Wilmette Bed (abandoned)
The Wilmette Bed has been abandoned. The facies is now described as part of the Equality Formation.
HANSEL, Ardith K. and W. Hilton JOHNSON, 1996, Wedron and Mason Groups: Lithostratigraphic Reclassification of Deposits of the Wisconsin Episode, Lake Michigan Lobe Area: Illinois State Geological Survey Bulletin 104, 116 p.
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