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  • Usage in publication:
    • Snow Creek Formation
  • Modifications:
    • Original reference
  • AAPG geologic province:
    • Puget Sound province[?]
Publication:

Hammond, P.E., 1964, Structure and stratigraphy of the Keechelus Volcanic Group and associated Tertiary rocks in the west-central Cascade Range, Washington: Dissertation Abstracts, v. 24, no. 7, p. 2869., Seattle, WA, Univ. Washington PhD dissert., 264 p., 1963


Summary:

Pg. 2869. Snow Creek Formation of /Keechelus Volcanic Group. Thickness 3,600 to 4,800 feet. Uppermost formation in Keechelus Volcanic Group. Overlies Stampede Tuff (new). Underlies Cougar Mountain Formation (new). Age is early Oligocene.
Occurs in west-central Cascade Range, WA.
[Keechelus Volcanic Group conflicts with nomenclature guidelines stating a group name combines a geographic name with the term "group," and no lithic designation is included (ACSN, 1961, 1970; NACSN, 1983, 2005, 2021).]

Source: US geologic names lexicon (USGS Bull. 1350, p. 704).


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 ([ ]).

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