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Granger Island Member of Tymochtee Formation named in northwestern OH, near Waterville. Unit is composed of 1.5 m of fossiliferous gray dolomite with calcite pseudomorphs. Overlies Greenfield Formation; underlies Ovitt Road Member (new) of Tymochtee Formation. Age is Late Silurian.
Source: GNU records (USGS DDS-6; Reston GNULEX).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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