Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Chesapeake Group  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...upper Cenozoic | |
| ....Chesapeake Group | |
| RT | Oligocene |
| Pliocene | |
| Pleistocene | |
| Miocene | |
| Virginia | |
| North Carolina | |
| Maryland | |
| Delaware | |
| Calvert Formation | |
| Choptank Formation | |
| Chowan River Formation | |
| Eastover Formation | |
| Saint Marys Formation | |
| Yorktown Formation | |
| SN | Virginia, North Carolina, Delaware and E Maryland. At one time considered, middle and upper Miocene, it ranges from Oligocene to Pleistocene. Indexed with age or ages as applicable. Added to Thesaurus in 1985. |