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Map showing publication footprint
  • Usage in publication:
    • Hannegan volcanics
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Volcanics
  • AAPG geologic province:
    • Cascades province
Publication:

Misch, Peter, 1952, Geology of the northern Cascades of Washington: The Mountaineer, v. 45, no. 12, p. 4-22.


Summary:

Pg. 4 (geologic map), 18. The flat-lying Hannegan volcanics are later than any of the folding of the northern Cascades. Age is middle Tertiary.
Prominently exposed around Hannegan Pass, Whatcom Co., northwestern WA.

Source: US geologic names lexicon (USGS Bull. 1200, p. 1664).


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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