Definition of mudstone
: an indurated shale produced by the consolidation of mud
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Recent Examples of mudstone from the Web
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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).
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The rover began exploring an iron-rich ridge, leaving the mudstone behind.
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Curiosity drilled samples of mudstone in a region that is thought to have been a lake about three and a half billion years ago.
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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.
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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.
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After carefully accounting for background contamination from SAM, Freissinet and her colleagues baked 3-billion-year-old mudstone samples at over 500 degrees C, a temperature at which perchlorates should have fully burned away.
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The Murray formation is a rocky outcrop with characteristic bands of mudstone, possibly laid down by lakes of liquid water.
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Curiosity has found evidence of ancient lakes in older, lower-lying rock layers and also in younger mudstone that is above Old Soaker.
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.
First Known Use of mudstone
circa 1736
Learn More about mudstone
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See words that rhyme with mudstone Britannica.com: Encyclopedia article about mudstone
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