Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Trenton Group  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Ordovician | |
| ....Middle Ordovician | |
| .....Trentonian | |
| ......Trenton Group | |
| RT | Virginia |
| Ohio | |
| Pennsylvania | |
| Vermont | |
| New York | |
| Georgia | |
| Michigan | |
| SN | Standard section of group comprises (ascending) Rockland Limestone, Hull Formation, Sherman Fall Formation, Cobourg Formation, Collingwood Shale, and Gloucester Shale. In Georgia, Michigan, N Ohio, New York, Vermont, and W Virginia. |