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Geologic Units: Akins
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  • Usage in publication:
    • Akins shale member*
  • Modifications:
    • Original reference
  • AAPG geologic province:
    • Arkoma basin
Publication:

Taff, J.A., 1905, Description of the Tahlequah quadrangle [Indian Territory-Arkansas]: U.S. Geological Survey Geologic Atlas of the United States Folio, Tahlequah folio, no. 122, 7 p.


Summary:

Akins shale member of Winslow formation. Chiefly blue and black clay shale, with thin sandstones. Thickness 176 feet. Top member of Winslow formation. Age is Pennsylvanian.
[Named from Akins, Sequoyah Co., central eastern OK.]

Source: US geologic names lexicon (USGS Bull. 896, p. 20).


  • Usage in publication:
    • Akins shale member
  • Modifications:
    • Not used
  • AAPG geologic province:
    • Chautauqua platform
Publication:

Wilson, C.W., Jr., 1935, Age and correlation of Pennsylvanian surface formations, and of oil and gas sands of Muskogee County, Oklahoma: American Association of Petroleum Geologists Bulletin, v. 19, no. 4, p. 503-520. [Available online, with subscription, from AAPG archives: http://www.aapg.org/datasystems or http://search.datapages.com]


Summary:

Pg. 503. Akins shale member. The Atoka, Hartshorne, McAlester, and Savanna formations and a part of Boggy shale are directly traceable into Winslow formation as heretofore mapped in Muskogee County, central eastern Oklahoma. [Wilson identified the subdivisions enumerated above and did not use Winslow formation.]

Source: US geologic names lexicon (USGS Bull. 896, p. 20).


  • Usage in publication:
    • Akins shale member
  • Modifications:
    • Not used
  • AAPG geologic province:
    • Chautauqua platform
Publication:

Hendricks, T.A., Dane, C.H., and Knechtel, M.M., 1936, Stratigraphy of Arkansas-Oklahoma coal basin: American Association of Petroleum Geologists Bulletin, v. 20, no. 10, p. 1342-1356. [Available online, with subscription, from AAPG archives: http://www.aapg.org/datasystems or http://search.datapages.com]


Summary:

Pg. 1347. Akins shale member. †Winslow formation is now abandoned. Wilson has recognized in it Atoka, Hartshorne, McAlester, Savanna, and Boggy formations.

Source: US geologic names lexicon (USGS Bull. 896, p. 20).


  • Usage in publication:
    • Akins shale member
  • Modifications:
    • Overview
  • AAPG geologic province:
    • Chautauqua platform
Publication:

Wilmarth, M.G., 1936, [Selected Geologic Names Committee remarks (ca. 1935-1938) 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.


Summary:

Akins shale member. It is still undetermined to which of formations into which †Winslow formation is now divided the Akins shale member belongs. (H.D. Miser, pers. commun., Feb. 1937.)

Source: US geologic names lexicon (USGS Bull. 896, p. 20).


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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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