boulder clay

noun

Definition of boulder clay

: an unassorted glacial deposit containing much clay in the matrix surrounding pebbles, boulders, and other rock fragments : till

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Learn More About boulder clay

Dictionary Entries Near boulder clay

boulder belt

boulder clay

boulder fern

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Cite this Entry

“Boulder clay.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/boulder%20clay. Accessed 6 Dec. 2021.

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