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National Geologic Map Database
Geologic Units: Desert Divide
Map showing publication footprint
  • Usage in publication:
    • Desert Divide Group
  • Modifications:
    • Mapped
  • AAPG geologic province:
    • Peninsular Ranges province
Publication:

Brown, A.R., 1980, Limestone deposits of the Desert Divide, San Jacinto Mountains, California, IN Fife, D.L., and Brown, A.R., eds., Geology and mineral wealth of the California desert; Dibblee volume: South Coast Geological Society Guidebook, October 11-12, 1980, p. 284-293.


Summary:

Mapped in a 1.5-mile-wide strip through a portion of the Desert Divide San Jacinto Mtns., CA. [Map also appears in Brown (1981) with more detailed information].

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


Map showing publication footprint
  • Usage in publication:
    • Desert Divide Group
  • Modifications:
    • Named
  • Dominant lithology:
    • Quartzite
    • Schist
  • AAPG geologic province:
    • Peninsular Ranges province
Publication:

Brown, A.R., 1981, Structural history of the metamorphic, granitic and cataclastic rocks in the southeastern San Jacinto Mountains, IN Brown, A.R., and Ruff, R.W., eds., Geology of the San Jacinto Mountains: South Coast Geological Society Guidebook, October 10-11, 1981, no. 9, p. 100-138.


Summary:

Name first used (thesis, Brown, 1968) and mapped in Brown (1980). Named for metasedimentary rocks of Fraser (1931) for the Desert Divide Ridge, southwestern San Jacinto Mtns., [Idyllwild 15' quad], Riverside Co., CA. Divided into (ascending) Bull Canyon Formation (new) and Ken Quartzite (new). Consists mainly of gneiss, schists, and quartzites. Is as much as 8000 ft. thick in mapped area. Intruded by middle Cretaceous granitic rocks (Larsen and others, 1958). Both underlie Quaternary sediments including the Bautista Formation. Assigned Paleozoic(?) age based on stratigraphic relations.

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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