\Cham*plain" pe"ri*od\ (Geol.)
A subdivision of the Quaternary age immediately following the
Glacial period; -- so named from beds near Lake Champlain.
Note: The earlier deposits of this period are diluvial in
      character, as if formed in connection with floods
      attending the melting of the glaciers, while the later
      deposits are of finer material in more quiet waters, as
      the alluvium.