Usage:
Tununk Member of Mancos Shale (UT*)
Tununk Shale Member of Frontier Formation (CO*,UT*)
Subunits:
Coon Spring Sandstone Bed (UT*).
Geologic age:
Late Cretaceous (Cenomanian to Turonian)*
Type section, locality, area and/or origin of name:
Described from Tununk Plateau, 6,500 to 7,000 ft elevation (Powell Survey), northwest flank Henry Mountains, central southern UT (Gilbert, 1877).
AAPG geologic province:
Paradox basin*
Uinta uplift*
Uinta basin*
Green River basin*
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 ([ ]).