Lake Bonneville Group (ID*,UT*)
(alphabetical): Alpine Formation (ID*,UT*), Bonneville Formation (UT*), Draper Formation (UT*), Graniteville Soil (UT*), Little Cottonwood Formation (UT*), Midvale Soil (UT*), Provo Formation (ID*,UT*), Ridgeland Formation (UT*).
Quaternary*
Pleistocene*
Holocene*
Not designated. Occurs in northern Utah Valley (Gilbert, 1875).
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 ([ ]).