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  • Usage in publication:
    • Cascade Pass Quartz Diorite
  • Modifications:
    • Named
  • Dominant lithology:
    • Quartz diorite
  • AAPG geologic province:
    • Northern Cascade Range-Okanagan province
Publication:

Tabor, R.W., 1962, The crystalline geology of the area south of Cascade Pass, northern Cascades Mountains, Washington: Dissertation Abstracts, v. 22, no. 9, p. 3160.


Summary:

Pg. 3160. Cascade Pass Quartz Diorite. Present in area south of Cascade Pass, northern Cascade Mountains. Three intrusive quartz diorite plutons of probable Tertiary age crop out south of Cascade Pass. The largest, Cascade Pass Quartz Diorite, is a discordant dike-shape body which has been strongly hornfelsed near Cascade River Schist (new) and Eldorado Gneiss (new).

Source: US geologic names lexicon (USGS Bull. 1350, p. 126).


Map showing publication footprint
  • Usage in publication:
    • Cascade Pass Quartz Diorite
  • Modifications:
    • Age modified
  • AAPG geologic province:
    • Northern Cascade Range-Okanagan 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. 103. Age given as Miocene.

Source: US geologic names lexicon (USGS Bull. 1350, p. 126).


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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