Usage:
Moncrief Member of Wasatch Formation (WY*)
Geologic age:
Eocene*
Type section, locality, area and/or origin of name:
North face of Moncrief Ridge, in secs. 34 and 35, T. 54 N., R. 84 W., Sheridan Co., WY. Named from excellent exposures on Moncrief Ridge, Sheridan Co., WY (Sharp, 1948).
AAPG geologic province:
Powder 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 ([ ]).