| P number: | P527952 |
|---|---|
| Caption: | Photomicrograph of Hawthorn Limestone. Light: PPL. Magnification: x2.5. Quarry at Glenmuir Limeworks, 6 miles north-east of High Glenmuir, 4 miles east of Cumnock, Ayrshire, Scotland. |
| Description: | Reddish-grey compact limestone. This specimen is Carboniferous Limestone Series in age. BGS sample number SL 93. British Geological Survey Petrology Collection sample number S 34559. Photomicrograph details: Light: PPL, Magnification: x2.5. The rock is composed of small debris of shells, crinoid columnals, spines, foraminifera and polyzoan fragments set in a matrix of very fine-grained calcite which is considerably recrystallized to larger grains of 0.02-0.03 mm. In this matrix small angular grains of quartz, shreds of white and bleached micas and traces of kaolinite are accessory. Small groups, 0.2 mm across, of small crystals of siderite with oxidized borders are scattered throughout the rock. In summary, a muddy or silty limestone, fine-grained and sideritic, containing microfossils. |
| Date taken: | Sun Jun 25 00:00:00 GMT 1905 |
| Photographer: | Unknown |
| Copyright statement: | Unknown |
| Orientation: | Landscape |
| Size: | 385.96 KB; 1000 x 663 pixels; 85 x 56 mm (print at 300 DPI); 265 x 175 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images |
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