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 conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).