Davis Formation

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Davis Formation
Stratigraphic range: Upper Cambrian
Type Formation
Unit of Elvins Group (in Missouri)[1]
Underlies Derby-Doerun Dolomite
Overlies Bonneterre Formation
Thickness 170 ft. average, 225 ft. maximum[2]
Lithology
Primary Shale, Siltstone
Other Sandstone, dolostone, limestone conglomerate[2]
Location
Region Indiana and Missouri
Country United States
Type section
Named for Outcrops along Davis Creek, St. Francois County, Missouri

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

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