medina epoch

Medina epoch

Me*di"na ep"och\ [From Medina in New York.] (Geol.) A subdivision of the Niagara period in the American upper Silurian, characterized by the formations known as the Oneida conglomerate, and the Medina sandstone. See the Chart of Geology.
Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.
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