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Map showing publication footprint
  • Usage in publication:
    • Oak Creek beds*
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Shale
    • Sandstone
  • AAPG geologic province:
    • Powder River basin
Publication:

Jenney, W.P., 1899, Field observations in the Hay Creek coal field [Crook County, Wyoming], IN Ward, L.F., Jenney, W.P., Fontaine, W.M., and Knowlton, F.H., The Cretaceous formation of the Black Hills [South Dakota and Wyoming] as indicated by the fossil plants, IN Walcott, C.D., Nineteenth annual report of the United States Geological Survey to the Secretary of the Interior, 1897-1898; Part II, Papers chiefly of a theoretic nature: U.S. Geological Survey Annual Report, 19, pt. 2, p. 568-593.


Summary:

Pg. 593, fig. 122, and map. Oak Creek beds. Lower Cretaceous clays and sandstone; upper beds mostly soft clays, clay shales, sandy shales, and soft sandstones, 60 to 120 feet thick; basal 35 to 40 feet consists of massive yellow sandstone, often cross-bedded. Unconformably underlie Dakota sandstone and unconformably overlie Barrett shales in Black Hills. Formerly included in Dakota sandstone (Upper Cretaceous). [Map shows these beds along Oak Creek, Crook Co., northeastern WY.]
[GNC remark (US geologic names lexicon, USGS Bull. 896, p. 1523): According to W.W. Rubey (personal communication, January 1937) the rocks described are Fuson formation and upper part of Lakota sandstone as mapped in USGS Aladdin folio, no. 128, 1905.]

Source: US geologic names lexicon (USGS Bull. 896, p. 1523).


Map showing publication footprint
  • Usage in publication:
    • Oak Creek beds
  • Modifications:
    • Not used
Publication:

Darton, N.H., and O'Harra, C.C., 1905, Description of the Aladdin quadrangle [Wyoming-South Dakota-Montana]: U.S. Geological Survey Geologic Atlas of the United States Folio, Aladdin folio, no. 128, 8 p.


Summary:

Name not used in the area of Hay Creek coal field, Crook Co, WY. Lakota formation and Fuson shale used for rocks at about the same stratigraphic position.

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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