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Calumet Co., Wisconsin, USA
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Calumet County is underlain by Paleozoic (Ordovician to Silurian) sedimentary rocks that strike NE and dip gently to the east, off the Wisconsin Dome. The rocks include dolostones, quartz sandstone and shale. The Silurian dolostone are particularly resistant and form a prominent cuesta (Niagara Escarpment) in the eastern half of the county, which is well shown in Highcliff State Park. The carbonate rocks in the section are frequently quarried. Glacial till and lake deposits cover much of the county.

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Localities in this Region


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Dott, R. H. & J. W. Attig (2004) Roadside Geology of Wisconsin: Mountain Press Publishing Company, 346 p.

External Links

Wisconsin Mineral index - Wisconsin Geological and Natural History Survey http://wgnhs.uwex.edu/wisconsin-geology/minerals-wisconsin/

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Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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