| P number: | P553060 |
|---|---|
| Caption: | Stinchar Limestone. Aldons Limeworks, 1.5 miles south of Pinmore station. Ayr. |
| Description: | A dark grey compact limestone showing films of calcite coating irregular joints or fracture surfaces. Microscopically it is a calcilutite (calcite-mudstone) greatly recrystallized to clear granular calcite, 0.02 - 0.01 mm grain size. Numerous aggregations of algal tubes (Girvanella) are present and have in part resisted the recrystallization which has affected the matrix. Ostracods are common and parts of the rock are rich in crinoid columnals and shell fragments. A little quartz (about 3 - 5% ) is present and pyrite in similar proportions occurs in small irregular grains and clots. In places clayey material is present in sufficient quantity to give the appearance of a calcite breccia with clay matrix. The rock contains fragments of pelitomorphic limestone and is veined and patched by coarsely crystallized calcite. Limestone, varigrained, zoichnic, clastizoic, homoiolithic. SL0266. Britrocks S35504. Magnification x40. Light PPL. |
| Date taken: | Wed Jan 21 00:00:00 GMT 2004 |
| Photographer: | Sutherland, A. |
| Copyright statement: | NERC |
| Additional information: | Description from: Limestones of Scotland: chemical analyses and petrography. Edinburgh : HMSO, 1956. |
| Orientation: | Landscape |
| Size: | 317.14 KB; 1000 x 750 pixels; 85 x 64 mm (print at 300 DPI); 265 x 198 mm (screen at 96 DPI); |
| Average Rating: | Not yet rated |
| Categories: | Unsorted Images |
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