| P number: | P001849 |
|---|---|
| Old photograph number: | C00003 |
| Caption: | Arkle, from the north-east, Sutherland. Characteristic weathering of thrust quartzites forming screes. Moraines fill the floor of the corries. Beyond loch, glaciated surface of Lewisian gneiss. (See photo B00031 full-plate.) |
| Description: | Arkle, from the north-east, Sutherland. Characteristic weathering of thrust quartzites forming screes. Moraines fill the floor of the corries. Beyond loch, glaciated surface of Lewisian gneiss. (See photo B00031 full-plate.) The quartzites forming the upper part of the mountain are cut by many small thrust planes, forming the imbricate zone. This thrusting has left them more vulnerable than the intact quartzites beneath to weathering, leading to the formation of extensive screes. Glacial erosion has produced a classic corrie with an arcuate, frost-shattered ridge and an ice-scoured floor. Exposures of Lewisian gneiss underlying the basal, undisturbed quartzite, in low ground beyond lochan (far right). |
| Date taken: | Thu Jan 01 00:00:00 GMT 1891 |
| Photographer: | Lunn, R. |
| Copyright statement: | Crown |
| Acknowledgment: | This image was digitized with grant-in-aid from SCRAN the Scottish Cultural Resources Access Network |
| X longitude/easting: | 230000 |
| Y latitude/northing: | 949000 |
| Coordinate reference system, ESPG code: | 27700 (OSGB 1936 / British National Grid) |
| Orientation: | Landscape |
| Size: | 193.29 KB; 1000 x 722 pixels; 85 x 61 mm (print at 300 DPI); 265 x 191 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images, Geoscience subjects/ Landforms, glaciation/ Glaciated surfaces |
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