Usage:
Guilmette Formation (NV*,UT*)
Guilmette Limestone (NV*)
Subunits:
(alphabetical) --all in NV*: Alamo Breccia Member, Indian Ranch Tongue.
Geologic age:
late Middle to Late Devonian (Givetian to Famennian)*
Type section, locality, area and/or origin of name:
Named from exposures in Guilmette Gulch, [western flank Deep Creek Mountains, in T. 9 S., R. 18 W.], in southern part of Gold Hill 15-min quadrangle [1955 ed.], Gold Hill district, Tooele Co., western UT (Nolan, 1930; see also Nolan's USGS Prof. Paper 177, 1935).
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 ([ ]).