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

Contents

1 Description

1.1 Depositional environment 1.2 Stratigraphy 1.3 Notable Exposures 1.4 Fossils

2 Age 3 Economic Uses 4 References 5 See also

Description[edit] Depositional environment[edit] The depositional environment was most likely shallow marine. Stratigraphy[edit] The Columbus conformably overlies the Lucas Dolomite
Lucas Dolomite
in northeastern Ohio, and unconformably overlies other dolomite elsewhere. It unconformably underlies the Ohio Shale in northwestern Ohio
Ohio
and the Delaware Limestone
Limestone
in eastern Ohio.[2] Its members include: Bellepoint, Marblehead, Tioga Ash Bed, Venice, Delhi, Klondike, and East Liberty. Notable Exposures[edit]

The type section is located in Columbus, Ohio. The glacial grooves on Kelleys Island are cut into the Columbus Limestone. It is also quarried there. An exposure in Ontario is located at Ingersoll, Ontario.[3]

Fossils[edit] The Columbus Limestone
Limestone
contains brachiopods, trilobites, bryozoans, mollusks, corals, stromatoporoids and echinoderms (including crinoids). Due to their mid-continent depositional environment, the fossils are almost free of deformation caused by tectonic activity common in the Appalachian Mountains. Tabulate corals include Syringopora
Syringopora
tabulata, Favosites
Favosites
hemispherica minuta, Emmonsia polymorpha, Thamnoptychia alternans, Pleurodictyum sp., and Coenites dublinensis. Rugose corals include Prismatophyllum rugosum, Hexagonaria anna, Eridophyllum seriale, Synaptophyllum simcoense, Amplexus yandelli, Zaphrenthis perovalis, Heterophrentis nitida, Cystiphylloides americanum, Odontophyllum convergens, Siphonophrentis gigantea.[4] Brachiopods include Spirifer macrothyris and Brevispirifer gregarius (see Spiriferida). The gastropod (snail) Laevidentalhum martinei is present, as well as the crinoid Nucleocrinus verneulli.[5] Fish fossils have been found in the East Liberty Member ("East Liberty bone bed").[6] Goniatites
Goniatites
have been found in the Columbus, including Werneroceras staufferi and Tornoceras eberlei.[7] Another cephalopod species is Goldringia cyclops. Age[edit] Relative age dating of the Columbus Limestone
Limestone
places it in the Early to Middle Devonian
Devonian
period. Economic Uses[edit] The Columbus has been mined for aggregate. Its Calcium carbonate content is 90% or higher.[8] References[edit]

^ Columbus Limestone, Mineral Resources On-Line Spatial Data, United States Geological Survey https://mrdata.usgs.gov/geology/state/sgmc-unit.php?unit=OHDc%3B0 ^ Ohio
Ohio
Division of Geological Survey, 1990 (rev. 2000, 2004), Generalized Column of Bedrock Units in Ohio; Ohio
Ohio
Department of Natural Resources, Division of Geological Survey, 1p. http://www.dnr.state.oh.us/Portals/10/pdf/stratcol.pdf ^ Ehlers, G. M., and Stumm, E. C., 1951, Middle Devonian
Devonian
Columbus limestone near Ingersoll, Ontario, Canada, AAPG Bulletin; v. 35; no. 8; p. 1879-1888. August. ^ Feldman, R.M.; Hackathorn (1996). Fossils of Ohio. Ohio
Ohio
Division of Geological Survey Bulletin 70. pp. 577 [1].  ^ http://www.fossilprep.com/archive/articles/columbus.htm retrieved 30 Jan 2010 ^ Wells, J.W., 1944, Middle Devonian
Devonian
bone beds of Ohio: Geological Society of America Bulletin, v. 55, no. 3, p. 273-302. ^ Sweet, W. C., and Miller, A. K., 1956, Goniatites
Goniatites
from the Middle Devonian
Devonian
Columbus Limestone
Limestone
of Ohio, Journal of Palaeontology, vol. 30, No. 4, p 811-817. July. ^ GeoFacts No. 25, Ohio
Ohio
Department of Natural Resources, Division of Geological Survey "Archived copy" (PDF). Archived from the original (PDF) on 2011-06-06. Retrieved 2010-01-31. 

See also[edit]

List of types of limestone

v t e

Chronostratigraphy of Ohio

Ph

Pz

P

Cisuralian

Washington Formation

C

ā‹

Allegheny Group Casselman Formation Glenshaw Formation Monongahela Group Pottsville Group

M

Coldwater Shale Cuyahoga Formation Logan Formation Maxville Limestone Rushville Shale Sunbury Shale

D

Upper

Antrim Shale Bedford Shale Berea Sandstone Cussewago Sandstone Java Formation Ohio
Ohio
Shale Olentangy Shale West Falls Formation

Middle

Eifelian

Amherstburg Dolomite Detroit River Group Hillsboro Sandstone

Columbus Limestone Delaware Limestone Dundee Formation Lucas Dolomite Mahantango Formation Marcellus Shale Onondaga Limestone Plumbrook Shale Prout Limestone Silica Formation Tenmile Creek Dolomite

Lower

Emsian

Amherstburg Dolomite Detroit River Group Hillsboro Sandstone

Bass Islands Dolomite Bois Blanc Formation Helderberg Limestone Holland Quarry
Quarry
Shale Oriskany Sandstone Sylvania Sandstone

S

Ludlow

Gorstian

Guelph Dolomite

Greenfield Dolomite Tymochtee Dolomite

Wenlock

Homerian

Guelph Dolomite

Bisher Formation Cedarville Formation Dayton Formation Estill Shale Euphemia Dolomite Gasport Dolomite Goat Island Dolomite Laurel Limestone Lilley Formation Lockport Dolomite Massie Shale Osgood Shale Peebles Dolomite Rochester Shale Springfield Dolomite

Llandovery

Brassfield Formation Cabot Head Shale Clinton Formation Drowning Creek Formation Manitoulin Dolomite

O

Upper

Arnheim Formation Cincinnati Group Drakes Formation Fairview Formation Grant Lake Formation Kope Formation Liberty Formation Miamitown Shale Queenston Shale Saluda Formation Trenton Limestone Waynesville Formation Whitewater Formation

Middle

Black River Group Lexington Limestone Point Pleasant Formation Trenton Limestone Wells Creek Formation

Š„

Furongian

Conasauga Formation Eau Claire Formation Kerbel Formation Knox Dolomite Rome Formation

Mt. Simon Sandstone

pŠ„

ā™‡

Z

Swift Run Formation

Middle R