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National Geologic Map Database
Map showing publication footprint
  • Usage in publication:
    • Santiago Canyon Tuff*
  • Modifications:
    • Named
    • Reference
  • Dominant lithology:
    • Tuff
  • AAPG geologic province:
    • Great Basin province
Publication:

Bingler, E.C., 1978, Abandonment of the name Hartford Hill Rhyolite Tuff and adoption of new formation names for middle Tertiary ash-flow tuffs in the Carson City-Silver City area, Nevada, IN Contributions to stratigraphy, 1979: U.S. Geological Survey Bulletin, 1457-D, p. D1-D19.


Summary:

Named for Santiago Canyon. Type section: exposures at mouth of Santiago Canyon, NW/4 sec.5 T15N R21E, New Empire 7.5' quad, NV. Reference sections: 1) Hackett Canyon sec.9 T15N R21E, New Empire 7.5' quad, 2) hill in W/2 NE/4 sec.20 T16N R20E, Virginia Range, Carson City 7.5' quad, NV. Is simple cooling unit of gray-white to gray sphene-bearing hornblende-biotite quartz latite crystal-vitric tuff. Is over 300 m thick. Disconformably overlies older Tertiary tuffs or unconformably overlies Mesozoic rocks; unconformably underlies Alta Formation. Is late Oligocene or early Miocene age.

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


Map showing publication footprint
  • Usage in publication:
    • Santiago Canyon Tuff*
  • Modifications:
    • Geochronologic dating
    • Age modified
  • AAPG geologic province:
    • Great Basin province
Publication:

Bingler, E.C., Silberman, M.L., and McKee, E.H., 1978, K-Ar ages of Tertiary ash-flow tuffs in the Carson City-Silver City area, central western Nevada: Isochron/West, no. 22, p. 23-24.


Summary:

Santiago Canyon Tuff. Sample from Carson City area, Lat. 39 deg. 10 min. 33 sec. N., Long 119 deg. 38 min. 11 sec. W., in NE/4 SW/4 sec. 9, T. 15 N., R. 21 E., New Empire 7.5-min quadrangle, Nevada, yielded K-Ar ages of 22.8 +/-0.7 Ma (biotite) and 21.6 +/-0.9 Ma (sanidine). Age is Miocene.

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 ([ ]).

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