Legend
Volcano Map Legend
The sizes of symbols scale with earthquake magnitude, and their color with either the age of the earthquake or its depth, as shown in the legend below, and selected in the Control Panel. Clicking on an earthquake symbol shows its basic information and a link to a page with more details about the individual earthquake.
Control Panel
Volcano Map Panel
Using the tools in this panel you can control the earthquakes shown on the map. The minimum magnitude to plot is selected by the slider. The "Time" and "Depth" determines whether earthquake age or depth are used to color the symbol.
Cross Section
Cross Section
To view events in profile, click "Define X-Section", select two points on the map, drag the box to include events you would like to plot and then click "Plot X-Section." The perspective is looking through the cross section line and into the box.Last 20 Events
| Mag | Time (Local) | Depth (Km) |
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Newberry is one of the largest Quaternary volcanoes in the United States, with a caldera that spans 6 to 8 km across. It is located 32 km SE of Bend, OR.
Construction of the volcano began about 400,000 years ago; since that time it has erupted in a variety of styles ranging from basalt flows to far-reaching explosions of ash. A major explosion and collapse event about 7,500 years ago created Newberry's summit caldera. The volcano contains multiple hot springs, indicating that it is still hydrothermally active. These hot springs and multiple youthful lava flows indicate that the volcano could reawaken at any time.
More background information on Newberry
Background Seismicity
The Cascades Volcano Observatory and the PNSN cooperatively operate 8 seismometers in or near Newberry caldera. On average, we locate 0 earthquakes within 10 km of the volcano each decade.