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.
|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|
|Acquisition Details||Festival of Geology, University College London – £35.00|