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A fine sediment composed of sand, silt, and mud deposited by a stream on its bank or floodplain. Alluvium may contain rich deposits of clay.

Synonyms and Related Terms

Alluvium (Deut.); Alluvalböden (Deut.); aluvión (Esp.); alluvion (Fr.); aluvião (Port.); alluvium (Ned.)

Sources Checked for Data in Record

  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971 Comment: p. 905
  • Random House, Webster's Encyclopedic Unabridged Dictionary of the English Language, Grammercy Book, New York, 1997
  • The American Heritage Dictionary or Encarta, via Microsoft Bookshelf 98, Microsoft Corp., 1998