Usage:
Ellemeham Formation (WA*)
Geologic age:
Triassic, Late* or Jurassic*
Type section, locality, area and/or origin of name:
Bluffs about 2 mi south of Ellemeham Draw, northeast of Wannacut Lake, in sec. 1, T. 39 N., R. 26 E., Loomis 15-min quadrangle, northern Okanogan Co., WA. Named from Ellemeham Draw (Rinehart and Fox, 1972).
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 ([ ]).