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{{Short description|American geologic formation}}
{{Infobox rockunit
{{Infobox rockunit
| name = Eau Claire Formation
| name = Eau Claire Formation
| image = Eau Claire Formation (Middle to Upper Cambrian; Warren County core, Ohio, USA) 1.jpg
⚫
| image =
| caption = Eau Claire Formation (Middle to Upper Cambrian; Warren County core, [[Ohio]])
| caption =
| type = [[Formation (stratigraphy)|Formation]]
| type = [[Formation (stratigraphy)|Formation]]
| age = [[Cambrian]]
| age = [[Cambrian]]
⚫
| period = Cambrian
| prilithology = Sandstone
| prilithology = Sandstone
| otherlithology = Siltstone, shale, dolomite
| otherlithology = Siltstone, shale, dolomite
| namedfor = Outcrops along the [[Eau Claire River (Chippewa River)|Eau Claire River]], [[Eau Claire County, Wisconsin]]<ref name=IGS>{{cite web|url=http://igs.indiana.edu/compendium/comp8gis.cfm|title=Eau Claire Formation |publisher=Indiana Geological Survey|accessdate=2015-05-18}}</ref>
| namedfor = Outcrops along the [[Eau Claire River (Chippewa River)|Eau Claire River]], [[Eau Claire County, Wisconsin]]<ref name=IGS>{{cite web|url=http://igs.indiana.edu/compendium/comp8gis.cfm|title=Eau Claire Formation |publisher=Indiana Geological Survey|access-date=2015-05-18}}</ref>
| namedby = E. O. Ulrich
| namedby = E. O. Ulrich
| region = Indiana, Illinois, Wisconsin, Michigan, western Ohio, and western Kentucky. Equivalent to the [[Bonneterre Formation]] in Missouri<ref name=IGS/>
| region = [[Indiana]], [[Illinois]], [[Wisconsin]], [[Michigan]], [[Minnesota]], western [[Ohio]], and western [[Kentucky]]. Equivalent to the [[Bonneterre Formation]] in [[Missouri]]<ref name=IGS/>
| country = United States
| country = United States
| coordinates =
| coordinates =
| unitof =
| unitof = [[Munising Group]]
| subunits =
| subunits =
| underlies = [[Galesville Sandstone]] or [[Potosi Formation|Potosi Dolomite]]
| underlies = [[Davis Formation]], [[Galesville Sandstone]], [[Kerbel Formation]], [[Knox Dolomite]], and [[Potosi Formation|Potosi Dolomite]]
| overlies = [[Mount Simon Sandstone]]
| overlies = [[Mount Simon Sandstone]]
| thickness = 400 to 1000 feet in Indiana<ref name=IGS/>
| thickness = 400 to 1000 feet in Indiana<ref name=IGS/>
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==See also==
==See also==
{{Portal|Paleontology|Cambrian}}
{{Portal|Paleontology}}
* [[List of fossiliferous stratigraphic units in Indiana]]
* [[List of fossiliferous stratigraphic units in Indiana]]


==References==
==References==
{{Reflist}}
{{Reflist}}
⚫
* {{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}}


== Sources ==
* {{cite journal |last1=Aswasereelert |first1=Wasinee |last2=Simo |first2=J.A. (Toni) |last3=LePain |first3=David L. |title=Deposition of the Cambrian Eau Claire Formation, Wisconsin: hydrostratigraphic implications of fine-grained cratonic sandstones |journal=Wisconsin Geological and Natural History Survey |date=2008 |volume=19 |issue=1 |url=https://wgnhs.wisc.edu/pubshare/GS19.pdf}}
⚫
* {{cite web|title= Fossilworks: Gateway to the Paleobiology Database|author= ((Various Contributors to the Paleobiology Database))|url= https://www.fossilworks.org|access-date= 17 December 2021}}


{{Chronostratigraphy of Illinois}}
{{Chronostratigraphy of Indiana}}
{{Chronostratigraphy of Minnesota}}
{{Chronostratigraphy of Ohio}}
{{Chronostratigraphy of Wisconsin}}

[[Category:Cambrian United States]]
[[Category:Dolomite formations]]
[[Category:Cambrian Kentucky]]
[[Category:Cambrian Illinois]]
[[Category:Cambrian Indiana]]
[[Category:Cambrian Indiana]]
[[Category:Cambrian Michigan]]
[[Category:Cambrian Ohio]]
[[Category:Cambrian geology of Wisconsin]]
[[Category:Cambrian System of North America]]
[[Category:Cambrian southern paleotemperate deposits]]
[[Category:Cambrian southern paleotropical deposits]]




{{geologic-formation-stub}}
{{US-geologic-formation-stub}}

Latest revision as of 07:06, 18 November 2024

Eau Claire Formation
Stratigraphic range: Cambrian
Eau Claire Formation (Middle to Upper Cambrian; Warren County core, Ohio)
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

[edit]

References

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

Sources

[edit]


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