- Usage in publication:
-
- Aguanga tonalite
- Modifications:
-
- [Areal extent]
- AAPG geologic province:
-
- Salton basin
Summary:
Pg. 9 (table), pl. 1. Aguanga tonalite. Named on map legend in list of Cretaceous plutonics. Occurs below Lake Mountain tonalite and above San Marcos gabbro. Age is Cretaceous.
Source: US geologic names lexicon (USGS Bull. 1200, p. 27-28).
- Usage in publication:
-
- Aguanga tonalite
- Modifications:
-
- Mapped
- Dominant lithology:
-
- Quartz diorite
- AAPG geologic province:
-
- Salton basin
Summary:
Vol. 1, pl. 13B; Vol. 2, p. B-21 (table B-1), B-34. Aguanga tonalite. Mapped in Santa Margarita River watershed. Described as a biotite-rich quartz diorite. In plutonic sequence, occurs below Bonsall tonalite and above San Marcos gabbro. Age is Cretaceous.
[Well exposed on north and south sides of Aguanga Valley and north of Lancaster Valley, Riverside Co., southeastern CA.]
Source: US geologic names lexicon (USGS Bull. 1200, p. 27-28).
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 ([ ]).