Mercia Mudstone Group
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The Mercia Mudstone Group is a middle to late Triassic lithostratigraphic group which is widespread in Britain, especially in the English Midlands—the name is derived from the ancient kingdom of Merci
Sidmouth Mudstone formation at Gunthorpe
Sherwood Sandstone Group
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The Sherwood Sandstone Group is a Triassic lithostratigraphic group which is widespread in Britain, especially in the English Midlands. The name is derived from Sherwood Forest in Nottinghamshire whic
Mercia Mudstone Group
…Group Stratigraphic range: Anisian-Rhaetian Type Group Unit of New Red Sandstone Supergroup Sub-units Stratigraphy Underlies Penarth Group Overlies Sherwood Sandstone Group Thickness over 1,350 m (4,430 ft) Lithology Primary Mudstone Other Siltstone, sandstone, halite, anhydrite Location Coordinates Region Scotland, England…
St Bees Sandstone, St Bees South Head, Cumbria