| P number: | P521467 |
|---|---|
| Caption: | Rock specimen of travertine. Starleyburn, one mile north of Burntisland, Fifeshire, Scotland. |
| Description: | The sample is a pale-coloured, highly porous rock, with an open sponge-like texture formed by irregular crusts and filaments of carbonate. British Geological Survey Petrology Collection sample number EMC2361. Travertine is a calcareous tufa rock which forms as deposits in hydrothermal springs in volcanic regions. The best known tufas come from Tuscany and near Rome and in Auvergne, where they have been used since Roman times as decorative building stones. At high temperatures and pressures hydrothermal solutions become saturated with calcium carbonate, which precipitates out when the springs discharge at normal air temperatures. Similar, though normally less extensive deposits, can occur at lower temperatures in cave deposits where dissolved limestone minerals are carried in percolating groundwater and deposit out as stalactites, stalagmites and other coatings. The rock is probably Recent in age. |
| Date taken: | Sun Dec 01 00:00:00 GMT 2002 |
| Photographer: | McTaggart, F.I. |
| Associate: | T.S. Bain |
| Copyright statement: | NERC |
| Additional information: | EMC2361 |
| Orientation: | Landscape |
| Size: | 269.77 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 |
Loading...
Loading...
Reviews
There is currently no feedback