| P number: | P519825 |
|---|---|
| Caption: | Sketch map of the Aberfoyle slate quarries. 1944, Perthshire, Scotland |
| Description: | Sketch map of the Aberfoyle Slate quarries, 1 3/4 miles north-west of Aberfoyle. The slate belongs to the Aberfoyle Slate, part of the Southern Highland Group of the Dalradian Supergroup (Precambrian). Blue, grey, green and purple slates were produced, and also a mottled green and purple type termed `tartan slate?. The seams of different colours ran parallel to the cleavage. Pyrites were practically absent. The slate surface was even, slightly rough and the texture was fine to medium. Striping due to bedding was frequently present. Many thin quartz veins were found generally coincident with cleavage. The slates were traversed by numerous joints, fairly widely spaced, following a variety of directions, none of which appeared to be dominant. The main workings are those to the north and were referred to as the Low Quarries. The following seams, arranged in order from north to south, were recognised in these workings. Seam (unnamed) 10 feet. Seam (unnamed) 18 feet. Silky Seam 12 feet. Seam (grey, green and blue slate) 16 feet. Home Seam 20 feet. Tartan Seam 6 feet. Grey Seam 10 feet. The eastern portion of the Low Quarries consisted of three large openings, the Smiddy Level, Home Quarry and Klondyke Quarry which were not very clearly defined from one another. Their lower portions were heavily blocked with debris. Farther west and at a higher level, was the Lockout Quarry, an irregular opening about 100 yards in diameter and 50 feet deep. The Burnside Quarry still farther west lay at about the same level and was of approximately the same dimensions. South of the Low Quarries, and at a considerably higher level, lay the so-called West Quarry, the face of which was about 200 yards long and 50 feet high. A seam about 30 feet thick had been worked and was quite distinct from any of those in the Low Quarries. |
| Date taken: | Wed Jan 01 00:00:00 GMT 2003 |
| Photographer: | Bain, T.S. |
| Copyright statement: | NERC |
| Orientation: | Landscape |
| Size: | 201.78 KB; 1000 x 689 pixels; 85 x 58 mm (print at 300 DPI); 265 x 182 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images |
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