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Geological formation in eastern England From Wikipedia, the free encyclopedia
The Roxby Formation, previously known as the Permian Upper Marls, is a formation from the Guadalupian-Early Triassic of eastern England (formation dies out at Nottinghamshire).[1] The formation is made up largely of mudstone and siltstone, reddish brown, with subordinate sandstone.[2]
Roxby Formation | |
---|---|
Stratigraphic range: | |
Type | Group |
Underlies | Sherwood Sandstone Group |
Overlies | Appleby Group |
Thickness | up to 1,025 metres (3,360 ft) |
Lithology | |
Primary | Mudstone and siltstone, reddish brown, with subordinate sandstone. |
Location | |
Region | England |
Country | UK |
Extent | east England |
Type section | |
Named for | Roxby, North Yorkshire |
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