Usage:
No current usage?
(†Stampede Tuff of Keechelus Group (WA) considered abandoned? Uncertain if used by the WA Geol. Survey. Not used by the USGS.)
Geologic age:
Eocene, late to Oligocene, early
Type section, locality, area and/or origin of name:
Not stated. Occurs in west-central Cascade Range, WA. Origin of name not stated (Hammond, 1964).
AAPG geologic province:
Puget Sound 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 ([ ]).