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Geologic Unit: Silver Lake
Map showing publication footprint
  • Usage in publication:
    • Silver Lake Formation*
  • Modifications:
    • Named
    • Biostratigraphic dating
  • Dominant lithology:
    • Siltstone
    • Limestone
  • AAPG geologic province:
    • Mojave basin
Publication:

Walker, J.D., and Wardlaw, B.R., 1989, Implications of Paleozoic and Mesozoic rocks in the Soda Mountains, northeastern Mojave Desert, California for late Paleozoic and Mesozoic Cordilleran orogenesis: Geological Society of America Bulletin, v. 101, no. 12, p. 1594-1583.


Summary:

Unit is named the Silver Lake Formation. Consists of siltstone, limestone, silty and iron-rich cherty limestone, and conglomerate (all locally metamorphosed to marble and calc-silicate hornfels). Thickness is not stated. Unconformably overlies an unnamed Permian marble and calc-silicate rocks sequence; either conformably or disconformably underlies volcanic rocks of the Triassic and Jurassic Soda Mountain Formation of Grose (1959). Age is Early Triassic based on fossils [conodonts] from the lower part of the unit and on regional 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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