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Geologic Unit: Bear Mountain
Map showing publication footprint
  • Usage in publication:
    • Bear Mountain Volcanics
  • Modifications:
    • Named
  • Dominant lithology:
    • Andesite
  • AAPG geologic province:
    • Modoc Plateau province
    • Great Basin province
Publication:

Hulbe, C.W.H., 1980, A note on the geology of the Warner Mountains, IN Kramer, J.C., ed., Geologic guide to the Modoc Plateau and the Warner Mountains: Geological Society of Sacramento Annual Field Trip Guidebook, p. 149-156.


Summary:

[Probably named from Bear Mountain, Payne Peak 7.5' quad, Modoc Co, CA]. Well exposed at summit of Cedar Pass on US Highway 299 [in Payne Peak 7.5' quad]. Is dominantly light-colored andesite tuff breccia; flows are minor platy olivine andesites and hornblende andesites. Overlies(?) Dry Creek Volcanics (new). Age of units in study area (Warner Mountains) given as Tertiary.

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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