Gloucestershire Solid Geology Interactive Stratigraphic Table
This is an interactive stratigraphic table of the solid geology found in Gloucestershire, designed to help you find out more about specific geological formations in the county.
Clicking on and of the names in the FORMATION column, will take you to a page that describes that formation, its lithology, its upper and lower boundaries and examples of sites where it is found.
[DISCLAIMER - Listing of sites on any of these pages does not imply any right of access to them. It is the individuals responsibility to ensure that they have right of access to any site at any time, and Gloucestershire Geology Trust take no responsibility for any tresspass.]
PERIOD |
GROUP |
FORMATION |
MEMBER
(or local names) |
Jurassic |
Ancholme |
Oxford Clay |
Peterborough |
Kellaways |
Kellaways Sand |
Kellaways Clay |
Great Oolite |
Cornbrash |
|
Forest Marble |
|
White Limestone |
Signet |
Ardley |
Shipton |
Hampen |
|
Taynton Limestone |
|
Througham Tilestone |
|
Fuller's Earth |
Eyford |
Dodington Ash Rock |
Minchinhampton Beds |
Fullers Earth Clay |
Chipping Norton Limestone |
|
Inferior Oolite |
Salperton Limestone |
Clypeus Grit |
Upper Trigonia Grit |
Aston Limestone |
Rolling Bank |
Notgrove |
Gryphite Grit |
Lwr Trigonia Grit |
Birdlip Limestone |
Harford |
Scottsquar |
Cleeve Cloud |
Crickley |
Leckhampton |
Lias |
Bridport Sand |
|
Whitby Mudstone |
Marlstone Rock |
Dyrham |
Charmouth Mudstone |
Blue Lias |
Triassic |
Penarth |
Lilstock |
|
Cotham |
Westbury |
|
Mercia Mudstone |
Blue Anchor |
Branscombe Mudstone |
Arden Sandstone |
Sidmouth Mudstone |
Sherwood Sandstone |
Bromsgrove Sandstone |
Permian |
|
Bridgnorth Sandstone |
|
|
Haffield Breccia |
|
|
Carboniferous |
Warwickshire |
Grovesend |
|
Pennant Sandstone |
|
Trenchard |
|
Carboniferous Limestone |
Cromhall Sandstone |
(Upper Drybrook Sandstone) |
(Drybrook Limestone) |
(Lower Drybrook Sandstone) |
Llanelly |
(Whitehead Limestone) |
Gully Oolite |
(Crease Limestone) |
Barry Harbour Limestone |
(Lower Dolomite) |
Avon Group |
(Lower Limestone Shale) |
Devonian |
Upper Old Red Sandstone |
Tintern Sandstone |
|
Quartz Conglomerate |
Lower Old Red Sandstone |
Brownstones |
|
St Maughan's |
Raglan Mudstone |
Bishops Frome Limestone |
Silurian |
|
Downton Castle Sandstone |
Clifford's Mesne Beds |
Upper Ludlow Shales |
Ludlow Bone Bed |
|
Whitcliffe |
Lientwardine |
|
|
Aymestry Limestone |
Lower Ludlow Shales |
Bringewood |
Elton |
|
Much Wenlock Limestone |
Coalbrookdale |
Woolhope Limestone |
May Hill Sandstone / Damery & Tortworth Beds |
Yartelton / Tortworth Beds |
Upper Trap |
Huntley Hill / Damery Beds |
Huntley Quarry Beds / Lower Trap |
Ordovician |
|
Micklewood Beds |
|
Breadstone Shale |
Bronsil Shale |
Cambrian |
|
White-leaved Oak Shale |
|
Hollybush Sandstone |
Malvern Quartzite |
Precambrian |
|
Malverns Complex |
|
|