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National Geologic Map Database

Geologic Unit: Gilmore City

Usage:

Gilmore City Limestone (IA* and subsurface of CO*,KS*,MO*,NE*)
Gilmore City Formation (IA)
Gilmore City Formation of Chouteau Group (MO-subsurface)


Subunits:

(alphabetical) --all in IA: Alden Limestone Member, Humboldt Oolite Member, Iowa Falls Dolomite Member.


Geologic age:

Early Mississippian (Kinderhookian)*


Type section, locality, area and/or origin of name:

Exposed in Gilmore Portland Cement Company's quarry, 1.5 mi northwest of Gilmore City, Pocahontas Co., IA (Van Tuyl, 1925; Laudon, 1933).


AAPG geologic province:

Iowa shelf*
Forest City basin*
Salina basin*
Anadarko basin*


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).