Oolitic limestone. Limestone mainly consists of calcium carbonate. Ooliths, or ooids, are spherical grains of carbonate composed of concentric layers.

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Oolitic limestone. Limestone mainly consists of calcium carbonate. Ooliths, or ooids, are spherical grains of carbonate composed of concentric layers. Specimen from Rutland, UK.

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Photo credit: © NATURAL HISTORY MUSEUM, LONDON/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: background, black, calcium, carbonate, fossiliferous, geological, geology, limestone, marine, ooid, oolith, oolitic, rock, rutland, sea, sedimentary