| P number: | P552960 |
|---|---|
| Caption: | Main Limestone. Old Quarry 300 yards north-west of Crosshouse Farm, 1.5 miles south of Hairmyres station. Lanark. |
| Description: | A compact, dull brownish-grey limestone showing scattered small crinoid columnals. Composed of large and small debris of shells and crinoids, with many spines, scattered foraminifera and ostracods, scarce polyzoa and phosphatic fossil fragments, in a matrix of pelitomorphic calcite which is recrystallized to granular calcite of grain-size usually about 0.02 mm but varying up to about 0.15 mm in places. The section also contains one fragment of kaolinfilled cavernous limonite and two nodules of semi-opaque marl which may be faecal in origin. There is a considerable dissemination of ferruginous clay in the matrix and this is locally concentrated in thin black stylolitic films. Recrystallization has nearly obliterated many small organisms in the matrix and has affected some of the crinoid columnals. Limestone, pelitomorphic, microfossiliferous, clastizoic. SL0223. Britrocks S35081. 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: | 377.04 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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