| P number: | P531445 |
|---|---|
| Caption: | Photomicrograph of Charlestown Main Limestone. Light: XPL. Magnification: x2.5. Chapel Limestone Quarry, about 2 miles north-west of Kirkcaldy, Fifeshire, Scotland. |
| Description: | Dark grey limestone with grey spots, passing to yellowish-grey overall with black streaks and a pale green mineral filling spaces lined with black material. This specimen is Carboniferous Limestone Series in age. BGS sample number SL 214. British Geological Survey Petrology Collection sample number S 35904. Photomicrograph details: Light: XPL, Magnification: x2.5. The rock is well crystallized to irregular granular calcite of varying size and uniformly permeated by brown dust or stain. It contains crinoid ossicles and outlines of shells in both cases recrystallized, though the former may still be of one piece and retain internal structure. Garnet (grossular) is distributed throughout the whole rock. Only a small quantity of fine-grained, almost opaque, aggregate is present in the section. The thin section shows a thermally altered limestone. The carbonate has been completely recrystallized to coarse grains, and tiny garnets (small dark dots and aggregates) have been produced by the action of heat. The outlines of fossils are partially preserved. |
| Date taken: | Sun Jun 25 00:00:00 GMT 1905 |
| Photographer: | Unknown |
| Copyright statement: | Unknown |
| Orientation: | Landscape |
| Size: | 393.99 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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