Usage:
Trego Hot Springs Bed of Pyramid Lake Member of Mount Mazama Formation (CA,NV)
Trego Hot Springs Tephra (OR?)
Geologic age:
Quaternary
Pleistocene
Type section, locality, area and/or origin of name:
Type section: Trego Hot Springs, south of the Western Pacific RR, 200 m west of the intersection of NV Highway 49 and a dirt track on Black Rock Desert, 18 km east of Gerlach, in sec. 3, T. 33 N., R. 25 E., Pershing 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 ([ ]).