Usage:
Pyramid Lake Member of Mount Mazama Formation (CA,NV)
Subunits:
(alphabetical): /Leter Ranch Bed (NV), /Pelican Island Bed (NV), Timber Lake Bed (NV), Trego Hot Springs Bed (CA,NV), /Wono Bed (NV).
Geologic age:
Quaternary
Pleistocene
Type section, locality, area and/or origin of name:
Type section: east shore of Pyramid Lake, 500 m southeast of Pyramid Island, in center NE/4 SW/4 sec. 3, T. 24 N., R. 22 E., Washoe Co., NV (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 ([ ]).