Today is day four of the geo advent calendar and #StromatoliteSunday, so this polished piece of Cotham marble is perfect for today. Cotham marble is also known as landscape marble because the structures within it resemble trees in a field. ‘Marble’ is a misnomer because this is actually a stromatolitic limestone.
| Accession Number | F0015 |
| Status | Accessioned |
| Specimen Type | Fossil |
| Brief Description | Stromatolite |
| Full Description | Cut and polished slice of Cotham marble, a rare decorative stone named after a suburb in Bristol. The laminations and tree-like patterns were formed by algae. Also contains quartz/calcite-filled cavities |
| Quantity | 1 |
| Age (Ma) | 200 |
| Location | Bristol, England |
| Acquisition Method | Purchased |
| Acquisition Details | Festival of Geology, University College London – £35.00 |
| Acquisition Date | 2016-11-05 |
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