Usage:
Sphinx Conglomerate (MT*)
Sphinx Conglomerate of Bozeman Group (MT)
Geologic age:
Late Cretaceous*
Type section, locality, area and/or origin of name:
[Sphinx Mountain (The Sphynx), in T. 8 S., R. 2 E., Lat. 45 deg. 09 min. 26 sec. N., Long. 111 deg. 28 min. 50 sec. W., Sphinx Mountain 15-min quadrangle, Madison Co., Madison Range, central southern MT.] (See Peale, 1896.)
AAPG geologic province:
Montana folded belt*
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 ([ ]).