Usage:
Fine Gold Intrusive Suite (CA*)
Subunits:
(alphabetical) --all in CA*: Bass Lake Tonalite, Knowles Granodiorite, Ward Mountain Trondhjemite.
Informal units: tonalite of Ross Creek; granites of Hogan, Goat and Thornberry Mountains; granodiorite of Arch Rock, Sawmill Mountain and Crane Flat.
Geologic age:
Early Cretaceous*
Type section, locality, area and/or origin of name:
Type area: Ward Mountain-Bass Lake area, central Sierra Nevada [approx. Lat. 37 deg. 00 min. to 38 deg. 00 min. N., Long. 119 deg. 15 min. to 120 deg. 00 min. W., Madera Co., CA] (Bateman, 1992).
AAPG geologic province:
Sierra Nevada province
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 ([ ]).