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National Geologic Map Database

Geologic Unit: Langston

Usage:

Langston Formation (ID*,UT*)
Langston Dolostone (ID*,UT*)


Subunits:

(alphabetical): Naomi Peak Limestone Member (UT), Spence Shale Member (ID,UT).


Geologic age:

Middle Cambrian*


Type section, locality, area and/or origin of name:

[Type locality:] in Blacksmith Fork Canyon, Cache Co., northeastern UT, but strike of beds carries formation into valley of Langston Creek, Bear Co., southeastern ID (Walcott, 1908).
Walcott's Blacksmith Fork section emended: measured on spurs that form sides of lower 0.5 mi of North Cottonwood Canyon on north side of Blacksmith Fork, [in SW/4 sec. 8, T. 10 N., R. 3 E., Porcupine Reservoir 7.5-min quadrangle, Cache Co., northeastern UT] (Deiss, 1938).


AAPG geologic province:

Great Basin province*
Wasatch uplift*


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 ([ ]).