| P number: | P804364 |
|---|---|
| Caption: | ???????. Derbyshire, August 3rd 1914. |
| Description: | In the process of cooling and contraction this rock frequently assumes a columnar structure and often divided by cross joints. In this case instead of being angular each segment owing to weathering takes a spheroidal form. It is stated that the cause of this is owing to the middle of each spheroid being a centre of crystallisation around which the different minerals of the rock arranged themselves. |
| Copyright statement: | NERC |
| Additional information: | From the Geologists' Association Carreck Archive. The Reader Geological Photographs. Long excursions 1914. Part 2. |
| Orientation: | Portrait |
| Size: | 274.28 KB; 755 x 1000 pixels; 64 x 85 mm (print at 300 DPI); 200 x 265 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 2 |
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