Mount Jefferson

Recent Seismicity
Description

Last events

Last 30 days of events

10 km from the summit of Mount Jefferson Show 20 most recent Show 30 days

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*To reduce render time, queries have the following limits.

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CSV	10000
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Analyze

Instructions: Close

Please follow the steps below:

1) To begin, click the "Draw" button
2) Click a point on the map, this will be the left side of the cross-section.
3)Click a second point on the map, this will be the right side of the cross-section.
4) Drag square on line to include events to plot.
- 5) Select plot type.
- 6) Click "Plot"

Plot Type:

X-Section Depth Cumulative # Mag-Time

Recent EQ List

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Mount Jefferson is a stratovolcano, and the second highest peak in Oregon State. It is located 169 km E of Corvallis, OR.

Details regarding eruptive events at Mount Jefferson are poorly known for several reasons. The last major eruption occurred around 7,600 years ago, and since that time the volcano has been covered by large glaciers that have eroded away many deposits. Mount Jefferson has a history that extends back for several hundred thousand years, and it has exhibited a wide range of eruptive styles from highly explosive events to lava flows and lava domes.

More background information on Mount Jefferson

Background Seismicity

The PNSN operates 1 seismometer near Mount Jefferson. On average, we locate 0 earthquakes within 10 km of the volcano per decade.