| P number: | P804146 |
|---|---|
| Caption: | Grey Lake Quarry, Camelford. North Cornwall, April 12th 1914. |
| Description: | This rock is a grey porphyritic quartz felsite being coarse grained in the centre with large phenocrysts of pink and yellowish orthoclase feldspar crystals but at its contact with the granite or sediment it is a very fine grained crypto crystalline rock which shows flow lines and spherulites. |
| Copyright statement: | NERC |
| Additional information: | From the Geologists' Association Carreck Archive. The Reader Geological Photographs. Long excursions 1914. Part 1. |
| Orientation: | Landscape |
| Size: | 281.81 KB; 999 x 786 pixels; 85 x 67 mm (print at 300 DPI); 264 x 208 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Special collections/ Geologists' Association 'Carreck Archive'/ T W Reader geological photographs, long excursions 1914. Part 1 |
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