Usage:
Little Tongue Member of Madison Limestone (MT*?,WY*)
Geologic age:
Middle Mississippian (Visean; late Osagean)*
Type section, locality, area and/or origin of name:
Type section: Little Tongue River section, [in NE/4 sec. 27, T. 57 N., R. 87 W., Sheridan Co., WY]. Named from exposures in Little Tongue River, in NW/4 sec. 26, T. 56 N., R. 87 W., Sheridan Co., WY (Sando, 1982).
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 ([ ]).