Usage:
Swede Hollow Formation of Cherokee Group (IA)
Subunits:
(alphabetical) --all in IA: Ardmore Limestone Member, Bevier Coal Member, Mulky Coal Member, Oakley Shale Member, Wheeler Coal Member, Whitebreast Coal Member.
Geologic age:
Middle Pennsylvanian (Desmoinesian)
Type section, locality, area and/or origin of name:
In Swede Hollow, in secs. 33 and 34, T. 73 N., R. 22 W., and in sec. 3, T. 72 N., R. 22 W., Lucas Co., IA (Ravn and others, 1984).
AAPG geologic province:
Iowa shelf
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 ([ ]).