Bachelor Vulkan, Oregon (Canada and USA (mainland))

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Bachelor Vulkan

Schichtvulkan 2763 m / 9,065 ft
Oregon, USA (mainland exept Alaska), 43.98°N / -121.69°W
Aktueller Status: nicht aktiv (1 von 5)

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Typische Aktivität: Explosiv
Ausbrüche des Bachelor: 5800 BC ± 1000 (tephrochronology)
Letzte Erdbeben in der Nähe:

Zeit	Mag. / Tiefe	Distance	Ort
Fri, 12 Apr
Fri, 12 Apr 11:06 UTC	M 0.5 / 7.7 km	1 km	20km ESE of Three Rivers, Oregon
Fri, 12 Apr 09:28 UTC	M 1 / 3.8 km	1 km	21km ESE of Three Rivers, Oregon
Fri, 12 Apr 09:28 UTC	M 1.4 / 0.9 km	3 km	19km ESE of Three Rivers, Oregon
Thu, 11 Apr
Thu, 11 Apr 12:01 UTC	M 1.2 / 8.4 km	1 km	20km ESE of Three Rivers, Oregon
Mon, 8 Apr
Mon, 8 Apr 11:20 UTC	M 0.5 / 0.4 km	3 km	19km ESE of Three Rivers, Oregon

Alle anzeigen

Mount Bachelor (formerly known as Bachelor Butte) in central Oregaon is a symmetrical stratovolcano, which is part of a 25 km long volcanic chain SE of South Sister.
The chain is aligned N-S and consists of the main volcano of Mt Bachelor itself, cinder cones, small shield volcanoes, and lava flows. The youngest eruption (dated by comparison with known dates of overlying and underlying layers) occurred about 6000 years ago at the Egan scoria cone on the north flank. It produced a lava flow that overlies (=is younger than) ash from the 6850 year BP eruption of Crater Lake.

Beschreibung:

The young basaltic-andesite and basaltic Mount Bachelor volcanic chain was formed in 4 eruptive phases dating back to only about 18,000-15,000 years ago.
The NNW-SSE chain of cinder cones south of Mount Bachelor had been built by about 12,000 years before present. Mount Bachelor itself is one of the youngest edificies on the chain.

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