Usage:
Kibbey Formation of Big Snowy Group (MT*,ND)
Kibbey Sandstone of Big Snowy Group (MT*,ND*)
Kibbey Limestone of Big Snowy Group (ND)
Kibbey Sandstone of Snowcrest Range Group (MT*)
Kibbey Sandstone (SD*)
Subunits:
Ray Member (MT).
Geologic age:
Middle to Late Mississippian (Visean to Namurian; Meramecian to Chesterian)*
Type section, locality, area and/or origin of name:
Named from Kibbey Post Office, Fort Benton region, central MT (US geologic names lexicon, USGS Bull. 1200).
AAPG geologic province:
Central Montana uplift*
Montana folded belt*
Powder River basin*
Sweetgrass arch*
Williston 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 ([ ]).