Mount Dana
Dana
Stratovulcano · United States · 1354 m

- Tipo
- Stratovulcano
- Paese
- United States
- Regione
- Nord America / 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.
Storia delle eruzioni
Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
Cronologia dettagliata
- 1890 a.C.VEI 5Stima geologicaBCE 1890 – In corso
Link esterni
⚠ Solo a scopo informativo. Non adatto a situazioni di emergenza.