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.

Key Information

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
Show more

1. ^ Thompson, Thomas L., 2001, Lexicon of Stratigraphic Nomenclature in Missouri, Missouri Department of Natural Resources, Division of Geology and Land Survey, Report of Investigation Number 73, p 145
2. ^ Winslow, A. (1894). "Lead and zinc deposits, section 1". Geological Survey of Missouri. 6: 331, 373, 375.
3. ^ "Ordovician of the Ozark Plateau". Archived from the original on 2014-07-14. Retrieved 2014-07-11.

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 25 March 2022. Retrieved 17 December 2021.

36°37′30″N 90°49′50″W / 36.62500°N 90.83056°W / 36.62500; -90.83056

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