oolite
Sign in to saveAlso known as egg stone
thumb|Modern ooids from a beach on Joulter Cays, The Bahamas, with 0.5 mm scale thumb|right|Ooids on the surface of a limestone; Carmel Formation (Middle Jurassic) of southern Utah thumb|right|Thin-section of calcitic ooids from an oolite within the Carmel Formation (Middle [[Jurassic) of southern Utah]]
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- OoidSurface01.jpg
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- Oolite
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5 sectionsContents
- Composition
- Occurrence
- See also
- References
- External links
thumb|Modern ooids from a beach on Joulter Cays, The Bahamas, with 0.5 mm scale thumb|right|Ooids on the surface of a limestone; Carmel Formation (Middle Jurassic) of southern Utah thumb|right|Thin-section of calcitic ooids from an oolite within the Carmel Formation (Middle [[Jurassic) of southern Utah]]
Oolite or oölite () is a sedimentary rock formed from ooids, spherical grains composed of concentric layers. Strictly, oolites consist of ooids of diameter 0.25–2 millimetres; rocks composed of ooids larger than 2 mm are called pisolites. The term oolith can refer to oolite or individual ooids.