|
Volcano |
Eruption Type(s) |
No.
of Eruptions |
Latest |
Remarks about Activity of the Last 10,000 Years |
| Mount Baker | ash, lava | 1? | mid-1800s, 1870?, 1975 stream emission |
debris avalanches and lahars have flowed down the Nooksack Baker, and Skagit Rivers |
| Glacier Peak | ash | 1+ ? | before 1800 | lahars have extended more than 60 mi (100 km) down the Skagit River; pyroclastic flows produced several times |
| Mount Rainier | ash, lava | 1? | X tephra between 1820-1854 | enormous debris avalanches and lahars flowed down the White, Puyallup, and Nisqually Rivers; smaller lahars in the Cowlitz basin; continued seismic activity |
| Mount St. Helens | ash, lava, dome | 2 major eruptive periods | 1980-present | history of explosive eruptions and lahars |
| Indian Heaven volcanic field | lava, scoria | none | 8,000 years ago? | consists of seven minor shield volcanoes that have each erupted only once (?) |
| Mount Adams | lava, ash | none | 3,500 years ago | lahars |
| Mount Hood, Oregon | ash, dome | 2+ ? | 1865; major eruption in the late 1700s | lahars down the Sandy and Hood Rivers; modern glacial outburst floods; seismic swarms continue. |
| HTML code by Chris
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