Named the Sylvania sandstone in northwestern OH and MI for Sylvania, Lucas Co., OH. Unit is extremely pure glass sand, 20 or more feet thick, in Lucas and Wood Cos., OH, and adjacent territory, also probably Monroe Co., MI. Occurs in midst of lower part of Helderberg or Waterlime. The Sylvania is of Devonian age.
Source: GNU records (USGS DDS-6; Reston GNULEX).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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