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Geologic Unit: Morton
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Map showing publication footprint
  • Usage in publication:
    • Morton limestone
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Limestone
  • AAPG geologic province:
    • Nemaha anticline
Publication:

Condra, G.E., and Reed, E.C., 1943, The geological section of Nebraska: Nebraska Geological Survey Bulletin, no. 14, 82 p., Revised 1959


Summary:

Pg. 41-42, 43. Morton limestone formation. Dark-gray to yellowish or brownish locally irregular sandy to conglomeratic fossiliferous limestone. Thickness about 2 feet. First limestone above Dover formation in Nebraska and lies between Minersville shale member of Friedrich formation and what seems to be the Dry shale. Included in Wabaunsee group. Age is Late Pennsylvanian (Virgilian).
Named from outcrops at Morton stockyards in south Table Creek Valley, southwest of Nebraska City, Otoe Co., southeastern NE.

Source: US geologic names lexicon (USGS Bull. 1200, p. 2609).


Map showing publication footprint
  • Usage in publication:
    • Morton limestone
  • Modifications:
    • Areal extent
  • AAPG geologic province:
    • Nemaha anticline
    • Forest City basin
Publication:

Condra, G.E., 1949, The nomenclature, type localities, and correlation of the Pennsylvanian subdivisions in eastern Nebraska and adjacent states: Nebraska Geological Survey Bulletin, no. 16, 67 p.


Summary:

Pg. 14-15. Morton limestone. Geographically extended into southwestern Iowa. Extends from near Thurman, southwestern IA, to northeastern KS but not as far as Kansas River Valley. Age is Late Pennsylvanian (Virgilian).

Source: US geologic names lexicon (USGS Bull. 1200, p. 2609).


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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