BGS mineralogy and petrology collection record

Sample number MR21417
Sample Donor Not entered
Rock name Mudstone, Calcareous. 'Original entry: Calcareous Mudstone Or Muddy Limestone - Laminated With Polygonal Structure Due'
Stratigraphy Rhaetian. Cotham Member.
Comments Calcareous mudstone or muddy limestone - laminated with polygonal structure due to dessicatioin, successive layers show different structures demonstrating effects of alternating sedimentatrion and drying out of mud layers,Cotham Beds,Upper Rhaetic,bu
Locality details Harry Stoke Drift Mine,excavation for drift mine at Harry Stoke, near Bristol,
50k map sheet Bristol (264)

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Map reference ST 619 786
Year collected 1957 
Bore name Not applicable
Confidentiality No restrictions