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National Geologic Map Database
Geologic Unit: Nebraska
Map showing publication footprint
  • Usage in publication:
    • Nebraska beds
  • Modifications:
    • Original reference
  • AAPG geologic province:
    • Denver basin
Publication:

Scott, W.B., 1894, The later Tertiary lacustrine formations of the West: Geological Society of America Bulletin, 6th annual meeting, Boston, MA, December 27-29, 1893, v. 5, p. 594-596.


Summary:

Pg. 594-595. Nebraska or Loup Fork proper. Second or middle horizon of Loup Fork. Covers a vast area from Nebraska to Mexico. Characterized by COSORYX. Underlies Palo Duro horizon and is younger than Deep River horizon of Loup Fork of Montana. [Age is Miocene.]
[Named from State of Nebraska.]

Source: US geologic names lexicon (USGS Bull. 896, p. 1470).


Map showing publication footprint
  • Usage in publication:
    • Nebraska beds†
  • Modifications:
    • Abandoned
  • AAPG geologic province:
    • Denver basin
Publication:

Osborn, H.F., 1909, Cenozoic mammal horizons of western North America, with faunal lists of the Tertiary MAMMALIA of the West by W.D. Matthew: U.S. Geological Survey Bulletin, 361, 138 p.


Summary:

Pg. 65, 79. Assigned these beds to upper Miocene and to lower part of Ogallala formation, and stated (footnote, p. 79): Under misapprehension of Scott's definition of "Nebraska," both Hatcher [Amer. Phil. Soc. Proc., v. 41, p. 117, 1902] and Peterson [Carnegie Mus. Annals, v. 2, p. 473, 1904] first applied this term to part of the lower Arikaree or lower Miocene.

Source: US geologic names lexicon (USGS Bull. 896, p. 1470).


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 ([ ]).