascally Siltstone	Brora Brora River
	Brora Brick Clay	Brora Brora River
	Glauconitic Sandstone	Brora Brora River
	Brora Shale	Brora Brora River
	Brora Roof Bed	Brora Brora River

Peterborough Formation	Oxford Clay Member	Grafham Water Cayton Bay Osmington Mills Weymouth Yaxley Kings Dyke Pit Gristhorpe
Kellaways
Cayton Clay Formation		Cayton Bay
Fleet Member
Abbotsbury Cornbrash Formation		Gristhorpe Cayton Bay
Osgodby Formation	Hackness Rock Member	Gristhorpe
	Langdale Member	Gristhorpe
	Redcliff Rock Member	Gristhorpe Cayton Bay

Bathonian
165 to 170 MYA

Brora Coal Formation	Brora Coal	Brora Brora River Balintore
	Bituminous Shale	Brora Brora River
	Clays, Brecciated Sands and Cementstones
	White Sandstone

Early Cornbrash
Forest Marble			Burton Bradstock Watton Cliff
Frome Formation			Burton Bradstock Watton Cliff
Wattonensis Beds
Fullers Earth			Burton Bradstock West Bay
Zigzag Beds
Lealt Shale Formation		Lonmfearn Member	Elgol
		Dark grey fissile mudstone	Elgol
		Kildonnan Member	Elgol
		Gey fissile siltstone	Elgol
		Stromatolitic algal limestone	Elgol
Elgol Sandstone Formation			Elgol Kilmarie
Ravenscar Group	Scalby Formation	Long Nab Member	Scalby Ness

Bajocian
170 to 177 MYA

Late Inferior Oolite				Burton Bradstock West Bay Bearreraig Bay
Middle Inferior Oolite				Burton Bradstock West Bay
Ravenscar Group	Scalby Formation	Moor Grit Member		Gristhorpe Scalby Ness
	Scarborough Formation			Cloughton Wyke Gristhorpe Ravenscar
	Cloughton Formation	Gristhorpe Member		Cloughton Wyke Ravenscar
		Lebberston Member		Cloughton Wyke Ravenscar
		Yons Nab Beds		Gristhorpe
		Sycarham Member		Cloughton Wyke Ravenscar
Lincolnshire Limestone Formation		Wansford Stone		Old Sulehay
Salperton Limestone Formation		Clypeus Grit Member	Clypeus Grit	Cleeve Common Leckhampton Hill Gilberts Grave
			Upper Trigonia Grit
Ashton Limestone Formation		Rolling Back Member	Phillipsiana Beds	Cleeve Common
			Bourgetia Beds
			Witchellia Grit
		Notgrove Member	Notgrove Freestone	Cleeve Common Leckhampton Hill
		Gryphite Grit Member	Gryphite Grit	Cleeve Common Leckhampton Hill
			Buckmani Grit
		Lower Trigonia Grit Member	Lower Trigonia Grit	Cleeve Common Leckhampton Hill
Dogger Formation				Saltwick Bay Sandsend Whitby Ravenscar
Bearreraig Sandstone Formation		Garantiana Shale Member		Glasnakille Faoilean
		Dark grey fissile mudstone

Aalenian
177 to 180.1 MYA

Birdlip Limestone Formation	Harford Member	Snowhill Clay	Cleeve Common Robinswood Hill Leckhampton Hill
		Harford Member
	Scottsquar Member	Upper Freestone
		Oolite Marl
	Cleeve Cloud Member	Lower Freestone
	Crickley Member	Pea Grit
		Lower Limestone
	Leckhampton Limestone Member	Scissum Beds
Early Inferior Oolite			Burton Bradstock West Bay Horn Park Quarry
Scissum Beds			Burton Bradstock West Bay
Bridport Sands			Burton Bradstock West Bay Robinswood Hill
Bearreraig Sandstone Formation	Druim an Fhuarain Sandstone Member		Glasnakille Faoilean
Ravenscar Group	Eller Beck Formation		Hayburn Wyke Ravenscar
	Saltwick Formation		Saltwick Bay Whitby Hayburn Wyke Sandsend Ravenscar

Toarcian 180 - 190 MYA
L A T E L I A S	Early Bridport Sands		Thorncombe Beacon West Bay
	Down Cliff Clay		Eype Golden Cap (Seatown) Thorncombe Beacon
	Junction Bed		Eype Thorncombe Beacon
	Blea Wyke Formation	Yellow Sandstone Member	Ravenscar
	Blea Wyke Formation	Grey Sandstone Member	Ravenscar
	Whitby Mudsone Formation	Fox Cliff Sandstone Member	Ravenscar
		Peak Mudstone Member	Ravenscar
		Alum Shale Member	Kettleness Whitby Saltwick Bay Runswick Bay Sandsend Ravenscar
		Mulgrave Shale Member	Port Mulgrave Kettleness Whitby Saltwick Bay Runswick Bay Ravenscar
		Grey Shale Member	Port Mulgrave Kettleness Whitby Saltwick Bay Runswick Bay Ravenscar Robinswood Hill Leckhampton Hill

Pliensbachian 190 - 195 MYA
M I D D L E L I A S	Marlstone Rock		Robinswood Hill
	Thorncombe Sands		Eype Thorncombe Beacon
	Dyrham Formation		Robinswood Hill
	Margaritatus Beds
	Down Cliff Sands		Eype Thorncombe Beacon
	Eype Clay		Charmouth Eype Golden Cap (Seatown) Thorncombe Beacon
	Three Tiers		Charmouth Golden Cap (Seatown)
E A R L Y L I A S	Green Ammonite		Charmouth Golden Cap (Seatown)
	Belemnite Stone		Charmouth Golden Cap (Seatown)
	Belemnite Marls		Charmouth Lyme Regis
	Cleveland Ironstone Formation	Kettleness Member	Port Mulgrave Staithes Runswick Bay Kettleness Saltburn Skinningrove
		Penny Nab Member	Port Mulgrave Staithes Runswick Bay Saltburn Skinningrove
	Staithes Sandstone Formation		Staithes Ravenscar Robin Hoods Bay Saltburn
	Late Redcar Mudstone Formation	Ironstone Shales	Staithes Robin Hoods Bay Saltburn
		Pyritous	Robin Hoods Bay Saltburn

Sinemurian 195 - 201 MYA
E A R L Y L I A S	Middle Redcar Mudstone Formation	Siliceous Shales	Robin Hoods Bay Boggle Hole Saltburn
		Late Calcareous Shales	Robin Hoods Bay Saltburn
	Black Ven Marls		Charmouth Lyme Regis
	Shales with Beef		Charmouth Lyme Regis
	Late Blue Lias		Charmouth Lyme Regis Quantoxhead Kilve Chippel Bay

Hettangian 201 to 205.7 MYA
E A R L Y L I A S	Early Blue Lias		Watchet Lilstock Hinkley Point Quantoxhead Kilve Chippel Bay Doniford Bay St Audries Bay Blue Anchor Pinhay Bay Llantwit Major Gileston Sully
	Lavernock Shale Member		Lavernock Penarth
	Redcar Mudstone Formation	Early Calcareous Shales	Saltburn