Davis Formation

The Davis Formation is a geologic formation in Indiana and Missouri. It preserves fossils dating back to the Cambrian period.

Davis Formation
Stratigraphic range: Upper Cambrian
Ocnerorthis monticola, fossil from the Davis Formation in Missouri
TypeFormation
Unit ofElvins Group (in Missouri)[1] and Munising Group (in Indiana)
UnderliesDerby-Doerun Dolomite and Potosi Dolomite
OverliesBonneterre Formation
Thickness170 ft. average, 225 ft. maximum[2]
Lithology
PrimaryShale, Siltstone
OtherSandstone, dolomite, limestone conglomerate[2]
Location
CountryUnited States
ExtentIllinois, Indiana, Minnesota, and Missouri
Type section
Named forOutcrops along Davis Creek, St. Francois County, Missouri

See also

References

  • Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 31 July 2014. Retrieved 22 June 2014.


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