mud·​stone ˈməd-ˌstōn How to pronounce mudstone (audio)
: an indurated shale produced by the consolidation of mud

Examples of mudstone in a Sentence

Recent Examples on the Web According to the listing in the Portable Antiquities Scheme’s database, the rock is probably mudstone or shale. Sarah Kuta, Smithsonian Magazine, 15 May 2024 This is a land of limestone, sandstone, siltstone, and mudstone — basic sedimentary rock. Discover Magazine, 9 Feb. 2024 All three holes intersected wide bands of favourable claystone and mudstones. Fort Worth Star-Telegram, 25 Jan. 2024 Bordering one surface, Liu noticed, was a small shelf of mudstone that bore a red patina. Robert Moor, Discover Magazine, 5 Oct. 2016 Its robotic arm drilled a 2.5-inch borehole in mudstone bedrock. Adam Hadhazy, Discover Magazine, 9 Dec. 2013 Galestro is a crumbly marl (mudstone) made of layered limestone and sandstone. Joseph V Micallef, Forbes, 18 Dec. 2022 Salt crystals left impressions in 3.5 billion-year-old mudstone, part of WesternAustralia's Pilbara Craton. Gemma Tarlach, Discover Magazine, 11 June 2019 The mudstone and carbonate sediment around the specimens indicates that the site had been deep underwater. Max G. Levy, WIRED, 19 Dec. 2022

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'mudstone.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

circa 1736, in the meaning defined above

Time Traveler
The first known use of mudstone was circa 1736

Dictionary Entries Near mudstone

Cite this Entry

“Mudstone.” Dictionary, Merriam-Webster, Accessed 24 Jul. 2024.

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