| P number: | P527792 |
|---|---|
| Caption: | Limestone from Bent's Quarry, Macbiehill, Peeblesshire. |
| Description: | A medium-grained limestone containing a few what are though to be crinoids weathering to pale brown from Bent's Quarry, 700 yards south of Macbiehill, Peeblesshire. Macbiehill Quarry is in close proximity to the Bankhead Quarry. The limestone is Carboniferous in age. BGS Sample SL 23. British Geological Survey Petrology Collection sample number MC 7568. These two quarries are practically adjacent. The North Greens Limestone is worked on a face 12 feet high. The bed dips east at 5 degrees under a cover of 4 to 8 feet of drift at present (1945). The stone was burnt on the site. An analysis of limestone from the quarry indicates: calcium carbonate, 86.95 per cent; magnesium carbonate, 1.45 per cent; insoluble residue 8.72 per cent. The recorded thickness of the North Greens Limestone in neighbouring mineral bores is about 60 ft. The basal 12 to 20 feet are always of better quality than the higher part, and it is this lower portion that is quarried here. |
| Date taken: | Sun Jun 25 00:00:00 GMT 1905 |
| Photographer: | Unknown |
| Copyright statement: | Unknown |
| Orientation: | Landscape |
| Size: | 306.73 KB; 1000 x 665 pixels; 85 x 56 mm (print at 300 DPI); 265 x 176 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images |
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