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Map showing publication footprint
  • Usage in publication:
    • Westwater Formation
  • Modifications:
    • Named
  • Dominant lithology:
    • Clay
    • Siltstone
    • Limestone
  • AAPG geologic province:
    • Plateau sedimentary province
Publication:

Young, R.A., 1970, Geomorphological implications of pre-Colorado and Colorado tributary drainage in the western Grand Canyon region: Plateau, v. 42, no. 3, p. 107-111.


Summary:

Shown on diagrammatic cross section of Milkweed Canyon and Peach Springs Canyon, Hualapai Plateau, northwest AZ. Composed of clay-siltstone and limestone. Underlies Milkweed Member (new) (Buck and Doe Conglomerate). Overlies Music Mountain Conglomerate (new) and locally Hindu Fanglomerate (new). Is Cenozoic age.

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


Map showing publication footprint
  • Usage in publication:
    • Westwater Formation
  • Modifications:
    • Adopted
  • Dominant lithology:
    • Limestone
    • Silt
    • Claystone
  • AAPG geologic province:
    • Plateau sedimentary province
Publication:

Billingsley, G.H., 1978, A synopsis of stratigraphy in the western Grand Canyon: Museum of Northern Arizona Research Paper, no. 16, 27 p.


Summary:

First published use of name other than in figures. Name attributed to Young (1966, unpub. dissert., Washington Univ., St. Louis, MO). Named for exposures in Westwater Canyon, a tributary to Milkweed Canyon located on northeast side of Hualapai Plateau in western Grand Canyon, Mohave Co, AZ, Plateau sedimentary province. Type not designated. Described as a massive white limestone overlain by a reddish layer of silt or claystone. Overlies Music Mountain Conglomerate (first used) and underlies Buck and Doe Conglomerate; both contacts are gradational. Assigned Miocene age.

Source: GNU records (USGS DDS-6; Denver 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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