Reeds Spring Formation

Last updated
Reeds Spring Formation
Stratigraphic range: Mississippian Osagean Series
Type Formation
Underlies Elsey Formation
Overlies Pierson Formation [1]
Lithology
Primary Limestone
Other Shale, chert [2]
Location
Region Southwestern Missouri [2]
Country United States
Type section
Named for Reeds Spring, Stone County, Missouri
Named by Moore in 1928 [1]

The Reeds Spring Formation is a geologic formation in southwestern Missouri. It preserves fossils dating back to the Osagean Series of the Mississippian subperiod.

Missouri State of the United States of America

Missouri is a state in the Midwestern United States. With over six million residents, it is the 18th-most populous state of the Union. The largest urban areas are St. Louis, Kansas City, Springfield, and Columbia; the capital is Jefferson City. The state is the 21st-most extensive in area. In the South are the Ozarks, a forested highland, providing timber, minerals, and recreation. The Missouri River, after which the state is named, flows through the center of the state into the Mississippi River, which makes up Missouri's eastern border.

The Mississippian is a subperiod in the geologic timescale or a subsystem of the geologic record. It is the earliest/lowermost of two subperiods of the Carboniferous period lasting from roughly 358.9 to 323.2 million years ago. As with most other geochronologic units, the rock beds that define the Mississippian are well identified, but the exact start and end dates are uncertain by a few million years. The Mississippian is so named because rocks with this age are exposed in the Mississippi River valley.

See also

Paleontology in Missouri

Paleontology in Missouri refers to paleontological research occurring within or conducted by people from the U.S. state of Missouri. The geologic column of Missouri spans all of geologic history from the Precambrian to present with the exception of the Permian, Triassic, and Jurassic. Brachiopods are probably the most common fossils in Missouri.

Related Research Articles

The Chattanooga Shale is a geologic formation in Alabama, Arkansas, Kentucky, Missouri and Tennessee. It preserves conodont fossils dating to the Devonian Period. It occurs mostly as a subsurface geologic formation composed of layers of shale. It is located in Eastern Tennessee and also extends into southeastern Kentucky, northeastern Georgia, and northern Alabama. This part of Alabama is part of the Black Warrior Basin.

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

The Fort Scott Limestone or Fort Scott Subgroup is a geologic formation in Illinois, Kansas, Missouri, and Oklahoma. It preserves fossils dating back to the Carboniferous period.

The Keokuk Limestone is a geologic formation in Illinois, Iowa and Missouri. It preserves fossils dating back to the Mississippian sub-period.

The Warsaw Formation is a geologic formation in Illinois, Iowa and Missouri. It preserves fossils dating back to the Mississippian subperiod.

The Kimmswick Limestone is an Ordovician geologic formation in Arkansas, Illinois and Missouri. Fossils occurring in the Kimmswick include corals, bryozoans, brachiopods, trilobites, crinoids and mollusks.

Roubidoux Formation

The Roubidoux Formation is a geologic formation in the Ozarks of Missouri and in Virginia. It preserves fossils dating back to the Ordovician period.

The Powell Formation or Powell Dolomite is a geologic formation in northern Arkansas, southeast Missouri and Virginia. It contains gastropod, cephalopod, and trilobite fossils dating back to the Ordovician Period.

The Cotter Formation is a geologic formation in Arkansas, Missouri, Oklahoma and in Virginia. It preserves fossils dating back to the Ordovician period.

The Theodosia Formation is a geologic formation in Missouri. It preserves fossils dating back to the Ordovician period.

The Bonneterre Formation is an Upper Cambrian geologic formation which outcrops in the St. Francois Mountains of the Missouri Ozarks. The Bonneterre is a major host rock for the lead ores of the Missouri Lead Belt.

The Derby-Doerun Dolomite is a Cambrian geologic formation exposed in southeast Missouri. Originally the Derby and Doerun were originally considered separate formations, but now considered a single unit. The combined name is from the Derby Mine and the Doe Run Lead Company of the Old Lead Belt.

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

The Fern Glen Formation is a geologic formation in eastern and southeastern Missouri. It preserves fossils dating back to the Osagean Series of the Mississippian subperiod.

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. It preserves fossils dating back to the Ordovician period.

The Gasconade Formation is a geologic formation in the Ozarks of Missouri. It preserves fossils dating back to the Ordovician Period.

The Bowling Green Dolomite is a geologic formation in Missouri. It preserves fossils dating back to the Silurian period.

The Bryant Knob Formation is a geologic formation in Missouri. It preserves fossils dating back to the Silurian period.

The Northview Formation is a geologic formation in southwest Missouri. Its fauna includes brachiopods and abundant trace fossils of the Mississippian subperiod and Kinderhookian Series.

The Plattin Limestone is a Middle Ordovician geologic formation in Arkansas, Illinois, and Missouri. The name was first introduced in 1904 by Edward Oscar Ulrich in his study of the geology of Missouri. A type locality was designated at the mouth of the Plattin Creek in Jefferson County, Missouri, however a stratotype was not assigned. As of 2017, a reference section has not been designated. The name was introduced into Arkansas in 1927, replacing part of the, now abandoned, Izard Limestone.

References

  1. 1 2 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 237-8
  2. 1 2 Howe, W. B. and J. W. Koenig, The Stratigraphic Section in Missouri, Missouri Geological Survey, 1961, p. 63


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