Usage:
[/?] Tsoyawata Bed of /Mazama Member of Mount Mazama Formation (NV)
[/?] Tsoyawata Bed (CA)
Geologic age:
Quaternary
Holocene
Type section, locality, area and/or origin of name:
Type section: stream cut on the south side of Long Valley Creek, southwest of U.S. Highway 395, 1.1 km west of the CA-NV State line, in center NE/4 NW/4 sec. 19, T. 21 N., R. 18 E., Loyalton 15-min quadrangle, Sierra Co., CA. Tsoyawata is the Washo Indian word for Long Valley Creek (Davis, 1978).
AAPG geologic province:
Great Basin 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 ([ ]).