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National Geologic Map Database

Geologic Unit: Guilmette

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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).