oolite

A geologist examines an oolite sample under a magnifying glass.

Definition

1. Noun (Geology):
   • Oolite is a type of sedimentary rock, typically limestone, composed of small, spherical grains called ooids. These grains are usually formed by the concentric precipitation of calcium carbonate around a nucleus, such as a sand grain or shell fragment.

Usage Examples

• (A rock made of small spherical grains.)
• (The rock type used for paleoenvironmental analysis.)

Advanced Usage

• Oolitic limestone: a more specific term for limestone that is entirely or predominantly composed of ooids.

  • The oolitic limestone from the Jurassic period is prized for its uniform texture. (A limestone variety with ooids.)

• Oolite formation: the geological process by which ooids accumulate and solidify into rock.

  • The oolite formation in the Bahamas is an active modern analog for ancient deposits. (The process of oolite rock creation.)

Variants and Related Words

• Ooid (n): the small, spherical grain that makes up oolite.

  • Each ooid in the rock is less than two millimeters in diameter. (The individual grain of oolite.)

• Oolitic (adj): relating to or composed of oolite.

  • The building's facade is made of oolitic stone, giving it a granular texture. (Describing stone that contains ooids.)

Synonyms

• Eggstone: a historical term for oolite due to its resemblance to fish eggs.
• Roestone: another synonym, emphasizing the rock's granular appearance.

Related Idioms

• No direct idioms: "Oolite" is a technical geological term and does not appear in common idiomatic expressions.

Phrasal Verbs

• No phrasal verbs: As a noun, "oolite" does not form phrasal verbs.