Usage:
Alkali Canyon Formation of Dalles Group (OR)
Geologic age:
late Tertiary (late Miocene and early? Pliocene)
Type section, locality, area and/or origin of name:
Named from Alkali Canyon, 16 km southwest of Arlington, in T. 2 N., R. 20 and 21 E. (Farooqui and others, 1981).
Reference section: Chem-Security Systems access road, in SE/4 sec. 25, T. 2 N., R. 20 E., Gilliam Co., OR (Farooqui and others, 1981).
AAPG geologic province:
Eastern Columbia 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 ([ ]).