- Usage in publication:
-
- Keiths Dome quartz monzonite
- Modifications:
-
- Named
- Dominant lithology:
-
- Quartz monzonite
- AAPG geologic province:
-
- Sierra Nevada province
Summary:
Shown on geologic sketch map of Mt. Tallac roof remnant in Fallen Leaf Lake 15' quad, El Dorado Co, CA. Intrudes Triassic(?) and Jurassic metasedimentary and metavolcanic rocks.
Source: GNU records (USGS DDS-6; Menlo GNULEX).
- Usage in publication:
-
- Keiths Dome quartz monzonite
- Modifications:
-
- Age modified
- AAPG geologic province:
-
- Sierra Nevada province
Summary:
Is mafic quartz monzonite because unit has average of 16% dark minerals. Occurs southwest of Fallen Leaf Lake in Fallen Leaf Lake 15' quad, El Dorado Co, CA. Intruded by all adjoining granitic bodies: Glen Alpin granodiorite, Desolation Valley granodiorite, Bryan Meadow granodiorite, and Echo Lake granodiorite. Shown on map of quad as of Cretaceous age.
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 ([ ]).