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Geologic Unit: Speiser
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Map showing publication footprint
  • Usage in publication:
    • Speiser shale member
  • Modifications:
    • Revised
  • AAPG geologic province:
    • Nemaha anticline
    • Forest City basin
Publication:

Condra, G.E., and Upp, J.E., 1931, Correlation of the Big Blue series in Nebraska: Nebraska Geological Survey Bulletin, 2nd series, no. 6, 74 p., See also "Modern classifications of the Permian rocks of Kansas and Nebraska," compiled by M.G. Wilmarth, Secretary of Committee on Geologic Names, USGS unpub. corr. chart, Oct. 1936, 1 sheet


Summary:

Pg. 23. Speiser shale member of Garrison formation of Council Grove group. Speiser shale of Condra 1927 here divided into (descending) Speiser shale restricted, Funston limestone, and Blue Rapids shale. Thickness of Speiser shale as now constituted increases southward from 18 to 19 feet in Nebraska to 34 or 35 feet in southern Kansas. Age is Permian (Big Blue).
Type locality: in W/2 sec. 35, T. 1 N., R. 13 E., Speiser Twp., Richardson Co., NE. Named from Speiser Twp. Also well exposed 8.5 mi southeast of Randolph, eastern KS.

Source: US geologic names lexicon (USGS Bull. 896, p. 2038-2039); GNC KS-NE Permian Corr. Chart, Oct. 1936.


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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