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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The photo above and to the right is a succession of alternating sandstone beds and mudstone beds (note trees for scale).
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.
Circa 1736
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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