The National Geologic Map Database is migrating to a new infrastructure. We apologize for any service disruptions during this process.

U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database
Map showing publication footprint
  • Usage in publication:
    • Spiral Butte Andesite
  • Modifications:
    • Named
  • Dominant lithology:
    • Andesite
  • AAPG geologic province:
    • Cascades province
Publication:

Ellingson, J.A., 1972, The rocks and structure of the White Pass area, Washington: Northwest Science, v. 46, no. 1, p. 9-24.


Summary:

Crops out on both sides of White Pass HWY from summit to 3 mi east of Spiral Butte and on west and northwest of Tumac Plateau, Yakima Co, WA. Consists of dense, light-gray lava with strong linear flow-banding which gives rock characteristic platy rock cleavage. Geologic sketch map and structure section show Spiral Butte Andesite unconformably overlies Russell Ranch Formation. Age given as Quaternary.

Source: GNU records (USGS DDS-6; Menlo GNULEX).


Map showing publication footprint
  • Usage in publication:
    • Spiral Butte Andesite
  • Modifications:
    • Age modified
  • AAPG geologic province:
    • Cascades province
Publication:

Hammond, P.E., Bentley, R.D., Brown, J.C., and Ellingson, J.A., 1977, Volcanic stratigraphy and structure of the southern Cascade Range, Washington; Field trip no. 4, IN Brown, E.H., and Ellis, R.C., eds., Geological excursions in the Pacific northwest: Geological Society of America [Guidebook for Field Trips], [90th] annual meeting, Seattle, WA, November 7-9, 1977, p. 127-169.


Summary:

Described as light-gray, platy, flow-layered hypersthene-hornblende-augite andesite lava flows and minor breccia. Erupted from several vents, the youngest being Spiral Butte. Age given as Pliocene to 10,000(?) yr B.P.

Source: GNU records (USGS DDS-6; Menlo GNULEX).


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 21 May 2026 06:08:25 PM MDT