Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Mazama Ash  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Quaternary | |
| ....Mazama Ash | |
| RT | Alberta |
| Saskatchewan | |
| Montana | |
| Washington | |
| Oregon | |
| Mount Mazama | |
| SN | Refers to any or all of several Quaternary volcanic ash beds, commonly used as geochronologic markers in Oregon, Washington, Montana, Alberta and Saskatchewan. Erupted from prehistoric Mount Mazama. |