| P number: | P002168 |
|---|---|
| Old photograph number: | C01833 |
| Caption: | Stob Choire Claurigh ('The White Corries'), 8.0 km. east-north-east of Ben Nevis, Inverness-shire. Frost-riven arete of Glencoe Quartzite (Dalradian Supergroup). |
| Description: | Stob Choire Claurigh ('The White Corries'), 8.0 km. east-north-east of Ben Nevis, Inverness-shire. Frost-riven arete of Glencoe Quartzite (Dalradian Supergroup). Angular boulder-strewn frost-shattered surface. Note how loose and shattered the small cliff appears, this is caused by the action of frost, repeatedly freeze-thawing water in the rocks, wedging, loosening and fragmenting them apart. When water fills the cracks of crevices and pores in a rock and then freezes. it expands by more than 9 per cent of its volume. This represents a bursting pressure of 150 kg. per square centimetre. The rocks are wedged apart and fragment and when a thaw sets in, become loose. This process has been going on for the thousands of years since the last glaciation with the result that mountainsides are covered in loose blocks. On the steeper slopes these fall to form talus or scree slopes. |
| Date taken: | Sat Jan 01 00:00:00 GMT 1910 |
| Photographer: | Lunn, R. |
| Copyright statement: | Crown |
| Acknowledgment: | This image was digitized with grant-in-aid from SCRAN the Scottish Cultural Resources Access Network |
| Orientation: | Landscape |
| Size: | 323.71 KB; 1000 x 717 pixels; 85 x 61 mm (print at 300 DPI); 265 x 190 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images, Geoscience subjects/ Landforms, weathering/ Rock weathering, Geoscience subjects/ Landforms, glaciation/ Aretes, Geoscience subjects/ Landforms, weathering/ Frost action and debris |
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