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Geologic Unit: Ingalls
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Map showing publication footprint
  • Usage in publication:
    • Ingalls peridotite
  • Modifications:
    • Original reference
  • Dominant lithology:
    • [Peridotite]
  • AAPG geologic province:
    • Puget Sound province
Publication:

Ellis, R.C., 1959, Geology of the Dutch Miller Gap area, Washington: Dissertation Abstracts, v. 20, no. 3, p. 990., Seattle, WA, Univ. Washington


Summary:

Rocks of Mount Stuart block exposed along east margin of mapped area consist of Hawkins greenstone, Ingalls peridotite (largely serpentinized), and Mount Stuart granodiorite. Age is pre-Tertiary.
Type locality not stated. Derivation of name not stated. Report discusses geology of Dutch Miller Gap area in northwestern WA.

Source: US geologic names lexicon (USGS Bull. 1200, p. 1868).


Map showing publication footprint
  • Usage in publication:
    • Ingalls Tectonic Complex*
Publication:

Tabor, R.W., Frizzell, V.A., Jr., Booth, D.B., Waitt, R.B., Whetten, J.T., and Zartman, R.E., 1993, Geologic map of the Skykomish River 30' x 60' quadrangle, Washington: U.S. Geological Survey Miscellaneous Investigations Series Map, I-1963, 1 sheet, 42 p., scale 1:100,000 [http://ngmdb.usgs.gov/Prodesc/proddesc_10042.htm]


Summary:

Not compiled to date. Publication available online: http://ngmdb.usgs.gov/Prodesc/proddesc_10042.htm
Ingalls Tectonic Complex. Ingalls terrane. Early Cretaceous or Late Jurassic (metamorphic age). Late Jurassic (protolith age).

Source: Publication.


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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