| P number: | P527836 |
|---|---|
| Caption: | Limestone from Robbery Head, Lybster, Caithness. |
| Description: | Dark fine-grained dolomitic limestone, thinly laminated in shades of grey. Robbery Head, south of Lybster, Caithness. BGS Sample SL 167. British Geological Survey Petrology Collection sample number MC 7612. There are several different kinds of calcareous beds in Caithness but only one of these, namely the shell sand of the John o? Groat?s area, is of substantial economic interest. Of the other sorts, there are two different types of limestone in the Middle Old Red Sandstone, freshwater lake marl is found in several areas, and one or two springs deposit calcareous tufa. The calcareous beds associated with the flagstones of the Middle Old Red Sandstone have been examined in several places, that at Robbery Head, two miles south-west of Lybster, showed 52.41 per cent calcium carbonate, and 12-15 per cent magnesium carbonate. |
| Date taken: | Sun Jun 25 00:00:00 GMT 1905 |
| Photographer: | Unknown |
| Copyright statement: | Unknown |
| Orientation: | Landscape |
| Size: | 271.18 KB; 1000 x 665 pixels; 85 x 56 mm (print at 300 DPI); 265 x 176 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images |
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