Usage:
Picayune Valley Formation (CA*)
Geologic age:
Devonian, Late*
Mississippian, Early*
Type section, locality, area and/or origin of name:
Picayune Valley, in NE/4 sec. 8, T. 15 N., R. 15 E., Granite Chief 7.5-min quadrangle, [Placer Co., CA] (Harwood, 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 ([ ]).