| P number: | P519824 |
|---|---|
| Caption: | Sketch map of the Luss slate quarries. 1944, Argyllshire, Scotland |
| Description: | Sketch map of the Luss slate quarries. The Aberfoyle Slates occur in a belt about a mile wide on the west side of Loch Lomond at Luss. The belt includes several bands of grit, and is also complicated by faults, which run in a northerly direction and generally have the effect of shifting beds on the west side southwards relatively to those on the east side. The specimen is of Precambrian, Dalradian age. The slates were for long worked in a line of quarries locally known as The Trough which runs in a west-south-west direction up the hillside north of Craignahullie. There appear to have been 5 or 6 benches, each 50 to 80 feet high and from 30 to 40 yards wide. Both grey-blue and greenish slates occur with cleavage dipping south 30 degree east at 60 degrees to 70 degrees. About 50 yards south of The Trough, nearer the main road, there is an old opening called the Level Quarry, was reported to be largely choked with debris in 1944. Another opening, Creag na Bodach Quarry, about the same distance from the top of The Trough was in much the same condition. At the Purple Quarry further south and lying about 450 yards west-north-west of Craignahullie the face was up to 30 feet high and showed about 40 feet of good purplish slate, the cleavage of which dips 30 degrees E. of S. at 70 degrees. Immediately west of Luss, near the north margin of the slate belt, there were other old worked-out quarries. Some 550 yards west of the hotel at Luss the slate belt is crossed by the north-south fault which occurs west of The Trough. West of this fault there is a good outcrop of slate-rock which has been opened up in the Auchengaven Quarry, this was the only working quarry reported in 1944. It produced blue and grey varieties, with some green to the south; banding was fairly common. Surfaces of the slate were even though somewhat rough; texture was fine to medium. Pyrites were very rare. Wastage was about 88 per cent of quarried stone. |
| Date taken: | Wed Jan 01 00:00:00 GMT 2003 |
| Photographer: | Bain, T.S. |
| Copyright statement: | NERC |
| Orientation: | Landscape |
| Size: | 255.24 KB; 1000 x 915 pixels; 85 x 77 mm (print at 300 DPI); 265 x 242 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images |
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