Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Umpqua Formation  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Paleogene | |
| ....Eocene | |
| .....Umpqua Formation | |
| RT | California |
| Oregon | |
| SN | Lower to middle Eocene. Predominantly medium-grained sandstone with some shaly and conglomerate layers. In N California and SW Oregon. |