Ash/Tephra Fall
Ash/Tephra Fall
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Hazards Summary for Newberry Volcano
Newberry may appear to be a sleeping volcano, but it is doing what volcanoes normally do by maintaining long periods of quiet that are punctuated by occasional eruptions.
Geology and History of Newberry Volcano
Rising gradually southward to 4,000 feet above the City of Bend, Oregon, Newberry Volcano appears from Bend as a broad ridge on the horizon.
Eruption History of Newberry Volcano
Eruption history of Newberry Volcano.
Features of Newberry Caldera
The present 6.5 by 8 km (4 by 5 mi) caldera at Newberry Volcano's summit formed about 75,000 years ago by a major explosive eruption and collapse event.
Ash and Tephra Hazards from Newberry Volcano
Consisting of pumice, rock fragments, and small particles of volcanic glass, tephra is produced by explosive eruptions.
Post-Mazama Eruption Products from <7,700 years ago
Newberry Volcano has seen many eruptions in just the last 7+ millennia.
Big Obsidian Flow
The Big Obsidian Flow is the youngest volcanic feature at Newberry and covers just over 2.6 square kilometers.