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National Geologic Map Database
Geologic Unit: Decoy
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  • Usage in publication:
    • Decoy Limestone*
  • Modifications:
    • Named
  • Dominant lithology:
    • Limestone
  • AAPG geologic province:
    • Great Basin province
Publication:

McCollum, L.B., and Miller, D.M., 1991, Cambrian stratigraphy of the Wendover area, Utah and Nevada: U.S. Geological Survey Bulletin, 1948, 43 p.


Summary:

Named derived from Decoy, site along Nevada Northern Railroad, Decoy 7.5' quad. Type section designated as 60-m-thick massive, light-gray limestone exposed one km west of Morgan Pass, sec.21 T32N R68E, Morgan Pass 7.5' quad, northern Goshute Mountains, Elko Co, NV. Is equivalent to unit E of Day and others (1987). Is present south of Silver Zone Pass in central Toano Range and in northern Goshute Mountains. Overlies Morgan Pass Formation (new); underlies Shafter Formation (new). No faunas have been recovered; however, unit is bracketed by late Middle Cambrian faunas in adjacent formations. Age is considered Middle Cambrian.

Source: GNU records (USGS DDS-6; Menlo GNULEX).


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates published by U.S. Geological Survey authors.

"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).

Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).