Jeffersonville Limestone Explained

Jeffersonville Limestone
Type:sedimentary
Age:Devonian
Period:Devonian
Prilithology:limestone
Namedfor:Jeffersonville, Indiana
Namedby:Edward M. Kindle, 1899[1]
Region:Cincinnati Arch
Country:United States
Unitof:Muscatatuck Group
Subunits:Dutch Creek Sandstone Member, Geneva Dolomite Member, Vernon Fork Member[2]
Underlies:North Vernon Formation and Sellersburg Limestone
Overlies:Clear Creek Chert and Louisville Limestone
Thickness: at Louisville, KY, 0mto61mm (00feetto200feetm) in southwest Indiana
Extent:Indiana, Kentucky

The Devonian Jeffersonville Limestone is a mapped bedrock unit in Indiana and Kentucky. It is highly fossiliferous. The Vernon Fork Member contains Volcanic ash associated with the Tioga Bentonites.

Description

The Jeffersonville is a coarse grained, dark gray, thick bedded, fossiliferous limestone.[3]

R. D. Perkins (1963) divided the Jeffersonville into five zones based on petrology and fossil content,[4] and these are summarized below (in stratigraphic order):

Fossils

The Jeffersonville Limestone is well known for its fossils, including the well-exposed corals, many in life positions, at Falls of the Ohio.

Edward Kindle described many species from the Falls of the Ohio in 1899:[1]

Conocardium trigonale (?), C. cuneus

Callonema bellatulum, C. imitator, Platyceras dumosum, Platvstoma lineatum, Trochonema rectilatera, Holopea sp., Pleurotomaria sp., Turbo shumardi

Actinopteria boydi, Aviculopecten sp., Glyptodesma occidentale, Macrodon sp. (?), Modiomorpha affinis, M. mytiloides, Ptychodesma sp.

Campbell and Wickwire (1955) listed the following species in the Jeffersonville from outcrops in the vicinity of Hanover, Indiana:[6]

Other trilobites include the following: Arctinurus sp., Anchiopsis anchiops, Anchiopsis tuberculatus, "Calymene" platys, Coronura aspectans, C. myrmecophorus, C. helena, Crassiproteus clareus, C. crassimarginatus, C. macrocephalus, Greenops kindlei, Odontocephalus bifidus, O. magnus, Odontochile pleuroptyx, Phacops nasutus, Phacops pipa, Trypaulites calypso[7] [8] [9]

Ostracods were documented by Kesling and Peterson in 1958.[10] Genera identified include: Abditoloculina, Adelphobolbina, Ctenoloculina, Flaccivelum, Hollina, Hollinella, and Subligaculum.

The Blastoids Codaster alternatus and Codaster pyramidatus, among others, were identified by Cline and Heuer in 1950 at Falls of the Ohio.[11]

Notable exposures

Type locality is at Falls of the Ohio State Park near Louisville, Kentucky.

Age

Relative age dating places the Jeffersonville in the lower to middle Devonian. Devera and Fraunfelter identified it as Emsian-Eifelian based on coral and foraminifera.[2]

See also

External links

Notes and References

  1. Kindle, E.M., 1899, The Devonian and lower Carboniferous faunas of southern Indiana and central Kentucky: Bulletins of American Paleontology, no. 12, 112 p.
  2. Devera, J.A., and Fraunfelter, G.H., 1988, Middle Devonian paleogeography and tectonic relationships east of the Ozark dome, southeastern Missouri, southwestern Illinois and parts of southwestern Indiana and western Kentucky, IN McMillan, N.J., Embry, A.F., and Glass, D.J., eds., Devonian of the World; proceedings of the 2nd international symposium on the Devonian System; Volume II, Sedimentation: Canadian Society of Petroleum Geologists Memoir, 14, p. 179-196.
  3. Butts, Charles, 1915, Geology and mineral resources of Jefferson County, Kentucky: Kentucky Geological Survey [Report], 4th series, v. 3, pt. 2, 270 p.
  4. Ronald D. Perkins, 1963, Petrology of the Jeffersonville Limestone (Middle Devonian) of Southeastern Indiana: Geological Society of America Bulletin (1963), 74(11):1335-1354 abstract
  5. Web site: Archived copy . 2011-06-29 . https://web.archive.org/web/20121021062019/http://www.yale.edu/ypmip/taxon/anthozoa/tabulata/150572.html . 2012-10-21 . dead .
  6. Formations of Ordovician, Silurian, and Devonian Rocks in the vicinity of Hanover, Indiana. Compiled by Guy Campbell and Grant T. Wickwire, 1955 full text
  7. Trilobites at the Falls of the Ohio, Indiana Department of Natural Resources, Division of State Parks and Reservoirs, Interpretive Services (brochure) http://www.fallsoftheohio.org/brochures/trilobites.pdf
  8. Delo, David M., 1940. Phacopid Trilobites of North America. Geological Society of America, Special Paper 29.
  9. Stumm, E. C., 1954. Lower Middle Devonian Phacopid Trilobites from Michigan, Southwestern Ontario, and the Ohio Valley. Contributions from the Museum of Paleontology, Ann Arbor, MI. Vol. XI, pp. 201-221.
  10. Robert V. Kesling and Rex M. Peterson, 1958, Middle Devonian Hollinid Ostracods from the Falls of the Ohio: Micropaleontology. Vol. 4, No. 2 (April 1958), pp. 129-148 https://www.jstor.org/pss/1484299
  11. L. M. Cline and Edward Heuer, 1950, The Codaster alternatus-Codaster pyramidatus Group of Blastoids from the Mid-Devonian of North America: Journal of Paleontology Vol. 24, No. 2 (March 1950), pp. 154-173 https://www.jstor.org/pss/1299499

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