| P number: | P000829 |
|---|---|
| Old photograph number: | D02390 |
| Caption: | Oblique aerial view of Canisp showing the Lewisian-Torridonian-Cambrian unconformities. |
| Description: | The mountain is capped by a transgressive bed of Cambrian Basal Quartzite which dips from the summit to the right-hand side of the picture. The foreground is composed of Lewisian gneiss and its junction with the Torridonian follows the break of slope along the length of Canisp. The porphyry sills are igneous rocks intruded into the host rock parallel to the bedding. Porphyry is a texture term to denote igneous rocks with relatively large, often well-formed crystals occurring in a fine-grained groundmass. Canisp is a relict mountain of reddish-brown Torridonian sandstone which has been intruded by sills of porphyry, seen forming some of the crags. View looking north. |
| Date taken: | Wed Jan 01 00:00:00 GMT 1975 |
| Photographer: | Christie, A. |
| Copyright statement: | NERC |
| Acknowledgment: | This image was digitized with grant-in-aid from SCRAN the Scottish Cultural Resources Access Network |
| X longitude/easting: | 220500 |
| Y latitude/northing: | 918500 |
| Coordinate reference system, ESPG code: | 27700 (OSGB 1936 / British National Grid) |
| Orientation: | Portrait |
| Size: | 378.99 KB; 996 x 1000 pixels; 84 x 85 mm (print at 300 DPI); 264 x 265 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images |
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