Usage:
No current usage.
(†Izee Group (OR) discarded. See Hyde Formation of Mowich Group and Snowshoe Formation.)
Geologic age:
Jurassic, Middle
Type section, locality, area and/or origin of name:
Not stated. Widely exposed along Ochoco anticline from western end of Jurassic rock area northeastward across South Fork Valley and into west side of Bear Valley. Named from Izee Grange and Schoolhouse near South Fork River between Poison Creek and Rosebud Creek, Crook Co., east-central OR (Lupher, 1941).
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 ([ ]).