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Geologic Unit: Cottonwood
Map showing publication footprint
  • Usage in publication:
    • Cottonwood shales
  • Modifications:
    • Original reference
  • AAPG geologic province:
    • Nemaha anticline
    • Forest City basin
Publication:

Prosser, C.S., 1894, Kansas River section of the Permo-Carboniferous and Permian rocks of Kansas: Geological Society of America Bulletin, v. 6, p. 29-54.


Summary:

Pg. 38-39. Cottonwood shales. Yellow fossiliferous shales, 10 feet thick, forming upper part of Cottonwood formation in Cottonwood Valley, [Chase and Lyon Counties], and at Manhattan and vicinity, [Riley County], eastern KS. Overlies Manhattan stone or Cottonwood limestone. Age is Permian.

Source: US geologic names lexicon (USGS Bull. 896, p. 530).


Map showing publication footprint
  • Usage in publication:
    • Cottonwood shales†
  • Modifications:
    • Abandoned
  • AAPG geologic province:
    • Nemaha anticline
    • Forest City basin
Publication:

Wilmarth, M.G., 1930, [Selected Geologic Names Committee remarks (ca. 1930) on Carboniferous and Permian rocks of the Midcontinent], IN Wilmarth, M.G., 1938, Lexicon of geologic names of the United States (including Alaska): U.S. Geological Survey Bulletin, 896, pts. 1-2, 2396 p., See also Wilmarth, M.G., compiler, USGS unpub. corr. charts of Missouri (Mar. 1930); Iowa (Apr. 1930); Texas (Sept. 1930); Oklahoma (Jan. 1931, Feb. 1931); Kansas and Nebraska (Oct. 1936)


Summary:

†Cottonwood shales of Council Grove group. Abandoned. Conflicts with Cottonwood limestone. Replaced with Florena shale member of Garrison formaton.

Source: US geologic names lexicon (USGS Bull. 896, p. 530).


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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