Usage:
Wayan Formation (ID*)
Subunits:
(alphabetical) --all in ID: Homer Limestone Member*, Smiths Member.
Geologic age:
Early Cretaceous*
Type section, locality, area and/or origin of name:
Not designated. Named from town of Wayan, Bannock Co., ID (Mansfield and Roundy, 1916).
AAPG geologic province:
Green River basin*
Snake River basin*
Wasatch uplift*
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 ([ ]).