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Map showing publication footprint
  • Usage in publication:
    • Antelope Mountain Quartzite*
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Quartzite
  • AAPG geologic province:
    • Klamath Mountains province
Publication:

Hotz, P.E., 1977, Geology of the Yreka quadrangle, Siskiyou County, California: U.S. Geological Survey Bulletin, 1436, 72 p., (incl. geologic map, scale 1:62,500)


Summary:

Pg. 17-19, geol. map. Antelope Mountain Quartzite. Greenish-gray, gray, brown, and tan, medium- to coarse-grained, moderately well to poorly sorted, well-bedded quartz arenites. Includes some beds and lenses of chert alternating with clastic rocks. Thickness may be 4,900 to 5,500 feet (1,500 to 1,700 m). Underlies Cretaceous and Tertiary rocks. Overlies Duzel Phyllite, in most places contact is modified by faulting. Some rocks are similar to the Duzel; the Antelope Mountain may be a facies of the Duzel. Age is tentatively considered Ordovician(?).
Type locality: main ridge of Antelope Mountain, in secs. 26 and 35, T. 44 N., R. 7 W., and in secs. 2, 3, and 10, in T. 43 N., R. 7 W., Yreka 15-min quadrangle, Siskiyou Co., northern CA. Named from Antelope Mountain.

Source: Publication; US geologic names lexicon (USGS Bull. 1564, p. 4); GNU records (USGS DDS-6; Menlo GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Antelope Mountain Quartzite*
  • Modifications:
    • Age modified
  • AAPG geologic province:
    • Klamath Mountains province
Publication:

Potter, A.W., Hotz, P.E., and Rohr, D.M., 1977, Stratigraphy and inferred geologic settings of lower Paleozoic rocks in the eastern Klamath Mountains, northern California, IN Stewart, J.H., Stevens, C.H., and Fritsche, A.E., eds., Paleozoic paleogeography of the western United States; Pacific Coast paleogeography symposium I: Society of Economic Paleontologists and Mineralogists, Pacific Section, Pacific Coast Paleogeography Symposium, Bakersfield, CA, April 22, 1977, 1, p. 421-440.


Summary:

Antelope Mountain Quartzite. Included in Yreka assemblage, eastern Klamath Mountains. Locally interbedded with or overlies Duzel Phyllite. Shown on sketch map of Yreka-Gazelle-Callahan area. Age of Yreka assemblage is provisionally considered Ordovician and/or Silurian.

Source: Modified from 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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