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Geologic Unit: Charcoal Canyon
Map showing publication footprint
  • Usage in publication:
    • Charcoal Canyon Formation
  • Modifications:
    • First used
  • Dominant lithology:
    • Argillite
    • Chert
  • AAPG geologic province:
    • Great Basin province
Publication:

Kay, Marshall, 1962, Classification of Ordovician Chazyan shelly and graptolite sequences from central Nevada, IN Short Note: Geological Society of America Bulletin, v. 73, no. 11, p. 1421-1430.


Summary:

[Name "Charcoal Canyon" used in diagrams by Kay (1960)]. Charcoal Canyon Formation is listed as oldest formation (of 4) of Clipper Canyon Group in northern Toquima Range, NV. Consists principally of siliceous argillite and chert, with quartz siltstone and lava interbed some 2,000 ft thick. Underlies Petes Summit Formation of Clipper Canyon Group. Age given as Ordovician (Arenigian).

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


Map showing publication footprint
  • Usage in publication:
    • Charcoal Canyon Formation
  • Modifications:
    • Named
  • Dominant lithology:
    • Argillite
    • Chert
    • Siltstone
  • AAPG geologic province:
    • Great Basin province
Publication:

Kay, Marshall, and Crawford, J.P., 1964, Paleozoic facies from the miogeosynclinal to the eugeosynclinal belt in thrust slices, central Nevada: Geological Society of America Bulletin, v. 75, no. 5, p. 425-454, (incl. geologic map, scale approx. 1:35,000)


Summary:

Named for Charcoal Canyon, opposite and above East Clipper Canyon and Anvil Rock, Lander Co, NV. Is oldest formation (of 4) in Clipper Canyon Group (new). Shown on map of Petes Summit Sheet, Toquima Range, Nye and Lander Cos, NV. Typical exposures are in west slope of Clipper Canyon between Charcoal Canyon and Rock Rapids Canyon to south. Consists of predominantly black and gray siliceous argillites and laminated cherts with siltstone and lava interbeds; many exposures have finely banded gray, black and pink siliceous rock with grading silt and clay phases. Base is not exposed. Is about 2,000 ft thick. No fossils have been found but as those in overlying Petes Summit Formation (new) are Arenigian, Charcoal Canyon Formation is considered Early Ordovician and perhaps older. Locally unconformably underlies Tertiary sedimentary and volcanic rocks.

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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