Generalized stratigraphy after Hintze, L.F., 1988, Geologic History
of Utah; A Field Guide to Utah's Rocks: Brigham Young University Geology
Studies Special Publication 7, p. 194 [Bryce Canyon-Escalante Area]; and,
Davis, George H., and Pollock, Gayle L., 2000, Geology of Bryce Canyon
National Park, Grand County, Utah: In Geology of Utah's Parks and Monuments,
Sprinkel, D.A., Chidsey, T.C., and Anderson, P.B., eds., Utah Geological
Association Publication 28., p. 37-60.
Stratigraphic unit information is modified from the USGS GeoLex (Lexicon
of Geology): http://ngmdb.usgs.gov/Geolex/geolex_qs.html.
A generalized geologic time scale is available at: http://3dparks.wr.usgs.gov/coloradoplateau/timescale.htm.
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