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National Geologic Map Database
Map showing publication footprint
  • Usage in publication:
    • Tule Creek Granite Complex*
  • Modifications:
    • Original reference
  • Dominant lithology:
    • Granite
  • AAPG geologic province:
    • California Coast Ranges province
Publication:

Irwin, W.P., Wolfe, E.W., Blake, M.C., Jr., and Cunningham, C.G., Jr., 1974, Geologic map of the Pickett Peak quadrangle, Trinity County, California: U.S. Geological Survey Geologic Quadrangle Map, GQ-1111, 1 sheet, scale 1:62,500


Summary:

Tule Creek Granite Complex. Dominantly soda granite but includes areas of abundant granitic and quartz-feldspar porphyry dikes in mafic volcanic rocks and may include soda rhyolite. Texture commonly cataclastic, with mineral grains crushed and strained; rocks generally decomposed and poorly exposed. Areas generally characterized by unusually light-colored soil. [Intrudes Rattlesnake Creek terrane of Paleozoic and Triassic(?) age.] Age is Jurassic or older [Jurassic or Triassic].
Named from exposures in the upper reaches of Tule Creek in northeast corner of Pickett Peak quadrangle, Trinity Co., northeastern CA [= type locality].

Source: Publication; supplemental information (in brackets) from US geologic names lexicon (USGS Bull. 1520, p. 316).


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 ([ ]).