Usage:
Virginian Ridge Formation of Pasayten Group (WA)
Virginian Ridge Formation (WA)
Subunits:
(alphabetical) --all in WA: Devils Pass Member, Patterson Lake Member, Slate Peak Member.
Geologic age:
late Early to Late Cretaceous
Type section, locality, area and/or origin of name:
Wolf Creek, and along Virginian Ridge between Wolf Creek and Methow River, in secs. 35 and 36, T. 35 N., R. 30 E. [Thompson Ridge 7.5-min quadrangle] Okanogan Co., WA (Barksdale, 1948, 1975).
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 ([ ]).