| P number: | P527879 |
|---|---|
| Caption: | Ballachulish Limestone from a quarry at Tom an Aoil, Spean Bridge, Invernessshire. |
| Description: | A grey, crystalline limestone belonging to the Dalradian Supergroup (Precambrian) and from a quarry 300 yards north-north-west of Tom an Aoil, and one and three-quarters of a mile east-north-east of Spean Bridge, Invernessshire. British Geological Survey Petrology Collection sample number MC 7655. The limestone is composed of a mosaic of equidimensional grains of closely twinned calcite, 0.4-1-0 mm. across, between which small idioblastic quartz grains, about 0.1 mm across, are scattered. The bedding of the limestone is vertical and strikes north-north-east to north-east. The thickness of the band of high-quality limestone was at least 25 to 30 feet in the quarry, which was nowhere more than 15 feet deep. |
| Date taken: | Sun Jun 25 00:00:00 GMT 1905 |
| Photographer: | Unknown |
| Copyright statement: | Unknown |
| Orientation: | Landscape |
| Size: | 304.15 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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