Environmental Engineering Reference
In-Depth Information
Thickness of
intervening strata
(m)
Aquifer
Shale gas source
Area where both present
Crag
Kellaways/Oxford/Osgodby Clays
East Anglia
370-460
Crag
Upper Lias
Norfolk
350-530
Chalk
Kimmeridge/Ampthill Clays
North & South Downs, Hampshire,
Wiltshire, Dorset
50-1200
Chalk
Kellaways/Oxford/Osgodby Clays
Lincolnshire, Norfolk, North & South
Downs, Hampshire, Wiltshire, Dorset
11-1500
Chalk
Upper Lias
Yorkshire, Lincolnshire, Norfolk, North &
South Downs, Hampshire, Wiltshire,
Dorset
30-1900
Lower Greensand
Kimmeridge/Ampthill Clays
North & South Downs, Hampshire,
Wiltshire, Dorset
200-1400
Lower Greensand
Kellaways/Oxford/Osgodby Clays
Lincolnshire, Norfolk, Cambridge,
Bedford, Bucks, Berks North & South
Downs, Hampshire, Wiltshire, Dorset
37-1800
Lower Cretaceous sandstones-Spilsby Kellaways/Oxford/Osgodby Clays
Lincolnshire
250-500
Lower Cretaceous sandstones-Spilsby Upper Lias
Lincolnshire
300-600
Corallian
Kellaways/Oxford/Osgodby Clays Wessex-Weald, Wiltshire
300-1100
Corallian
Upper Lias
Yorkshire, Wessex-Weald, Wiltshire
100-1600
Jurassic Oolitic limestones
Upper Lias
Lincolnshire, Norfolk, Cambridge,
Bedford, Bucks, Berks North & South
Downs, Hampshire, Wiltshire, Dorset
190-1700
Triassic sandstones
Bowland-Hodder
West Cumbria, Lancashire, Cheshire,
Derbyshire, East Midlands, Lincolnshire,
Yorkshire
0-5000 Thinnest
in South Mid-
lands and thick-
est in Cheshire
Basin
Permo-Triassic sandstones
Upper Cambrian shales
Warwickshire
0-1300
Permian sandstones
Bowland-Hodder
West Lancashire and Cheshire Basin
0-5000
Permian (Magnesian) limestone
Bowland-Hodder
Yorkshire, Lincolnshire
80-1800
None
Marros
NA
NA
None
Cambrian Shales
NA
NA
