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Local Name(s): | Swaledale Fossil Stone. | ||||||
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Stone Group: | Sedimentary | ||||||
Stone Type: | Limestone | ||||||
Geology: |
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Geological Sub-Divisons: | Occurs near the top of the Carboniferous Limestone. Askrigg Block, Wensleydale Group, Underset Limestone Formation. |
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General Colour Description: | Colour varies from light/ pale brown, buff/grey, to blue and beige. Fossils are visible in polished examples. |
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Hand Specimen Description: | A crinoidal limestone with large fossils. It is a very hard, crystalline, coarse grained and poorly sorted rock that easily takes a polish. |
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General Comments: | Its use was contemporary with that of Purbeck marble in the south of England (North 1930: 143). |
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Stone Identifiers: | Crinoidal,  Fossiliferous. | ||||||
Reacts dilute to HCl? | Yes |