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National Geologic Map Database

Geologic Unit: Dewey

Usage:

Dewey Limestone of Skiatook Group (OK*)
Dewey Limestone of Ochelata Group (OK)
Dewey Formation of Kansas City Group (IA)
Dewey Limestone of Kansas City Group (NE?)
Dewey Member of Drum Limestone of Kansas City Group (KS)
Dewey Formation of /Linn subgroup [informal] of Kansas City Group (MO)

["Subgroup" not recognized as a formal stratigraphic rank term (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). Linn subgroup considered informal and should not be capitalized.]


Subunits:

(alphabetical): Cement City Limestone Member (IA,MO) or Cement City Member (NE?), Quivira Shale Member (MO).


Geologic age:

Late Pennsylvanian (Missourian)*


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

Named from the town of Dewey, Washington Co., OK (Ohern, 1910).
Type locality: in old quarry of Dewey Portland Cement Company, near Dewey, in sec. 26, T. 27 N., R. 13 E., Washington Co., OK (Ries, 1954).


AAPG geologic province:

Chautauqua platform*
Forest City basin


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 ([ ]).