| P number: | P527875 |
|---|---|
| Caption: | Dolomite from Tornapress Bridge, Loch Kishorn, Ross and Cromarty. |
| Description: | A pale, flesh-grey, compact dolomite with flinty fracture. It is traversed by thin cracks filled with white dolomite. It is from the Durness Limestone Group II, Eilean Dubh and is of Cambro-Ordovician in age. It outcrops at the roadside, 680 yards south of Tornapress Bridge, Loch Kishorn, Ross and Cromarty. BGS Sample SL 255. British Geological Survey Petrology Collection sample number MC 7651. This lavender to reddish in colour dolomite forms a cliff 20 feet high with the beds dipping to the east. It is a compact dolomite with flinty fracture and contains small grains of quartz. A spring issues from the limestone depositing calcareous tufa. An analysis of the limestone gives calcium carbonate 47.76 per cent, magnesium carbonate 40.32 per cent and insoluble residue10.45 per cent. Limestone belonging to Groups I and II crops out from beneath the Kishorn Thrust on the left bank of the River Kishorn from Seafield to 1 mile north of Tomapress. For about a mile in this area the limestone rises steeply from the road. |
| Date taken: | Sun Jun 25 00:00:00 GMT 1905 |
| Photographer: | Unknown |
| Copyright statement: | Unknown |
| Orientation: | Landscape |
| Size: | 182.54 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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