Usage:
Denny Formation (WA-recognized locally on Denny and Snoqualmie Mountains)
Geologic age:
Permian(?) or Jurassic(?) to Cretaceous
Type section, locality, area and/or origin of name:
Snoqualmie Mountain saddle, central Cascades Mountains. Confined to two small areas on Denny and Snoqualmie Mountains with total extent of less than 2 sq mi, [Snoqualmie National Forest, Snoqualmie Pass 7.5-min quadrangle, King Co., central WA] (Foster, 1960).
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 ([ ]).