Trenton Formation | |
---|---|
Stratigraphic range: Middle- Upper Ordovician | |
Type | Formation |
Sub-units |
|
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 [1] |
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. [2] [3]
Trenton Formation | |
---|---|
Stratigraphic range: Middle- Upper Ordovician | |
Type | Formation |
Sub-units |
|
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 [1] |
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. [2] [3]