Usage:
Omak Lake Granodiorite (WA*)
Geologic age:
Cretaceous or Eocene*
Type section, locality, area and/or origin of name:
Roadcuts along west side of Omak Lake Road, about 9 mi south of Omak along west shore of Omak Lake, in sec. 3 and E/2 sec. 4, T. 32 N., R. 27 E., Omak Lake 15-min quadrangle, Okanogan Co., WA (Goodge and Hansen, 1994).
AAPG geologic province:
Northern Cascade Range-Okanagan 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 ([ ]).