/Applegate Group (CA*,OR*)
[A "group" consists of 2 or more formations (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021).]
May Creek Formation (OR*) or May Creek Schist (OR*).
Jurassic*
Triassic, Late*
Named from drainage basin of Applegate River [Kerby quadrangle] southwestern OR, where group is prevailing country rock (Wells and others, 1949).
Klamath Mountains province*
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 ([ ]).