User:Guanlongwucaii/Mount Hakone
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| Hakone | |
|---|---|
 Lake Ashi, within the caldera. | |
| Highest point | |
| Elevation | 1,438 metres (4,718 ft) |
| Coordinates | 35°13′48″N 139°01′26″E / 35.230°N 139.024°E[1] |
| Geography | |
 | |
| Location | Hakone, Kanagawa, Honshu |
| Geology | |
| Mountain type | Complex calderas |
| Last eruption | 1170 ± 100[2] |
Mount Hakone is a complex volcano that is truncated by two overlapping calderas, the largest of which is 10 × 11 km wide. The calderas were formed as a result of two major explosive eruptions about 180,000 and 49,000–60,000 years ago. Lake Ashi lies between the southwestern caldera wall and a half dozen post-caldera lava domes that arose along a southwest–northeastern trend cutting through the center of the calderas. Dome growth occurred progressively to the south, and the largest and youngest of them, Kami-yama, forms the high point of Hakone. The calderas are breached to the east by the Haya-kawa canyon. Mount Ashigara is a parasitic cone.[1]
The latest magmatic eruptive activity at Hakone occured 2,900 years ago. It produced a pyroclastic flow and a lava dome in the explosion crater, although phreatic eruptions took place as recently as the 12–13th centuries AD.[3]
Notes
[edit]- ^ a b "Hakone". Global Volcanism Program. Smithsonian Institution.
- ^ "Hakone (Eruptive History)". Global Volcanism Program. Smithsonian Institution. Retrieved 2009-6-11.
{{cite web}}: Check date values in:|accessdate=(help) - ^ "Hakone (Eruptive History)". Global Volcanism Program. Smithsonian Institution. Retrieved 2009-6-11.
{{cite web}}: Check date values in:|accessdate=(help)