Usage:
Icebox Shale (SD,WY)
Icebox Formation of Winnipeg Group (ND)
Icebox Member of Winnipeg Formation (WY)
Spelled Ice Box in some early reports.
Geologic age:
Late Ordovician (Mohawkian)
Type section, locality, area and/or origin of name:
Type section [=Darton, 1909, section of Deadwood Formation]: about 0.5 mi west of junction of U.S. Highways 14 and 85 [north of Deadwood], in secs. 14 and 23, T. 5 N., R. 3 E., [Deadwood North 7.5-min quadrangle, Lawrence Co.], western SD. Named from Ice Box [Icebox] Gulch [approx. 10 mi southwest of type section] (McCoy, 1952, 1958).
[Icebox Gulch, a tributary of Spearfish Creek, is located east of Cheyenne Crossing, in secs. 22, 23, and 24, T. 4 N., R. 2 E., approx. Lat. 44 deg. 17 min. 54 sec. N., Long. 103 deg. 51 min. 48 sec. W., Lead 7.5-min quadrangle, Lawrence Co., Black Hills National Forest, western SD (USGS GNIS database, USGS historical topographic map collection TopoView).]
AAPG geologic province:
Powder River basin
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 ([ ]).