Mount Dana
Dana
Stratovulcano · United States · 1354 m

- Tipo
- Stratovulcano
- Paese
- United States
- Regione
- North America Volcanic Regions / Aleutian Ridge Volcanic Arc
- Altitudine
- 1354 m
- Coordinate
- 55.641, -161.214
- Ultima eruzione
- -1890
- Contesto tettonico
- Subduction zone / Continental crust (> 25 km)
- Forma vulcanica
- Composite
- Roccia principale
- Andesite / Basaltic Andesite
Sintesi geologica
Mount Dana is a small calc-alkaline volcano NE of Canoe Bay inlet at the head of Pavlof Bay consisting of an apron of volcaniclastic debris surrounding a central dome complex. The high point is located at the north rim of a 1.5 x 2 km crater, whose SW rim exposes Mesozoic sedimentary rocks. Andesitic lava domes occur on the west crater rim and as a small mound east of Knutson Lake inside the crater. Dana is the source of a mid-Holocene block-and-ash flow that reached the sea at Canoe Bay. No historical eruptions are known, but a 200-m-wide tufa mound and several cold springs are located on the SW flank.
Sintesi da Wikipedia
Riassunto in ingleseMount Dana is a small stratovolcano of the Alaska Peninsula, United States, located northeast of Canoe Bay inlet at the head of Pavlof Bay. It was the source for a major eruption about 3840 years ago that produced a pyroclastic flow that filled valleys south and west of the volcano's crater and reached the sea at Canoe Bay.
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Storia delle eruzioni
Cronologia dettagliata
- 1890 a.C.VEI 5Stima geologicaBCE 1890 – In corso
Link esterni
⚠ Solo a scopo informativo. Non adatto a situazioni di emergenza.