U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database
Geologic Unit: Stampede
Map showing publication footprint
  • Usage in publication:
    • Stampede Tuff
  • 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. Stampede Tuff of /Keechelus Volcanic Group. Unconformably overlies Eagle Gorge Andesite (new), Huckleberry Mountain (new), and "Naches" Formations. Middle formation of group. Age is late Eocene to 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. 718).


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 ([ ]).

Accessibility FOIA Privacy Policies and Notices

USA Gov U.S. Department of the Interior | U.S. Geological Survey
Supported by the National Cooperative Geologic Mapping Program
Page Contact Information: Personnel
Page Last Modified: Thu 04 Apr 2024 04:37:57 PM MDT