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Ooid
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Ooids are small, spheroidal, "coated" sedimentary grains, usually composed of calcium carbonate, but sometimes made up of iron- or phosphate-based minerals. Ooids usually form on the sea floor, most c
Modern ooids from a beach on Joulter Cays, The Bahamas.
Modern ooids from a beach on Joulter Cays, The Bahamas.
Ooids on the surface of limestone; Carmel Formation (Middle Jurassic) of southern Utah, USA.
Ooids on the surface of limestone; Carmel Formation (Middle Jurassic) of southern Utah, USA.
A thin slice of calcitic ooids from the Carmel Formation, Middle Jurassic, of southern Utah, USA.
A thin slice of calcitic ooids from the Carmel Formation, Middle Jurassic, of southern Utah, USA.
Fossils ooimmured in ooids from the Carmel Formation (Middle Jurassic of southern Utah).
Fossils ooimmured in ooids from the Carmel Formation (Middle Jurassic of southern Utah).