- Usage in publication:
-
- Rockbound Valley granodiorite
- Modifications:
-
- Named
- Dominant lithology:
-
- Granodiorite
- AAPG geologic province:
-
- Sierra Nevada province
Summary:
Shown on geologic map of Fallen Leaf Lake 15' quad, El Dorado Co, CA. Is exposed over 12 sq mi in northwest corner of quad and extends over similar area to west and north of quad. Consists of relatively fine-grained mafic minerals in hornblende-biotite granodiorite. Intrudes Camper Flat granodiorite and younger diorites and gabbros. Age given as 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 ([ ]).