Boulder clay, in geology, is a deposit of clay, often full of boulders, which is formed in and beneath glaciers and ice-sheets wherever they are found, and was the typical deposit of the Glacial Period in northern Europe and North America.
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Famous quotes containing the word clay:
“With earth’s first clay they did the last man knead,
There of the last harvest sowed the seed,
And what the first morning of creation wrote,
The last dawn of reckoning shall read.”
—Edward Fitzgerald (1809–1883)