Pg. 309. Fenner granite gneiss. Granite gneiss, in part augen. Considered younger than Essex series (new) and older than Kilbeck granite gneiss (new). Age is Precambrian.
Well exposed at Mountain Springs in Piute Mountains, in northern Old Woman Mountains and at Chubbuck, San Bernardino Co., southern CA.
Source: US geologic names lexicon (USGS Bull. 1200, p. 1335-1336).
For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.
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