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National Geologic Map Database
Geologic Unit: Fairmont
Map showing publication footprint
  • Usage in publication:
    • Fairmont shale member
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Shale
  • AAPG geologic province:
    • Anadarko basin
Publication:

Aurin, F.L., Officer, H.G., and Gould, C.N., 1926, The subdivision of the Enid formation: American Association of Petroleum Geologists Bulletin, v. 10, no. 8, pt. 2, p. 786-799. [Available online, with subscription, from AAPG archives: http://www.aapg.org/datasystems or http://search.datapages.com]


Summary:

Pg. 786-799. Fairmont shale member of Hennessey shale of Enid group. The lower 250 feet of Hennessey shale, consisting largely of deep-red clay shale, not conspicuously laminated, but blocky and breaking with a characteristic conchoidal fracture. Has scattered thin white or greenish bands or streaks, rarely more than a few inches thick. Is composed of alternating hard and soft layers. Underlies Bison banded member of Hennessey shale. [Age is Permian.]
Named from exposures near Fairmont, Garfield Co., central northern OK.

Source: US geologic names lexicon (USGS Bull. 896, p. 714-715).


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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