| P number: | P521263 |
|---|---|
| Caption: | Rock specimen of sandstone. Near Torridon, Rosshire, Scotland. |
| Description: | The sample is a fine-grained uniform, grey-coloured sandstone, with distinctive ripple features on the bedding surface. British Geological Survey Petrology Collection sample number EMC284. The face of the sample represents a surface which was once on the bed of a river, or tidal estuary, much as can be seen in the tidal zone of a beach sand today. In the late Precambrian times (1000-750 Ma) the eroded land surface of the Lewisian gneiss of the North-west Highlands was covered by a thick accumulation of sediments. These sediments are known as the Torridonian and they are mostly an assemblage of red to reddish-brown terrestrial sedimentary rocks laid down under mostly fluviatile (river) conditions with local scree breccias near the contact with the Lewisian. |
| Date taken: | Sun Dec 01 00:00:00 GMT 2002 |
| Photographer: | McTaggart, F.I. |
| Associate: | T.S. Bain |
| Copyright statement: | NERC |
| Additional information: | EMC284 |
| Orientation: | Landscape |
| Size: | 239.22 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: | Best of BGS Images/ Geological structures |
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