Usage:
Waltman Shale Member of Fort Union Formation (WY*)
Geologic age:
Tertiary*
Paleocene*
Type section, locality, area and/or origin of name:
Type section: in S/2 sec. 8 and NE/4 sec. 17, T. 36 N., R. 86 W., Natrona Co., central WY. Named from town in northwest Natrona Co., central WY (Keefer, 1961).
AAPG geologic province:
Wind 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 ([ ]).