H T Butte lignite bed (informal) (ND)
Informal. The rank or lithologic term should not be capitalized.
Tertiary
Paleocene, late
Tiffanian
Not designated. Apparently named from H T Butte, a conspicuous landmark in T. 134 N., R. 102 W., Slope Co., ND, that rises about 500 ft above surrounding plain to altitude of 3,414 ft (Hares, 1928).
Williston 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 ([ ]).