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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
Mon, 27 Aug
Mon, 27 Aug 11:21 UTCM 0.9 / 7.6 km29 km- Oregon
Sun, 19 Aug
Sun, 19 Aug 10:05 UTCM 0.1 / 1.5 km2 km- 20km ESE of Three Rivers, Oregon
Fri, 17 Aug
Fri, 17 Aug 03:28 UTCM 0.9 / 11.8 km23 km- 4km ENE of Sunriver, 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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