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Uploaded on:
14/02/2009 02:53:40
Type:
Digital Asset
File Size:
312.12 KB
Dimensions:
1001 x 721 pixels
3351 views 4 downloads
P number: P002167
Old photograph number: C01832
Caption: On 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: On 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). Extensive development of scree slopes caused by freeze-thaw action of water within the cracks, joints and pores of the rock. 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: 01/01/1910
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: 312.12 KB; 1001 x 721 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, weathering/ Rock weathering, Geoscience subjects/ Landforms, glaciation/ Aretes, Geoscience subjects/ Landforms, weathering/ Frost action and debris  

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