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National Geologic Map Database

Geologic Unit: Flat Creek

Usage:

No current usage.
(†Flat Creek cyclothem (informal) in Bond Formation of McLeansboro Group (IL) or †Flat Creek cyclothem (informal) in McLeansboro Group (IL) considered obsolete.)


Geologic age:

Pennsylvanian


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

Type locality: center E/2 sec. 24, T. 6 N., R. 6 W., Bond Co., IL (Wanless, 1956).


AAPG geologic province:

Illinois 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 ([ ]).