Usage:
Van Oser Member of Jordan Sandstone (MN*,WI*)
Van Oser Member of Jordan Formation (IA,WI)
Geologic age:
Cambrian, Late*
Ordovician, Early
Type section, locality, area and/or origin of name:
Not stated. Origin of name not stated by authors, but probably named from exposures on Van Oser Creek, Scott Co., MN (Stauffer and others, 1938).
AAPG geologic province:
Sioux uplift*
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 ([ ]).