| P number: | P001720 |
|---|---|
| Old photograph number: | B00245 |
| Caption: | Dippin Head, south-east coast of Arran, Buteshire. Weathering of Dippin Head columnar dolerite sill, giving rise to detached pinnacles and screes. |
| Description: | Dippin Head, south-east coast of Arran, Buteshire. Weathering of Dippin Head columnar dolerite sill, giving rise to detached pinnacles and screes. Relatively slow cooling of the basaltic magma intruded into the Triassic sandstone produced a regular joint pattern, similar to that found in the centres of thick lava flows (Fingal's Cave, Giant's Causeway). The vertical joints are much more persistent than the later horizontal ones. Hence the rock breaks up into narrow columns, producing pinnacles. The fallen boulders are very large, producing rough, immobile scree. To the left of the cliffs the low ground is underlain by Triassic dune-bedded desert sandstones. |
| Date taken: | Fri Jan 01 00:00:00 GMT 1897 |
| 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: | 205100 |
| Y latitude/northing: | 622200 |
| Coordinate reference system, ESPG code: | 27700 (OSGB 1936 / British National Grid) |
| Orientation: | Portrait |
| Size: | 167.81 KB; 759 x 1001 pixels; 64 x 85 mm (print at 300 DPI); 201 x 265 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images, Geoscience subjects/ Landforms, weathering/ Rock weathering |
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