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National Geologic Map Database

Geologic Unit: Bronson

Usage:

Bronson Group (IA,KS,MO,NE,OK, and CO*-subsurface)
/Bronson subgroup [informal] of Kansas City Group (KS,MO)

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


Subunits:

GROUP STATUS (alphabetical) --all in IA: Dennis Limestone, Galesburg Shale, Hertha Limestone, Ladore Shale, Pleasonton Formation, Swope Limestone.
/SUBGROUP STATUS (alphabetical): Dennis Formation (KS,MO), Galesburg Shale (KS,MO), Hertha Formation (KS,MO), Ladore Shale (KS,MO), Mound Valley Limestone (KS), Swope Formation (KS,MO).


Geologic age:

Late Pennsylvanian (Missourian)


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

Type area: vicinity of Bronson, Bourbon Co., KS (Jewett, 1933).


AAPG geologic province:

Forest City basin
Cherokee 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 ([ ]).