Usage:
No current usage.
(†Bad Axe Member of Franconia Formation (MN,WI) replaced with Reno Member of Franconia Formation [now member of Lone Rock Formation of Tunnel City Group]. See Reno.)
Geologic age:
Late Cambrian
Type section, locality, area and/or origin of name:
Named from Bad Axe River, near Franconia, Chisago Co., southeastern MN (Trowbridge, 1935).
AAPG geologic province:
Sioux uplift
Wisconsin arch
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 ([ ]).