Name Massie clay applied to beds underlying Euphemia dolomite and overlying Laurel limestone in Springfield area. Derivation of name not stated.
Source: GNU records (USGS DDS-6; Reston GNULEX).
Massie clay well exposed on north side of Massie Creek, a short distance west of Cedarville, OH. Contains a typical Waldron fauna. Thickness 5.5 ft south of Yellow Springs, OH. A clay underlying Euphemia dolomite at Bryan Farm State Park, 5 mi northwest of Cedarville and closely resembling typical Waldron is identified as Massie or Waldron clay shale, although no diagnostic fossils were found there. Age is Silurian (Niagaran).
Source: GNU records (USGS DDS-6; Reston GNULEX).
Unit shown on generalized section of western OH as uppermost member of Alger formation. Thickness 5 to 6 ft. Overlies Laurel member of Alger; underlies Euphemia formation.
Source: GNU records (USGS DDS-6; Reston GNULEX).
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