Jefferson City Formation

The Jefferson City Formation or Jefferson City Dolomite is a geologic formation in the Ozarks of Missouri and Arkansas. The Jefferson City is in part not differentiated from the Cotter Formation of northern Arkansas.^[3] It preserves fossils dating back to the Ordovician period.

Jefferson City Formation
Stratigraphic range: Early Ordovician
Type	Formation
Underlies	Cotter Dolomite
Overlies	Roubidoux Formation[1]
Lithology
Primary	Dolomite
Other	Chert, sandstone
Location
Region	Arkansas, Missouri
Country	United States
Type section
Named for	Jefferson City, Cole County, Missouri[2]
Named by	Arthur Winslow

See also

• Earth sciences portal
• Paleontology portal

• List of fossiliferous stratigraphic units in Missouri
• Paleontology in Missouri