Usage:
East Branch Arkose of Dickinson Group (MI*)
Geologic age:
Late Archean*
Type section, locality, area and/or origin of name:
[Considered type area]: well exposed in broad glacially polished outcrops in secs. 17 and 18, T. 42 N., R. 28 W., along East Branch of Sturgeon River, Dickinson Co., Northern Peninsula, northwestern MI. Named from East Branch (James, 1958).
AAPG geologic province:
Lake Superior region*
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 ([ ]).