| P number: | P001723 |
|---|---|
| Old photograph number: | B00261 |
| Caption: | Shore, west of Kildonan Castle, south-east coast of Arran, Buteshire. Palaeocene dolerite dyke intrusive into Triassic sandstone, the sandstone being hardened near the edge of dyke. |
| Description: | Shore, west of Kildonan Castle, south-east coast of Arran, Buteshire. Palaeocene dolerite dyke intrusive into Triassic sandstone, the sandstone being hardened near the edge of dyke. The dyke in the foreground is about 3 metres wide. It is one of many intruded during the emplacement of the subvolcanic centres of north and central Arran. The dykes have fine-grained, chilled margins, and rather coarser-grained centres, which are more resistant to weathering. For about 4 metres on either side of the dyke, the heat of the intruding basaltic magma caused the sandstone to undergo recrystallization along grain boundaries. This baking process increases the hardness of the sandstone. |
| 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: | 203500 |
| Y latitude/northing: | 620800 |
| Coordinate reference system, ESPG code: | 27700 (OSGB 1936 / British National Grid) |
| Orientation: | Landscape |
| Size: | 281.26 KB; 1000 x 762 pixels; 85 x 65 mm (print at 300 DPI); 265 x 202 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images, Geoscience subjects/ Stratigraphical, Geoscience subjects/ Igneous features/ Dykes |
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