Usage:
Windrow Formation (IA,MN,WI*)
Subunits:
Iron Hill (IA,WI,MN), East Bluff (IA,WI), and Ostrander (MN,IA) Members
Geologic age:
Mesozoic to Cenozoic*
Type section, locality, area and/or origin of name:
Named from exposure on top of Windrow Bluff, near Tomah, Monroe Co., WI (Thwaites and Twenhofel, 1921).
AAPG geologic province:
Wisconsin arch*
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 ([ ]).