Usage:
No current usage.
(†Rosamond series [informal] (CA) replaced with Tropico Group. See Tropico.)
Geologic age:
Tertiary
Type section, locality, area and/or origin of name:
Type section: near Rosamond Station, [located in NW/4 sec. 21, T. 9 N., R. 12 W., Rosamond 7.5-min quadrangle], Kern Co., southeastern CA (Hershey, 1902).
AAPG geologic province:
Mojave basin
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 ([ ]).