Usage:
Thiensville Formation (WI*)
Geologic age:
late Middle Devonian (Givetian)*
Type section, locality, area and/or origin of name:
Roadcut on Highway 57, 2 mi north of Thiensville, near middle of E/2 sec. 10, T. 9 N., R. 21 E., Ozaukee Co., southeastern WI (Raasch, 1935).
AAPG geologic province:
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 ([ ]).