Usage:
Dennis Limestone of Kansas City Group (IA*,KS*,MO*,NE*)
Dennis Limestone of Bronson Group (IA)
Dennis Formation of /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, 2021). Bronson subgroup considered informal and should not be capitalized.]
Subunits:
(alphabetical): Canville Member (IA*,KS*,NE*) or Canville Limestone Member (IA,KS,MO), Stark Shale Member (IA*,KS*,MO,NE*), Winterset Member (IA*,KS,MO*,NE*) or Winterset Limestone Member (IA,KS,MO).
Geologic age:
Late Pennsylvanian (Missourian)*
Type section, locality, area and/or origin of name:
Named from exposures at RR station at Dennis, Labette Co., KS (Adams, 1903).
AAPG geologic province:
Cherokee basin*
Iowa shelf*
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 ([ ]).