Usage:
Shawnee Group (IA,KS*,MO*,NE*, and CO*-subsurface)
[?] Shawnee Formation (CO)
Subunits:
GROUP STATUS (alphabetical): Scranton Shale (IA,KS,MO,NE), Tecumseh Formation (MO) or Tecumseh Shale (IA*,KS*,MO*,NE*), Topeka Formation (MO) or Topeka Limestone (IA,KS*,MO*,NE*).
Geologic age:
Late Pennsylvanian (Virgilian)*
Type section, locality, area and/or origin of name:
Not synopsized to date.
AAPG geologic province:
Forest City basin*
Sedgwick basin*
Anadarko basin*
Nemaha anticline*
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 ([ ]).