- Usage in publication:
-
- Uinta group*
- Uinta sandstone*
- Modifications:
-
- Original reference
- Dominant lithology:
-
- Sandstone
- Shale
- AAPG geologic province:
-
- Southern Rocky Mountain region
Summary:
Pg. 41, 42, 61, 70, 138, 189, 141-145. Uinta group (also Uinta sandstone). Massive, thinly bedded sandstones; some intercalated arenaceous shales; all of group is very ferruginous; some portions metamorphosed, becoming a quartzite. Thickness 12,500+ feet. Unconformably overlies Red Creek quartzite (white) and unconformably underlies Lodore group (shales and sandstones). The Uinta Mountains are composed chiefly of this sandstone. About 10,000 feet of it was deposited against the old quartzite headland before it was buried by the upper members of the Uinta group. Provisionally classified as Devonian.
Source: US geologic names lexicon (USGS Bull. 896, p. 2210-2211).
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 ([ ]).