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National Geologic Map Database
Geologic Unit: Panaca
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Map showing publication footprint
  • Usage in publication:
    • Panaca formation*
  • Modifications:
    • Named
  • Dominant lithology:
    • Tuff
  • AAPG geologic province:
    • Great Basin province
Publication:

Westgate, L.G., and Knopf, Adolph, 1932, Geology and ore deposits of the Pioche district, Nevada: U.S. Geological Survey Professional Paper, 171, 79 p., (incl. geologic map, scale 1:62,500)


Summary:

Deposits called "Panaca beds" by Stock (1921, in abstract) for village of Panaca, Lincoln Co, NV. Here unit named Panaca formation for exposures east and west of Panaca in Meadow Valley and Patterson Wash. Best exposures are in south half of Ely Range quad. Consists of series of water-laid tuffs lying in essentially same position as when they were deposited. Beds range from snow-white through cream and brown to terra cotta color. Concretions (dark-gray or brownish-gray flinty bodies) occur in middle and upper parts of Panaca tuffs in buttes in northern part of Panaca village. Tuffs include diatoms [listed in report]. Thickness is at least several 100 ft. About 2 mi north of Panaca, unit lies against 30 deg slope of Cambrian limestone. Age is Pliocene(?) based on mammalian fossils found by Stock (1921).

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


Map showing publication footprint
  • Usage in publication:
    • Panaca Formation*
  • Modifications:
    • Age modified
    • Biostratigraphic dating
  • AAPG geologic province:
    • Great Basin province

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

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).