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Trenton Formation
Stratigraphic range: Middle-Upper Ordovician
Trenton Formation in Canada
Type	Formation
Sub-units	Dolgeville Limestone Flat Creek Member Kings Falls Limestone Glens Falls Limestone Sugar River Limestone Denley Limestone Steuben Limestone
Underlies	Collingwood Shale, Point Pleasant Formation & Scales Shale
Overlies	Black River & Plattin Formation
Lithology
Primary	Limestone
Other	Chert
Location
Region	Indiana, Michigan, Ohio, and Virginia
Country	United States  Canada
Extent	Appalachia, Midwestern and Southeastern United States

The Trenton Group is a geologic unit in Canada and Michigan, Ohio, New York State and Indiana, Pennsylvania, and West Virginia in the United States. It dates back to the Ordovician period.

See also

• List of fossiliferous stratigraphic units in Michigan
• Trenton Gas Field
• Indiana gas boom
• Petroleum industry in Ohio

References

1. Paleozoic Sedimentary Successions of the Virginia Valley & Ridge and Plateau
2. "Trenton Limestone". Indiana Geological and Water Survey. Indiana University. Retrieved 6 July 2020.
3. Orton, Edward (1889). "THE TRENTON LIMESTONE AS A SOURCE OF PETROLEUM AND INFLAMMABLE GAS IN OHIO AND INDIANA, in Eighth Annual report of the United States Geological Survey to the Secretary of the Interior, 1886-1887: Part 2". USGS. pp. 547–556. Retrieved 6 July 2020.

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 22 June 2014.

v t e Chronostratigraphy of Michigan
Ph	Cz Q Pleistocene indet. Glacial till Mz J indet. Ionia Formation Pz C ⁋ Grand River Formation Saginaw Formation indet. Parma Sandstone M Bayport Limestone Coldwater Shale Marshall Sandstone Sunbury Shale D Upper indet. Antrim Shale Bedford Shale Berea Sandstone Ellsworth Shale Frasnian Squaw Bay Limestone Middle Givetian Squaw Bay Limestone Alpena Limestone Amherstburg Formation Anderdon Limestone Bell Shale Bois Blanc Formation Dundee Limestone Ferron Point Formation Long Lake Limestone Lucas Formation Rockport Quarry Limestone Rogers City Limestone Sylvania Sandstone Thunder Bay Limestone Lower Garden Island Formation S indet. Bertie Formation Byron Formation Bush Bay Formation Cordell Formation Hendricks Formation Lime Island Formation Pointe aux Chenes Formation Put-in-Bay Dolomite Raisin River Dolomite Rapson Creek Formation Rockview Formation Salina Group Schoolcraft Formation St. Ignace Dolomite Llandovery Cabot Head Shale Manitoulin Dolomite O Upper Sandbian Bill's Creek Shale Big Hill Formation Stonington Formation Middle Darriwilian Bill's Creek Shale Black River Formation Collingwood Shale Trenton Formation Lower Au Train Formation Є Munising Formation
pЄ	♇ Copper Harbor Conglomerate Freda Sandstone Jacobsville Sandstone Nonesuch Shale

This article about a specific stratigraphic formation in New York state is a stub. You can help Misplaced Pages by expanding it.

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• Ordovician System of North America
• Ordovician Michigan
• Ordovician geology of New York (state)
• Ordovician geology of Virginia
• Ordovician southern paleotemperate deposits
• Middle Ordovician Series
• New York (state) geologic formation stubs