Usage:
Canyon Springs Sandstone Member of Sundance Formation (CO*,MT,SD*,WY*)
Canyon Springs Sandstone Member of Rierdon Formation of Sundance Group (WY)
Geologic age:
Middle Jurassic (Bathonian to Callovian)*
Type section, locality, area and/or origin of name:
Type section: conical butte about 4 mi west of Horton, near center sec. 23, T. 48 N., R. 62 W., Weston Co., WY. Named from Canyon Springs Prairie, immediately east of type locality (Imlay, 1947).
AAPG geologic province:
Chadron arch*
Denver basin*
Green River basin*
North Park basin*
Powder River 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 ([ ]).