Stati Uniti · Stratovulcano
Yantarni Volcano
Yantarni
- Tipo
- Stratovulcano
- Altitudine
- 1345 m
- Ultima eruzione
- -800
- Tipo
- Stratovulcano
- Paese
- Stati Uniti
- Regione
- Nord America / Alaska Peninsula Volcanic Arc
- Altitudine
- 1345 m
- Coordinate
- 57.019, -157.185
- Ultima eruzione
- -800
- Contesto tettonico
- Zona di subduzione / Crosta continentale (> 25 km)
- Forma vulcanica
- Composito
- Roccia principale
- Andesite / Andesite basaltica
Sintesi geologica
Yantarni is a small andesitic stratovolcano located between Aniakchak caldera and Chiginadak volcanoes that was not discovered until 1979. A large breached crater on the NE side, formed by collapse of the summit about 2000-3500 years ago, contains a lava dome that marks the summit. This eruption, which resembled that of Mount St. Helens in 1980, began with a debris avalanche produced by the edifice collapse that was accompanied by a possible lateral blast and followed by the emplacement of 1 km3 of pyroclastic flows related to growth of the summit lava dome.
Sintesi da Wikipedia
Riassunto in ingleseYantarni Volcano is an andesitic stratovolcano in the U.S. state of Alaska. It is on the Alaska Peninsula, in the Aleutian Range, between Mount Aniakchak and Mount Chiginagak volcanoes. The volcano was not discovered until 1979 due to its remote location, lack of documented historic activity, and its rather modest summit elevation. The mountain was named after nearby Yantarni Bay, which in turn was named by Russian explorers after the abundance of amber in the area.
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Storia delle eruzioni
1 registrateGlossarioCronologia dettagliata
- 800 a.C. (±500 anni)VEI 5Stima geologica800 a.C. – fine sconosciuta
Vulcani nelle vicinanze
Link esterni
⚠ Solo a scopo informativo. Non adatto a situazioni di emergenza.