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Geologic Unit: Keetley
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Map showing publication footprint
  • Usage in publication:
    • Keetley volcanics
  • Modifications:
    • First used
  • Dominant lithology:
    • Andesite
    • Tuff
    • Agglomerate
  • AAPG geologic province:
    • Uinta basin
Publication:

Kildale, M.D., 1958, Geology and mineralogy of the Park City district, Utah: Mineralogical Society of Utah Bulletin, v. 8, no. 2, p. 5-10.


Summary:

First published use of name. Intent to name and designation of type not stated. Probably named for town of Keetley, south of Park City in Wasatch Co, UT in the Uinta basin. Is well exposed between Silver Fork Junction and Hailstone in Wasatch Co. Not distinguished from other volcanic rocks on a geologic sketch map. Consists of andesitic flows, agglomerates, and tuffs. Unconformably overlies older folded sedimentary rocks. [No other contact relations described.] Age not stated.

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


Map showing publication footprint
  • Usage in publication:
    • Keetley Volcanics*
  • Modifications:
    • Geochronologic dating
  • AAPG geologic province:
    • Wasatch uplift
Publication:

Crittenden, M.D., Jr., Stuckless, J.S., Kistler, R.W., and Stern, T.W., 1973, Radiometric dating of intrusive rocks in the Cottonwood area, Utah: U.S. Geological Survey Journal of Research, v. 1, no. 2, p. 173-178.


Summary:

The following radiometric dates have been obtained from biotite in the Keetley Volcanics east of Draper, Heber quad, UT in Utah Co on the Wasatch uplift--34.0 +/-1.0, 32.7 +/-1.0, 35.1 +/-1.1 m.y. These are early Oligocene dates. These volcanics are intruded by shallow stocks. Represent the last phase of igneous activity near the Park City district.

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


Map showing publication footprint
  • Usage in publication:
    • Keetley Volcanics*
  • Modifications:
    • Geochronologic dating
  • AAPG geologic province:
    • Uinta uplift
Publication:

Bryant, Bruce, Naeser, C.W., Marvin, R.F., and Mehnert, H.H., 1989, Ages of Late Paleogene and Neogene tuffs and the beginning of rapid regional extension, eastern boundary of the Basin-and-Range province near Salt Lake City, Utah, IN Evolution of sedimentary basins; Uinta and Piceance basins: U.S. Geological Survey Bulletin, 1787-K, p. K1-K12.


Summary:

An age of 36.0 +/-3.8 m.y. obtained from zircon from a tuff at or near the base of the conglomerate that is below and interfingers with Keetley Volcanics and unconformably overlies the Wasatch Formation. Sample came from locality south of the Weber River in western Summit Co, UT on the Uinta uplift in the East Canyon graben.

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


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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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