- Usage in publication:
-
- Mitchell Intrusive Suite*
- Modifications:
-
- Named
- Geochronologic dating
- Dominant lithology:
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- Granodiorite
- AAPG geologic province:
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- Sierra Nevada province
Summary:
Named for exposures in Mitchell Peak area, Triple Divide Peak 15' quad., Fresno and Tulare Cos., CA. Type area is Tableland area, on divide between Kings and Kaweah Rivers, Giant Forest, Triple Divide Peak, and Mount Whitney 15' quads., Tulare Co. Crops out in much of central part of Triple Divide Peak quadrangle and adjacent quadrangles to north and south. Divided into granodiorite of Castle Creek (oldest), granodiorite of Lookout Peak, and Mitchell Peak Granodiorite (new) (youngest). Pb-U age about 91 Ma. Assigned to Cretaceous.
Source: GNU records (USGS DDS-6; Menlo GNULEX).
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 ([ ]).