Usage:
Arroyo Seco Gravel (CA*)
Geologic age:
Quaternary (Pleistocene)*
Type section, locality, area and/or origin of name:
[Type locality: Arroyo Seco Plain, a prominent geographic feature in Arroyo Seco Land Grant, 0.25 mi northeast of Wallace, in SE/4 sec. 15, T. 4 N., R. 9 E., Wallace 7.5-min quadrangle, Calaveras Co., Mokelumne River basin, northern CA.] Named from Arroyo Seco Land Grant [along west front of Sierra Nevada] where formation is extensively preserved (Piper and others, 1939).
AAPG geologic province:
Sacramento 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 ([ ]).