Usage:
Brisbois Formation (OR)
Brisbois Member of Vester Formation (OR*)
Geologic age:
Triassic, Late*
Type section, locality, area and/or origin of name:
Not stated by author. Report discusses Izee area, Grant Co., central OR. Origin of name not stated by author (Dickinson [abs.], 1960).
Exposures along the South Fork of the John Day River between the mouths of Morgan and Dry Soda Creeks (a distance of 3 mi) (Beaulieu, 1972, citing 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 ([ ]).