| P number: | P001184 |
|---|---|
| Old photograph number: | D04638 |
| Caption: | View west along Loch Cluanie from near the Cluanie Dam. Highland Region. This eastern end of the loch is composed of the Cluanie Granodiorite, a major igneous intrusion of late- to post-tectonic (late-Caledonian orogeny) age. |
| Description: | View west along Loch Cluanie from near the Cluanie Dam. Highland Region. This eastern end of the loch is composed of the Cluanie Granodiorite, a major igneous intrusion of late- to post-tectonic (late-Caledonian orogeny) age. The Cluanie Intrusion covers 18 square kilometres and is composed of a single rock type a variably porphyritic hornblende-biotite granodiorite within which there are several textural variants depending on the occurrence of megacrysts. A granodiorite is a coarse-grained acid igneous rock consisting of quartz, calc-alkali feldspar and various ferromagnesian minerals, commonly and in this case, hornblende. Megacrysts are crystals in an igneous rock that are significantly larger than the surrounding groundmass or matrix. |
| Date taken: | Mon Jan 01 00:00:00 GMT 1990 |
| Photographer: | Bain, T.S. |
| Copyright statement: | NERC |
| Acknowledgment: | This image was digitized with grant-in-aid from SCRAN the Scottish Cultural Resources Access Network |
| X longitude/easting: | 218500 |
| Y latitude/northing: | 809500 |
| Coordinate reference system, ESPG code: | 27700 (OSGB 1936 / British National Grid) |
| Orientation: | Landscape |
| Size: | 284.53 KB; 1000 x 789 pixels; 85 x 67 mm (print at 300 DPI); 265 x 209 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images |
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