| P number: | P001682 |
|---|---|
| Old photograph number: | B00119 |
| Caption: | Ard Shieldaig, Loch Torridon, Ross & Cromarty. Cliff of Lewisian gneiss showing dark amphibolite layers within pale quartzofeldspathic gneiss. |
| Description: | Ard Shieldaig, Loch Torridon, Ross & Cromarty. Cliff of Lewisian gneiss showing dark amphibolite layers within pale quartzofeldspathic gneiss. The Lewisian rocks are well-layered and are well-jointed parallel to the layering. The pale layers, forming most of the rock are quartzofeldspathic gneisses. The darker layers are made of amphibolite, typically with large feldspar crystals in the centres of the layers. These amphibolites are interpreted as Scourie dykes which were intruded into the quartzofeldspathic gneisses about 2400 million years ago, and then recrystallized and rotated into parallelism with the layering in the gneisses during the Laxfordian reworking, about 1800 million years ago. |
| Date taken: | Mon Jan 01 00:00:00 GMT 1894 |
| 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: | 181500 |
| Y latitude/northing: | 853500 |
| Coordinate reference system, ESPG code: | 27700 (OSGB 1936 / British National Grid) |
| Orientation: | Landscape |
| Size: | 159.71 KB; 1000 x 755 pixels; 85 x 64 mm (print at 300 DPI); 265 x 200 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images, Geoscience subjects/ Stratigraphical |
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