DORSET BUILDING STONE
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Wealden Sandstones and Clays – Lower Cretaceous (lead authors JT &WGT)

System Stage Ma Group Formation Use
 
Lower Cretaceous Aptian ~125 Lower Greensand Ferruginous sandstone
Wealden
Vectis
Barremian ~129.4
 
  Course Quartz Grit
Hauterivian ~132.9 Wessex
Valanginian ~139.8
Berriasian
Purbeck Durlston

The Wealden Group is a multi-coloured sequence of sands, silts and clays deposited in lakes, rivers and deltas 146-125 million years ago, overlying the Purbeck Group. 
These strata outcrop in the area between Swanage (thickest) and Durdle Door, bounded to the north by the Chalk ridge and to the south by the Purbeck hills.  They are best exposed at Swanage, Worbarrow Bay and Lulworth Cove.  
Picture
Coarse Wealden sandstone Lulworth Cove. Photo: WGT
There are also occasional concretions within the clays, of similar colour, but smoother in texture.  Both these rock types have been used in field walls and the foundations of cottages in the vale.  Near Swanage, Wealden clay is used for brickmaking.  
Picture
A pebble of the ironstone from the clays at Worbarrow Bay, Loupe photo, 2 x 2 cm. Image : JT
Picture
Brick pit in Wealden clays near Swanage. Photo: WGT
Picture
Ferruginous Wealden sandstone Lulworth Cove. Photo: WGT
 Some coarse pebbly ”gritty” sandstones form ridges in the vale, such as Windmill Knap (near Swanage) and Corfe Common where the “Coarse Quartz Grit” was once quarried.  This is a hard ferruginous sandstone, of a purple to blood-red colour, containing minerals derived from erosion of the Dartmoor granite. (see image below)
Picture
Wealden sandstone in a building near Swanage. Photo: WGT
Picture
Wealden Bricks. Photo: WGT
Text JT & GT   Mar 2017
Picture

© DORSET BUILDING STONE
and contributors
  • Home
    • About Us
    • Glossary
    • References and Sources
    • Work in Progress
  • Building stones
    • How we study building stones
    • Palaeogene >
      • Heathstone
      • Sarsens
    • Cretaceous >
      • Chalk
      • Flint
      • Upper Greensand
      • Chert
      • Wealden
      • Purbeck >
        • Upper Purbeck (Purbeck Marble)
        • Upper Purbeck (Broken Shell Lst. aka Burr)
        • Middle Purbeck (Upper Building Stones)
        • Lower Purbeck (Cypris Freestones)
    • Jurassic >
      • Lower Purbeck >
        • Cypris Freestones
      • Portland Stone - Dorset
      • Chert
      • Kimmeridge Bay Dolomitic Limestone
      • Corallian
      • Cornbrash
      • Forest Marble
      • Fuller's Earth Rock
      • Inferior Oolite
      • Bridport Sands
      • Junction Bed
      • Blue Lias
    • Dorset Bricks
    • Non-Dorset Stone >
      • Tertiary >
        • Bembridge Limestones - Isle Of Wight
      • Cretaceous >
        • Beer Stone - SE Devon
      • Jurassic >
        • Bath Stone - Somerset & Wilts
        • Blue Lias of Somerset
        • Doulting Stone - Somerset
        • Ham Hill Stone - Somerset
        • Portland Limestone – Wilts (Chilmark)
        • Normandy >
          • Pierre de Caen (Caen Stone)
        • Pas de Calais
      • Triassic: White Lias of SE Devon
      • Carboniferous >
        • Carboniferous Limestones: Polished Black
      • Devonian
    • Building Stone Trails >
      • Devon Trails
      • Somerset Trails
    • Stone Index >
      • Stone Index A-B >
        • Abbotsbury Ironstone
        • Bath Stone
        • Beer Stone
        • Bembridge Stone
        • Binstead Stone
        • Blue Lias Stone
        • Bridport Sandstone
        • Broken Shell Limestone
        • Burr
        • Burton Limestone
      • Stone Index C-E >
        • Caen Stone
        • Carstone
        • Chert
        • Chilmark Lower Building Stone
        • Chilmark Main Building Stone
        • Chilmark Stone
        • Chilmark Upper Buiding Stone
        • Clavellata Beds
        • Cliff Stone
        • Clunch
        • Corallian
        • Cornbrash
        • Cypris Freestone
      • Stone Index F-O >
        • Featherbed Limestone
        • Featherstone
        • Forest Marble
        • Flint
        • Fuller's Earth Rock
        • Grey Chalk
        • Ham Hill Stone
        • Heathstone
        • Inferior Oolite
        • Ironstone
        • Lower Chalk
        • Lower Lias
        • Melbury Sandstone
        • Middle Chalk
        • Middle Lias
        • New Vein
        • Osmington Oolite
      • Stone Index P-T >
        • Portland Cherty Beds
        • Portland Cherty Series
        • Portland Stone
        • Purbeck Marble
        • Purbeck Stone
        • Quarr Stone
        • Rag
        • Sarsen Stone
        • Shaftesbury Sandstone
        • Sherborne Stone
        • Tisbury Stone
        • Todber Freestone
        • Trigonia Beds
      • Stone Index U-Z >
        • Upper Chalk
        • Wardour Lower Building Stone
        • Wardour Main Building Stone
        • Weald Clay
        • White Chalk
        • White Lias
        • Yeovil Stone
  • Churches
    • A-Z of Churches
    • East Dorset >
      • Almer
      • Bournemouth >
        • Talbot Village
      • Canford Magna Chapel
      • Corfe Mullen
      • Christchurch Priory
      • Cranborne
      • Edmondsham
      • Gussage All Saints
      • Gussage St. Andrew
      • Hampreston
      • Kinson
      • Knowlton
      • Morden
      • Pamphill
      • Poole St.James
      • Poole, the Spire Church
      • Shapwick
      • Sturminster Marshall
      • Tarrant Crawford
      • Tarrant Keyneston
      • West Parley
      • Wimborne St.Giles
      • Wimborne Minster Exterior Tour
      • Wimborne Minster Interior
      • Wimborne Minster: Purbeck Marble and Decorative Stone
    • Central Dorset >
      • Bloxworth
      • Bradford Peverell
      • Cerne Abbas
      • Hilton
      • Lytchett Matravers
      • Stratton
      • The Piddle Valley >
        • Affpuddle
        • Alton Pancras
        • Bere Regis
        • Piddlehinton
        • Piddletrenthide
        • Puddletown
        • Tolpuddle
      • Winterborne Tomson
    • North Dorset >
      • Batcombe
      • Belchalwell
      • Blandford Parish Church
      • Blandford St. Leonard's Chapel
      • Blandford St. Mary
      • Blandford Cemetery Chapels
      • Bradford Abbas
      • Chetnole
      • Child Okeford
      • Compton Abbas
      • Farnham
      • Folke
      • Gillingham
      • Hammoon
      • Hazelbury Bryan
      • Holnest
      • Ibberton
      • Iwerne Minster
      • Langton Long
      • Leigh
      • Mappowder
      • Margaret Marsh
      • Marnhull
      • Melbury Abbas
      • Melbury Bubb
      • Pimperne
      • Okeford Fitzpaine
      • Purse Caundle
      • Ryme Intrinseca
      • Shillingstone
      • Sixpenny Handley
      • Stockwood
      • Stourpaine
      • Tarrant Gunville
      • Tarrant Hinton
      • Tarrant Monkton
      • Tarrant Rushton
      • Todber
      • Winterborne Stickland
      • Winterborne Zelston
      • Woolland
      • Yetminster
    • South Dorset >
      • Abbotsbury
      • Bindon Abbey
      • Church Knowle
      • Coombe Keynes
      • East Holme
      • Kingston
      • Martinstown
      • Moreton
      • Portesham
      • Portland: Reforne
      • Steeple
      • Stinsford
      • Studland
      • Swanage
      • Upwey
      • Wareham St. Martin-on-the Walls
      • Wareham St.Mary >
        • St. Martin's-on-the-walls
      • Winterborne Came
      • Winterborne Steepleton
      • Wool
      • Worth Matravers
    • West Dorset >
      • Beaminster
      • Bothenhampton
      • Bradpole
      • Bridport
      • Broadwindsor
      • Burton Bradstock
      • Burstock
      • Catherston Leweston
      • Chelborough
      • Evershot
      • Eype
      • Loders
      • Monkton Wyld
      • Netherbury
      • North Poorton
      • Powerstock
      • St. Gabriel’s
      • Shipton Gorge
      • Lulworth Castle
      • Stoke Abbott
      • Symondsbury
      • Wootton Fitzpaine
      • Whitchurch Canonicorum
  • Quarries , Pits and Limekilns
    • Active Quarries
    • Abbotsbury area
    • Beacon Limestone Quarries
    • Inferior Oolite
    • North Dorset Corallian
    • Kimmeridge Bay
    • Portesham
    • Portland near Swanage
    • Purbeck near Swanage
    • Shaftesbury Sandstone
    • Uplyme Quarries
    • Upwey
    • Whiteway Hill Quarry
    • Winspit Quarry
    • Non-Dorset Quarries and Pits
  • Secular buildings
    • Athelhampton House
    • Blandford Town Hall
    • Cerne Abbas (village and Abbey)
    • Durweston Bridge
    • Ibberton Village
    • Kimmeridge Bay
    • Moignes Court
    • Non-Dorset Buildings
  • Search
  • Contact Us