a formation or deposit consisting of mud, clay, etc., in which boulders are embedded.
单词 | θ5002 |
释义 | the world > the earth > structure of the earth > structural features > boulder, pebble, or stone formation > [noun] > boulder formation (4) boulder-formation1845 a formation or deposit consisting of mud, clay, etc., in which boulders are embedded. boulder-drift1876 = boulder-formation n. boulder-pavement1894 a bed of boulders naturally arranged. boulder-train1967 boulders deposited by the melting of a glacier. |
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