mudstone

noun
mud·stone | \-ˌstōn \

Definition of mudstone 

: an indurated shale produced by the consolidation of mud

Examples of mudstone in a Sentence

Recent Examples on the Web

Because ultraviolet radiation and oxidizing compounds in the martian soil would destroy any compounds exposed at the surface, Curiosity's scientists used a robotic drill to penetrate several centimeters into the mudstone. Paul Voosen, Science | AAAS, "NASA rover hits organic pay dirt on Mars," 7 June 2018 Everything else told them that the lake environment in which the mudstones formed 3 billion years ago would have been a likely place for life to exist. Eric Berger, Ars Technica, "Finally, scientists have found intriguing organic molecules on Mars," 7 June 2018 The mudstone samples analyzed by Curiosity came from Confidence Hill and Mojave, two sites near the base of Mount Sharp in Gale crater. Jay Bennett, Popular Mechanics, "Chasing Signs of Life, Curiosity Rover Discovers Organic Building Blocks on Mars," 7 June 2018 Searching for life beyond Earth means searching for organic compounds (like the organic matter in the mudstone) and molecules (methane is considered the simplest organic molecule). Doug Criss, CNN, "5 things for June 8: Trump summits, leak probe, migrants, suicides, Mars," 8 June 2018 The rover began exploring an iron-rich ridge, leaving the mudstone behind. Paul Voosen, Science | AAAS, "NASA rover hits organic pay dirt on Mars," 7 June 2018 Curiosity drilled samples of mudstone in a region that is thought to have been a lake about three and a half billion years ago. Jay Bennett, Popular Mechanics, "Chasing Signs of Life, Curiosity Rover Discovers Organic Building Blocks on Mars," 7 June 2018 In a related finding also published in Science Thursday, space agency scientists said that the Curiosity rover found organic molecules contained in samples of three-billion-year-old mudstone on Mars. Robert Lee Hotz, WSJ, "Mars Rover Curiosity Finds More Clues to the Potential for Life," 7 June 2018 After more than four decades of searching for organic molecules on the surface of Mars, scientists have conclusively found them in mudstones on the lower slopes of Mount Sharp. Eric Berger, Ars Technica, "Finally, scientists have found intriguing organic molecules on Mars," 7 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mudstone.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of mudstone

circa 1736, in the meaning defined above

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Last Updated

14 Sep 2018

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The first known use of mudstone was circa 1736

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