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Uploaded on:
17/03/2009 19:59:27
Type:
Digital Asset
File Size:
126.41 KB
Dimensions:
1000 x 775 pixels
574 views 0 downloads
P number: P519657
Caption: Specimen of slate from top of cliff where slate has been quarried, Collie Head, Troup Head, Gardenstown, Aberdeenshire, Scotland
Description: Dark blue-grey coloured slate with reflective cleavage stained by secondary iron oxides. The specimen is of Precambrian, Dalradian age. British Geological Survey Petrology Collection sample number EMC 4154. For hundreds of years slate was the preferred roofing material in Scotland. The geological variation found in slate quarries from across Scotland meant that each produced a characteristic slate, with a colour, texture and thickness varying from region to region. Slates can be produced in a vast range of shapes and sizes. At its peak in the late 1800s the slate industry in Scotland produced some 45,000 tons annually. There has been no slate production in Scotland for nearly 50 years. Specimen size: 12x9cm.
Date taken: 01/01/2003
Photographer: Bain, T.S.
Copyright statement: NERC
Orientation: Landscape
Size: 126.41 KB; 1000 x 775 pixels; 85 x 66 mm (print at 300 DPI); 265 x 205 mm (screen at 96 DPI);
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