Trenton Group Explained

Trenton Formation
Type:	Formation
Age:	Middle-Upper Ordovician
Period:	Ordovician
Prilithology:	Limestone
Otherlithology:	Chert
Region:	Indiana, Michigan, Ohio, and Virginia^[1]
Country:
Subunits:	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
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.^{[2] [3]}

See also

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

References

• Web site: Fossilworks: Gateway to the Paleobiology Database. ((Various Contributors to the Paleobiology Database)). 22 June 2014.

Notes and References

1. http://hdl.handle.net/10919/19078 Paleozoic Sedimentary Successions of the Virginia Valley & Ridge and Plateau
2. Web site: Trenton Limestone . Indiana Geological and Water Survey . Indiana University . 6 July 2020.
3. Web site: Orton . Edward . 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 . 6 July 2020 . 547–556 . 1889.