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National Geologic Map Database

Geologic Unit: Green River

Usage:

Green River Formation (CO*,UT*,WY*)


Subunits:

(alphabetical): Angelo Member (WY*), Anvil Points Member (CO*), Black Sulphur Tongue (CO*), Coughs Creek Tongue (CO*), Cow Ridge Member (CO*,UT*), Douglas Creek Member (CO*,UT*), Dry Fork Tongue (CO*), Evacuation Creek Member (CO,UT), Farson Sandstone Member (WY*), Flagstaff Member (UT*), Fontenelle Tongue (WY*), Fossil Butte Member (WY*), Garden Gulch Member (CO*,UT*), Godiva Rim Member (CO*,WY*), Laney Member (CO*,WY*), Luman Tongue (CO*,WY*) or Luman Member (WY), Middle Fork Tongue (UT), Parachute Creek Member (CO*,UT*), Soldier Summit Member (UT), Stewart Gulch Tongue (CO*), Thirteenmile Creek Tongue (CO*), Tipton Tongue (CO*,UT,WY*) or Tipton Shale Member (CO*,WY*), Wilkins Peak Member (CO*,WY*), Yellow Creek Tongue (CO*).


Geologic age:

Tertiary*
Paleocene* (local)
Eocene*


Type section, locality, area and/or origin of name:

Not designated. Origin of name not stated by author, but probably named from exposures along Green River, Sweetwater Co., WY (Hayden, 1869).


AAPG geologic province:

Green River basin*
Piceance basin*
Uinta basin*
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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).