| P number: | P000426 |
|---|---|
| Old photograph number: | C01538 |
| Caption: | The Clett, Holborn Head. Caithness. Clett, or rectangular flat-topped stack of horizontally-bedded flagstones. Both the main cliff and the stack are capped with a thin layer of boulder clay. |
| Description: | The Clett, Holborn Head. Caithness. Clett, or rectangular flat-topped stack of horizontally-bedded flagstones. Both the main cliff and the stack are capped with a thin layer of boulder clay. The stack is formed by wave erosion concentrated along parallel joints, initially forming deep inlets, then as erosion starts in cross joints between the inlets, caves develop either side, eventually an arch is formed. With the collapse of the arch the stack remains separated from the main cliffline. |
| Date taken: | Sat Jan 01 00:00:00 GMT 1910 |
| Photographer: | Lunn, R. |
| Copyright statement: | Crown |
| Acknowledgment: | This image was digitized with grant-in-aid from SCRAN the Scottish Cultural Resources Access Network |
| X longitude/easting: | 310500 |
| Y latitude/northing: | 971500 |
| Coordinate reference system, ESPG code: | 27700 (OSGB 1936 / British National Grid) |
| Orientation: | Landscape |
| Size: | 234.18 KB; 1000 x 733 pixels; 85 x 62 mm (print at 300 DPI); 265 x 194 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Best of BGS Images/ Images from the archives, Geoscience subjects/ Landforms, marine/ Stacks |
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