Columbus Limestone

The Columbus Limestone is a mapped bedrock unit consisting primarily of fossiliferous limestone. It occurs in Ohio, Pennsylvania, and Virginia in the United States, and in Ontario, Canada.

Columbus Limestone
Stratigraphic range: Devonian
Etched section of hand sample of Columbus Limestone from Kelleys Island
TypeSedimentary
Unit ofOnondaga Group
Sub-unitsBellepoint, Marblehead, Tioga Ash Bed, Venice, Delhi, Klondike, East Liberty
UnderliesBass Islands Formation, Delaware Formation, and Ohio Shale
OverliesLucas Formation
Thickness0 to 105 feet
Lithology
PrimaryLimestone
OtherSandstone
Location
RegionCincinnati Arch of North America
ExtentOhio, Pennsylvania, Virginia, Ontario
Type section
Named forColumbus, Ohio
Named byMathur, 1859
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