Stati Uniti · Stratovulcano
Fourpeaked Mountain
Fourpeaked
- Tipo
- Stratovulcano
- Altitudine
- 2105 m
- Ultima eruzione
- 2006
- Tipo
- Stratovulcano
- Paese
- Stati Uniti
- Regione
- Nord America / Alaska Peninsula Volcanic Arc
- Altitudine
- 2105 m
- Coordinate
- 58.770, -153.672
- Ultima eruzione
- 2006
- Contesto tettonico
- Zona di subduzione / Crosta continentale (> 25 km)
- Forma vulcanica
- Composito
- Roccia principale
- Andesite / Andesite basaltica
Sintesi geologica
Poorly known Fourpeaked volcano in NE Katmai National Park consists of isolated outcrops surrounded by the Fourpeaked Glacier, which descends eastward almost to the Shelikof Strait. The orientation of andesitic lava flows and extensive hydrothermal alteration of rocks near the present summit suggest that it probably marks the vent area. Eruptive activity during the Holocene had not been confirmed prior to the first historical eruption in September 2006. A N-trending fissure extending 1 km from the summit produced minor ashfall.
Sintesi da Wikipedia
Riassunto in ingleseFourpeaked Mountain, also known as Fourpeaked Volcano, is an active stratovolcano located in the U.S. state of Alaska within Katmai National Park and Preserve. The volcano is nearly completely covered by Fourpeaked Glacier.
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Storia delle eruzioni
1 registrateGlossarioCronologia dettagliata
- 2006VEI 2Osservata2006-09-17 – 2006-09-17Fissure trending N from summit
Vulcani nelle vicinanze
Link esterni
⚠ Solo a scopo informativo. Non adatto a situazioni di emergenza.