| P number: | P527945 |
|---|---|
| Caption: | Photomicrograph of Gilmerton (No. 1) Limestone. Light: XPL. Magnification: x2.5. Common Hill Quarry, 670 yards south-west of Middleton, Midlothian, Scotland. |
| Description: | A grey and brownish, compact, fine-grained limestone with calcite-filled fractures. This specimen is Carboniferous Limestone Series in age. BGS sample number SL 46. British Geological Survey Petrology Collection sample number S 34535. Photomicrograph details: Light: XPL, Magnification: x2.5. The thin section contains tiny calcareous fossils including foraminifera, spines, fragments of thin shells and pellets, accessory grains of quartz and granules of pyrite in a fine-grained turbid matrix of calcite, 0.01 mm grain size, recrystallized extensively to clear calcite of grain size 0.02 to 0.04 mm. In this base larger fragments of crinoid and shell and large spines are numerous. In summary the rock is a microfossiliferous limestone. |
| Date taken: | Sun Jun 25 00:00:00 GMT 1905 |
| Photographer: | Unknown |
| Copyright statement: | Unknown |
| Orientation: | Landscape |
| Size: | 393.71 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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