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Broken Top volcano

stratovolcano 663 m / 2,175 ft
Oregon, USA (mainland exept Alaska), 44.08°N / -121.7°W
Current status: (probably) extinct (0 out of 5) | Reports
Broken Top volcano books
Typical eruption style: Explosive
Broken Top volcano eruptions: unknown, but probably none during the past 10,000 years
TimeMag. / DepthDistanceLocation
Wed, 2 Jan
Wed, 2 Jan 05:10 UTCM 0.3 / 1.8 km13 km- 19km ESE of Sunriver, Oregon
Thu, 13 Dec
Thu, 13 Dec 10:17 UTCM 0.9 / 1.1 km1 km- 22km ESE of Three Rivers, Oregon
Broken Top in the Three Sisters Wilderness, Oregon, is, as the name suggests, the heavily eroded top of a probably extinct stratovolcano.

Background:

The earliest products were basaltic lava flows forming a basal shield. Later stage eruptions built a steeper cone of more silica rich lava flows and pyroclastic deposits.

Broken Top Photos:




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