The Newberry Volcano in Oregon produced two of the state's largest explosive eruptions in the last 1 million years. These highly explosive VEI 6 eruptions led to the formation of its massive caldera. These powerful eruptions were so large that they distributed a layer of ash throughout all of Oregon and northern California.

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Graphics of eruption dates are courtesy of the Global Volcanism Program, Smithsonian Institute. https://volcano.si.edu/

Google Earth imagery used in this video: ©Google

Thumbnail Photo Credit: ELG21, Pixabay

0:00 Crater Lake Caldera
0:19 How a Caldera Forms
1:25 Newberry Volcano
1:47 VEI 6 Eruptions
2:36 Shield Growth
3:23 Likely Eruption Sequence

Sources:
[1] USGS, Newberry Volcano—Central Oregon’s Sleeping Giant
[2] S. Kuehn & others, Correlation of widespread Holocene and Pleistocene tephra layers from Newberry Volcano, Oregon
[3] Smithsonian Institution, Global Volcanism Program, "Newberry", "Crater Lake"

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