Usage:
Bull Lake glaciation (informal)*
Bull Lake Till (CO,ID,MT,UT*WY*)
For informal usage, the rank or lithologic term should not be capitalized.
Geologic age:
Quaternary (Pleistocene)*
Type section, locality, area and/or origin of name:
Named from Bull Lake on the north slope of the Wind River Range, in T. 2 and 3 N., R. 2 and 3 W., Fremont Co., WY (Blackwelder, 1915).
Type area: three end moraines beyond those of the late Wisconsin Pinedale glaciation, north of Bull Lake in the Crowheart Butte and Bull Lake East quadrangles, Fremont Co., WY (Subcommission on North American Quaternary Stratigraphy, 1977).
Principal reference section: on north side of Bull Lake, in SE/4 SE/4 sec. 29, T. 3 N., R. 3 W., Fremont Co., WY (Subcommission on North American Quaternary Stratigraphy, 1977).
AAPG geologic province:
Estancia basin*
San Luis basin*
Wasatch uplift*
Wind River basin*
Yellowstone province*
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 ([ ]).