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Hamilton period

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Hamilton period \Ham"il*ton pe"ri*od\ (Geol.)
   A subdivision of the Devonian system of America; -- so named
   from Hamilton, Madison Co., New York. It includes the
   Marcellus, Hamilton, and Genesee epochs or groups. See the
   Chart of {Geology}.
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