Uploaded on:
17/03/2009 00:52:46
Type:
Digital Asset
File Size:
295.69 KB
Dimensions:
1000 x 665 pixels
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P number: P527775
Caption: Nullipore or coralline sand from Dunvegan, Skye, Invernessshire.
Description: Nullipore or coralline sand probably from the shore at Claigan, about four miles north of Dunvegan Castle. Coralline or nullipore sand is found in three small bays near Claigan. It consists of broken fragments of the calcareous algae Lithothamnion calcarreum. It forms dazzling white beaches. British Geological Survey Petrology Collection sample number MC 7551. The sand is coarsely granular and the fragments composing it have a marked coral-like appearance. The quantity varies somewhat from year to year depending on the incidence of storms. Camas Ban, the most southerly of the three bays, is accessible by road. An estimated minimum of 2,500 tons is available at low tide, possibly less than 1,000 tons at high tide. The other two beaches are inaccessible by road; the minimum quantity available at low tide from the two beaches would probably amount to about 5,000 tons. The sand has been used locally for agricultural purposes. Analysis showed this sand (S.L. 6) to contain 84.32 per cent calcium carbonate and 10.35 per cent magnesium carbonate.
Date taken: 25/06/1905
Photographer: Unknown
Copyright statement: Unknown
Orientation: Landscape
Size: 295.69 KB; 1000 x 665 pixels; 85 x 56 mm (print at 300 DPI); 265 x 176 mm (screen at 96 DPI);
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