Bachelor volcan
stratovolcan 2763 m / 9,065 ft
Oregon, USA (mainland exept Alaska), 43.98°N / -121.69°W
Condition actuelle: normal / en sommeil (1 sur 5) | Reports
Bachelor livres
Oregon, USA (mainland exept Alaska), 43.98°N / -121.69°W
Condition actuelle: normal / en sommeil (1 sur 5) | Reports
Bachelor livres
Style éruptif tipique: Explosive
Eruptions du volcan Bachelor: 5800 BC ± 1000 (tephrochronology)
Eruptions du volcan Bachelor: 5800 BC ± 1000 (tephrochronology)
| Heure | Mag. / Depth | Distance | Location |
| Wed, 13 Feb 2019 | |||
| Wed, 13 Feb 20:05 UTC | M 0.6 / 9 km | 2 km | - 21km SE of Three Rivers, Oregon |
| Wed, 30 Jan 2019 | |||
| Wed, 30 Jan 14:01 UTC | M 0.2 / 1.8 km | 19 km | - 5km SE of Sunriver, Oregon |
| Wed, 2 Jan 2019 | |||
| Wed, 2 Jan 05:10 UTC | M 0.3 / 1.8 km | 13 km | - 19km ESE of Sunriver, Oregon |
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.
Introduction:
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.
Derniers images satellite
