Usage:
Silvies Member of Snowshoe Formation (OR*)
Geologic age:
Jurassic, Middle*
Type section, locality, area and/or origin of name:
Type locality: embraces four quarter-sections surrounding juncture of secs. 21, 22, 27, and 28, T. 16 S., R. 27 E., where Silvies River and a small tributary from west have cut steep-sided well-exposed canyons across strike of unit, east-central OR (Dickinson and Vigrass, 1965).
AAPG geologic province:
Snake 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 ([ ]).