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National Geologic Map Database

Geologic Unit: Van Oser

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 ([ ]).