Alamagan volcan
Stratovolcano 744 m / 2,441 ft
United States, Mariana Islands, 17.6°N / 145.83°E
Condition actuelle: normal / en sommeil (1 sur 5) | Reports
Alamagan livres
United States, Mariana Islands, 17.6°N / 145.83°E
Condition actuelle: normal / en sommeil (1 sur 5) | Reports
Alamagan livres
Style éruptif tipique: unspecified
Eruptions du volcan Alamagan: 870 AD ± 100 years
Eruptions du volcan Alamagan: 870 AD ± 100 years
| Heure | Mag. / Depth | Distance | Location |
Introduction:
Alamagan is the emergent summit of a large stratovolcano in the central Mariana Islands with a roughly 350-m-deep summit crater east of the center of the island. The exposed cone is largely Holocene in age. A 1.6 x 1 km graben cuts the SW flank. An extensive basaltic-andesite lava flow has extended the northern coast of the island, and a lava platform also occurs on the south flank. Pyroclastic-flow deposits erupted about 1000 years ago have been dated, but reports of historical eruptions were considered invalid (Moore and Trusdell, 1993).---
Smithsonian / GVP volcano information
Derniers images satellite
