USGS Visual Identifier

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GEOLEX database

Geologic Unit: Panaca

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)
Usage in Publication:
Panaca formation*

Modifications: Geologic Province: Dominant Lithology:
 Named
 Great Basin province
 Tuff

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).


Publication:
Rowley, P.D., Snee, L.W., Mehnert, H.H., Anderson, R.E., Axen, 
   G.J., Burke, K.J., Simonds, F.W., Shroba, R.R., and Olmore, 
   S.D., 1992, Structural setting of the Chief mining district, 
   eastern Chief Range, Lincoln County, Nevada, IN Thorman, 
   C.H., ed., Application of structural geology to mineral and 
   energy resources of the central and western United States: 
   U.S. Geological Survey Bulletin, 2012-H, p. H1-H17.
Usage in Publication:
Panaca Formation*

Modifications: Geologic Province: Dominant Lithology:
 Age modified
 Biostratigraphic dating
 Great Basin province
 

Summary:
Age is late Miocene and Pliocene based on mammalian vertebrate fossils.
Source: GNU records (USGS DDS-6; Menlo GNULEX).