| P number: | P217610 |
|---|---|
| Old photograph number: | C04100 |
| Caption: | Injected striped schists, Glen Finnan, Invernessshire. |
| Description: | Injected striped (pelitic/psammitic) schists of the Moine (Precambrian) from Glen Finnan, River Finnan c. 2.0 km. north of railway viaduct across and on the left bank of the river. The schists are cut by mainly concordant pegmatite veins (light-coloured) and by thin concordant lenticular bodies of garnetiferous hornblende-schist. The shallow curving trench which runs across the photograph marks the outcrop of a hornblende-schist band which has been partly removed by erosion. Striped and banded schists comprise rocks made up of psammite (commonly quartzitic) and pelite in alternating bands and laminae too thin to be individually mapped. The bands are c. 3 cm. to several metres in thickness and represent alternating sand and mud deposition. The Moine Succession is a group of metasedimentary rocks, the oldest may have been deposited on the Lewisan basement between 1500 and 1025 Ma ago. Its younger members pass upwards into the Dalradian. The Moine rocks were deformed and metamorphosed by 740 Ma when a suite of concordant pegmatites was emplaced during a period of migmatization. |
| Date taken: | Fri Jan 01 00:00:00 GMT 1954 |
| Photographer: | Fisher, W.D. |
| Copyright statement: | Crown |
| X longitude/easting: | 191500 |
| Y latitude/northing: | 783500 |
| Coordinate reference system, ESPG code: | 27700 (OSGB 1936 / British National Grid) |
| Orientation: | Landscape |
| Size: | 297.93 KB; 1000 x 708 pixels; 85 x 60 mm (print at 300 DPI); 265 x 187 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images |
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