Usage:
Dell Tuff (UT*)
Geologic age:
Tertiary*
Oligocene*
Type section, locality, area and/or origin of name:
The Dell, in secs. 23 and 24, T. 12 S., R. 12 W., Thomas Range, Juab Co., western UT. Named from The Dell (Lindsey, 1979).
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 ([ ]).