Usage:
Bullpen Member of Wasatch Formation (WY*)
Geologic age:
early to middle Eocene*
Type section, locality, area and/or origin of name:
Type section (partial): in NW/4 sec. 1, T. 20 N., R. 118 W., Lincoln Co., WY. A complete section is on south side of Elk Mountain. Named from exposures that cap bluffs of Green River Formation, south of Bullpen Creek, in southwest part of Kemmerer and southeast part of Sage quadrangles, Lincoln Co., WY (Oriel and Tracey, 1970).
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 ([ ]).