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Olallie Butte volcano

Shield(s) 2199 m / 7215 ft
Oregon, United States, 44.82°N / -121.75°W
Current status: (probably) extinct (0 out of 5) | Reports
Olallie Butte volcano books
Typical eruption style: unspecified
Olallie Butte volcano eruptions: None during the past 10,000 years
Less than few million years ago (Pleistocene) No recent earthquakes
TimeMag. / DepthDistanceLocation

Background:

Ollalie Butte is a basaltic-andesite shield volcano that is older than about 25,000 years before present. North Pinhead cinder cone to the north is even younger, but its flows are glaciated, suggesting an age of >11,000 years (Sherrod, in Wood and Kienle 1990). Sisi Butte, another shield volcano and other cinder cones are located nearby.
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Source: Smithsonian / GVP volcano information


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