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Showing results for tags 'frosterley marble'.
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Does anyone recognise this? I noticed it when scanning photos of a recently cut and polished piece of Frosterley "Marble" from Weardale, Co. Durham, UK. (upper Mississippian, Pendleian). It shows in section as a rod about 5mm long, with perforations, central ridge and a fine reticulate pattern. My first thought was a Fenestella fragment but it doesn't look regular enough and I can find no mention of the reticulate structure. Also, I've never seen bryozoans in this part of the limestone though they occur at other levels. Now I'm wondering about a dasycladacean alga - some look vaguely similar but all the Carboniferous ones I can find references to look simpler and fuzzier. Scale bar is 1cm, divisions are 1mm Contrast enhanced In context, showing ghostly appearance amongst the corals
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- alga?
- fenestellid?
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Characteristic of the Upper Visean and Lower Namurian of Europe and Africa. Easily identified by its compact, cuspidate axial column made of small tabellae. One of the less common solitary corals in the Great Limestone, this one is in a dark matrix locally known as "Frosterley Marble".
- 4 comments
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- alston formation
- aulophyllum
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