U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database
Map showing publication footprint
  • Usage in publication:
    • Clayton Mine Quartzite*
  • Modifications:
    • Named
  • Dominant lithology:
    • Quartzite
    • Conglomerate
  • AAPG geologic province:
    • Idaho Mountains province
Publication:

Hobbs, S.W., Hays, W.H., and Ross, R.J., Jr., 1968, The Kinnikinic Quartzite of central Idaho; redefinition and subdivision, IN Contributions to stratigraphy: U.S. Geological Survey Bulletin, 1254-J, p. J1-J22.


Summary:

Named for Clayton Mine, Custer Co, ID in Idaho Mountains province. Type section designated on north side Salmon River canyon, 1-2 mi west of Clayton, ID, in T11N, R17E. Is a gray, coarse- to medium-grained, feldspathic quartzite. May be thick-bedded or massive or thin-bedded. Cross-laminations occur at several intervals but are more common in lower half. Thin conglomerate lenses occur in upper two-thirds; these are of pebbly quartzite. Formerly mapped with Kinnikinic but can be distinguished from Kinnikinic by its heterogeneity. Is 1,980 ft thick at type. Base is not exposed; conformably overlain by Ella Dolomite (first published description in this report). Is unfossiliferous; assigned a Middle Ordovician or older age.

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


Map showing publication footprint
  • Usage in publication:
    • Clayton Mine Quartzite*
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Idaho Mountains province
    • Snake River basin
Publication:

Dover, J.H., 1983, Geologic map and sections of the central Pioneer Mountains, Blaine and Custer Counties, central Idaho: U.S. Geological Survey Miscellaneous Investigations Series Map, I-1319, scale 1:48,000


Summary:

Mapped in southern and western parts of Pioneer window in Blaine and Custer Cos, ID, Snake River basin and Idaho Mountains province. Consists of white, vitreous, poorly sorted, thick-bedded to massive, micaceous and feldspathic gneissose quartzite; typically splits into slabs along partings containing as much as 50% biotite. Characterized by well-developed coarse tabular cross-bedding. Contains some discontinuous layers and lenses of granule and pebble conglomerate with pink-to purplish-gray quartz clasts. Thickness is about 300-425 m. Unconformably? overlies Proterozoic Y? banded calc-silicate unit with generally concordant, but locally slightly discordant contact; base marked by about 2m of quartz-pebble conglomerate. Assigned Ordovician or older age.

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


Map showing publication footprint
  • Usage in publication:
    • Clayton Mine Quartzite*
  • Modifications:
    • Age modified
  • AAPG geologic province:
    • Idaho Mountains province
Publication:

Hobbs, S.W., and Hays, W.H., 1990, Ordovician and older rocks of the Bayhorse region, Custer County, Idaho: U.S. Geological Survey Bulletin, 1891, 40 p., (incl. geologic map, scale 1:125,000)


Summary:

Considered to be of Ordovician or older (rather than Middle Ordovician or older) age in this report on Custer Co area, ID in the Idaho Mountains province, on basis of regional stratigraphic relations. Clayton Mine disconformably (rather than conformably as originally thought) underlies the Middle Ordovician Ella Dolomite.

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


Search archives

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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).