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National Geologic Map Database

Geologic Unit: Mazomanie

Usage:

Mazomanie Formation of Tunnel City Group (MN,WI)
Mazomanie Member of Franconia Formation (MN)
Mazomanie Member of Franconia Sandstone (WI*)
Mazomanie Member of Tunnel City Formation (WI)
Mazomanie Sandstone (WI*)


Geologic age:

Late Cambrian*


Type section, locality, area and/or origin of name:

Type area: at Ferry Bluff, in SW/4 sec. 20, T. 9 N., R. 6 E., Sauk Co., south-central WI, This is a locality mentioned by Ulrich (1920) and is situated across Wisconsin River from town of Mazomanie (Berg, 1954; Clayton and Attig, 1990).


AAPG geologic province:

Wisconsin arch*


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates usage by the U.S. Geological Survey. Other usages by state geological surveys.

"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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).