mudstone

noun

mud·​stone ˈməd-ˌstōn 

: an indurated shale produced by the consolidation of mud

Examples of mudstone in a Sentence

Recent Examples on the Web

The mudstone created an environment that could concentrate and preserve organic molecules and trapped them inside the fine grains of the sedimentary rock. —Ashley Strickland, CNN Money, 29 Mar. 2025

Thanks to the preservation-friendly conditions on Mars, these organic compounds remained intact in mudstone for approximately 3.7 billion years — dating back to the period when life first emerged on Earth. —Discover Magazine, 26 Mar. 2025

Buried inside a slab of ancient mudstone in what was once an inlet leading into a lake bounded by Mars’ Jezero Crater, NASA’s Perseverance rover’s sample number 25 is potentially a Martian astrobiological game-changer. —Bruce Dorminey, Forbes, 17 Aug. 2024

Curiosity has already found organic deposits trapped in mudstone that once contained organic molecules. —Harriet Marsden, theweek, 24 July 2024

Word History

First Known Use

circa 1736, in the meaning defined above

Rhymes for mudstone

• alone
• atone
• backbone
• bemoan
• bluestone
• breastbone
• brownstone
• capstone
• cheekbone
• condone
• curbstone
• cyclone