Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Grande Ronde Basalt  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Neogene | |
| ....Miocene | |
| .....Grande Ronde Basalt | |
| RT | Idaho |
| Washington | |
| lower Miocene | |
| Oregon | |
| middle Miocene | |
| Hanford Reservation | |
| Picture Gorge Basalt | |
| Columbia River Basalt Group | |
| Yakima Basalt | |
| SN | SE Washington, Oregon and W Idaho. Lower to middle Miocene. Has been considered part of the Yakima Basalt of the Columbia River Basalt Group. Indexed with ages as applicable. Added to Thesaurus in 1985. |