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Geologic Unit: Sheep Hole Pass
Map showing publication footprint
  • Usage in publication:
    • Sheep Hole Pass Granite*
  • Modifications:
    • Named
  • Dominant lithology:
    • Granite
  • AAPG geologic province:
    • Mojave basin
Publication:

Howard, K.A., 2002, Geologic map of the Sheep Hole Mountains 30' x 60' quadrangle, San Bernardino and Riverside Counties, California: U.S. Geological Survey Miscellaneous Field Studies Map, MF-2344, 2 sheets, scale 1:100,000


Summary:

Unit is named the Sheep Hole Pass Granite of the Coxcomb Intrusive Suite (new) for Sheep Hole Pass between the Sheep Hole and Bullion Mountains in the west part of the Sheep Hole Mountains 30'x60' quad. Is exposed widely in the eastern Bullion Mountains as the Sheep Hole Pass pluton. Medium-grained, equigranular biotite -muscovite monzogranite, leucomonzogranite, and granodiorite. Intrudes the Sheep Hole Mountains Granodiorite. Age is Late Cretaceous.

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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