oolite

/ˈoʊəlaɪt/
noun
  1. A type of sedimentary rock made up of small, round grains that look like fish eggs, often formed in warm, shallow seas.
    • The cliffs along the coast are made of oolite formed millions of years ago.
    • Oolite is often used as a building stone because it is easy to cut.
    • Geologists study oolite to learn about ancient ocean environments.
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