Usage:
No current usage.
(†Gordon Mountain Limestone (MT) replaced with Steamboat Limestone. See Steamboat.)
Geologic age:
Middle Cambrian
Type section, locality, area and/or origin of name:
Type locality: middle part of the cliffs which form lower part of east side of a peak 8,300 ft elevation, the top of which is just 1 mi S. 48 deg. E. of top of Pentagon Mountain, [in sec. 14, T. 25. N., R. 12 W., Pentagon Mountain 7.5-min quadrangle, Flathead Co., northwestern MT]. Forms top of central and principal peak of Gordon Mountain, [in sec. 10, T. 19 N., R. 13 W., Pilot Peak 7.5-min quadrangle, Powell Co., northwestern MT] (Deiss, 1933).
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 ([ ]).