Usage:
Erda Formation of Oquirrh Group (UT*)
Geologic age:
Middle Pennsylvanian (Atokan to Desmoinesian)
Type section, locality, area and/or origin of name:
Type section: west side Kessler Peak, from hill 6231, north across Rogers Canyon and up ridge across center of sec. 31, T. 1 S., R. 3 W., Tooele Co., UT. Named from Erda siding, Union Pacific Railroad, west of mouth of Bates Canyon, Tooele Co., UT (Tooker and Roberts, 1970).
AAPG geologic province:
Great Basin province*
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 ([ ]).