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==References==
==References==
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* {{cite web|title= Fossilworks: Gateway to the Paleobiology Database|author= Various Contributors to the Paleobiology Database|url= http://www.fossilworks.org/|accessdate= 22 June 2014|deadurl= yes|archiveurl= https://web.archive.org/web/20140731140924/http://fossilworks.org/|archivedate= 31 July 2014|df= }}
* {{cite web|title= Fossilworks: Gateway to the Paleobiology Database|author= Various Contributors to the Paleobiology Database|url= http://www.fossilworks.org/|accessdate= 22 June 2014|url-status= dead|archiveurl= https://web.archive.org/web/20140731140924/http://fossilworks.org/|archivedate= 31 July 2014}}


{{Chronostratigraphy of Illinois}}
{{Chronostratigraphy of Illinois}}

Revision as of 23:55, 3 October 2019

Eau Claire Formation
Stratigraphic range: Cambrian
TypeFormation
Unit ofMunising Group
UnderliesDavis Formation, Galesville Sandstone, Kerbel Formation, Knox Dolomite, and Potosi Dolomite
OverliesMount Simon Sandstone
Thickness400 to 1000 feet in Indiana[1]
Lithology
PrimarySandstone
OtherSiltstone, shale, dolomite
Location
RegionIndiana, Illinois, Wisconsin, Michigan, Minnesota, western Ohio, and western Kentucky. Equivalent to the Bonneterre Formation in Missouri[1]
CountryUnited States
Type section
Named forOutcrops along the Eau Claire River, Eau Claire County, Wisconsin[1]
Named byE. O. Ulrich

The Eau Claire Formation is a geologic formation in the north central United States. It preserves trilobite fossils from the Cambrian Period.[1]

See also

References

  1. ^ a b c d "Eau Claire Formation". Indiana Geological Survey. Retrieved 2015-05-18.