Usage:
Thomas Fork Formation (WY*)
Geologic age:
Early Cretaceous*
Type section, locality, area and/or origin of name:
Type section: along north bank of Thomas Fork, from SE/4 NE/4 NW/4 sec. 26 to SW/4 SW/4 NW/4 sec. 25, T. 28 N., R. 119 W., Lincoln Co., southwestern WY (Rubey, 1973).
AAPG geologic province:
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 ([ ]).