| P number: | P531424 |
|---|---|
| Caption: | Photomicrograph of limestone. Light: XPL. Magnification: x2.5. Roadside 550-650 yards south-west of Cill Chriosd (Kilchrist) Church, Invernessshire, Scotland. |
| Description: | A grey, fine-grained saccharoidal limestone. This specimen is Cambro-Ordovician in age. BGS sample number SL 249. British Geological Survey Petrology Collection sample number S 35349. Photomicrograph details: Light: XPL, Magnification: x2.5. In thin section shows patchily varying grain size, being mostly of grain size 0.05-0.2 mm, but in places 0.01 mm or less and elsewhere of coarse grain up to 1.0 mm. Associated with the coarser carbonate are small areas of microcrystalline aggregate consisting of clear grains of carbonate and dark finely granular calcsilicates which include pyroxene and tremolite. Curved areas of coarser grain than the groundmass represent shell fragments. In summary, the rock is a limestone with calcsilicates, with a variable grain size and containing recrystallized fossil remains. |
| Date taken: | Sun Jun 25 00:00:00 GMT 1905 |
| Photographer: | Unknown |
| Copyright statement: | Unknown |
| Orientation: | Landscape |
| Size: | 368.48 KB; 1000 x 663 pixels; 85 x 56 mm (print at 300 DPI); 265 x 175 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images |
Loading...
Loading...
Reviews
There is currently no feedback