| P number: | P521413 |
|---|---|
| Caption: | Rock specimen of granite. Ross of Mull, Argyllshire, Scotland. |
| Description: | The sample is a coarse-grained granite with uniform granular texture comprising intergrown quartz (grey colour), feldspar (pink and flesh colour) and small biotite flakes (black). British Geological Survey Petrology Collection sample number EMC946. The Ross of Mull granite is classified as a biotite-microcline granite, with a salmon-pink to warm red colour. It has been used as a building stone for buildings such as Iona Abbey, Skerryvore, Ardnamurchan, Dhu Hartach and Hyskeir Lighthouses, Blackfriars, Westminster, and Holburn Viaduct bridges in London, and buildings in Glasgow, New York, Liverpool, Manchester and in Wellington, New Zealand. The Ross of Mull granite is classed as one of the Newer Granites of the Scottish Highlands. They are a group of major plutons and smaller masses that were intruded later than the main Caledonian period of metamorphism and before the deposition of the Devonian Old Red Sandstone. It is a coarse-grained muscovite-biotite granite with a handsome pink colour. It has been quarried and extensively used as a building stone. The intrusion is wedge-shaped with its base dipping at 30 degrees from the east shore of Iona. It has been dated at about 420 Ma. and it is thought that it has been intruded along the plane of the Moine Thrust. |
| Date taken: | Sun Dec 01 00:00:00 GMT 2002 |
| Photographer: | McTaggart, F.I. |
| Associate: | T.S. Bain |
| Copyright statement: | NERC |
| Additional information: | EMC946 |
| Orientation: | Landscape |
| Size: | 350.85 KB; 1000 x 775 pixels; 85 x 66 mm (print at 300 DPI); 265 x 205 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images |
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