

Geological succession in Herefordshire
The table below shows a generalised stratigraphy for Herefordshire. Heavy black lines represent uncomformable relationships between underlying and overlying rocks.
Quaternary
|
Holocene
|
Head Deposits
|
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---|---|---|---|---|---|
Suballuvial Deposits
|
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Devensian
|
Herefordshire Formation
|
Cradley Valley Formation
|
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Ham Green Member
|
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First Terrace
|
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Ipswichian
|
Second Terrace
|
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Wolstonian
|
Third Terrace
|
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Fourth Terrace
|
Colwall Member
|
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Hoxian
|
Cradley Silt Member
|
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Anglican
|
Starpit Formation
|
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Humber Formation
|
Mathon Formation
|
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Permian
|
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Warwickshire Group
|
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Carboniferous
|
Westphalian
|
Salop Formation
|
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Halesowen Formation
|
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Etruria Formation
|
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Coal Measures Group
|
Upper Coal Measures
|
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Middle Coal Measures
|
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Lower Coal Measures
|
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Cornbrook Sandstone Formation
|
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Carboniferous Limestone Supergroup
|
Pembroke Limestone Group
|
Cromhall Sandstone Formation
|
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Llanelly Formation
|
|||||
Devonian
|
Upper Old Red Sandstone
|
Tintern Sandstone Formation
|
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Quartz Conglomerate Formation
|
|||||
Devonian Limestone Group
|
Middlewood Sandstone Member
|
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Lower Old Red Sandstone
|
Woodbank Series
|
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Breconian
|
Brownstones Formation
|
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Sandy Haven Formation
|
Townsend Tuffs Beds
|
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Silurian
|
Pridoli
|
Downton Group
|
Raglan Mudstone
|
Rushall Formation
|
|
Ledbury Formation
|
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Temeside Mudstone formation
|
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Downton Castle Sandstone
|
Ludlow Bone Bed
|
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Ludlow
|
Cefn Einion Formation
|
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Knucklas Formation
|
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Bailey Hill Formation
|
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Bringewood Formation
|
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Wenlock
|
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Coalbrookdale Formation
|
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Llandovery
|
Haugh Wood Formation
|
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Petalocrinus Limestone
|
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Pentamerus Beds
|
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Ordovician
|
Tremadoc
|
Habberley Shale Formation
|
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Shineton Shale Formation
|
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Bronsil Shale Formation
|
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Cambrian
|
Merioneth
|
White-Leaved Oak Shale Formation
|
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Comley
|
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Precambrian
|
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Reproduced with the permission of the British Geological Survey © NERC.
All Rights Reserved. Based upon information in the BGS
Lexicon and the BGS memoir ‘Geology of the country between Hereford and Leominster,
1:50,000 scale sheet 198‘, with the permission of the British Geological Survey.
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