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Map showing publication footprint
  • Usage in publication:
    • Darrington Phyllite
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Phyllite
  • AAPG geologic province:
    • Puget Sound province
Publication:

Misch, Peter, 1966, Tectonic evolution of the Northern Cascades of Washington State, IN Symposium on the tectonic history and mineral deposits of the western Cordillera: Canadian Institute of Mining and Metallurgy Special Publication, v. 8, p. 101-148.


Summary:

Pg. 102, 109, fig. 7-1. Darrington Phyllite. Consists of pelitic and semipelitic, commonly quartz-rich phyllites which in some areas grade into schistose feldspathic metagraywackes. Thickness in order of 10,000 feet. Underlies Shuksan Greenschist. Included in Shuksan Metamorphic Suite. Depositional age of suite not known but presumed to be Paleozoic and may be pre-Middle Devonian.
Darrington is in Snohomish Co., northwestern WA.

Source: US geologic names lexicon (USGS Bull. 1350, p. 194).


Map showing publication footprint
  • Usage in publication:
    • Darrington Phyllite*
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
Darrington Phyllite of Easton Metamorphic Suite. Easton terrane. Early Cretaceous (metamorphic 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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