Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Challis Volcanics  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Tertiary | |
| ....Challis Volcanics | |
| RT | Eocene |
| Oligocene | |
| Miocene | |
| Idaho | |
| SN | S central Idaho. Indexed with ages as applicable. Added to Thesaurus in 1985. |