Mount Dana
Dana
Stratovolkan · United States · 1354 m

- Tipe
- Stratovolkan
- Negara
- United States
- Wilayah
- Amerika Utara / Aleutian Ridge Volcanic Arc
- Ketinggian
- 1354 m
- Koordinat
- 55.641, -161.214
- Letusan terakhir
- -1890
- Kondisi tektonik
- Subduction zone / Continental crust (> 25 km)
- Bentuk lahan
- Composite
- Batuan utama
- Andesite / Basaltic Andesite
Ringkasan geologi
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.
Riwayat letusan
Ringkasan (VEI dari waktu ke waktu)
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Garis waktu rinci
- 1890 SMVEI 5Perkiraan geologiBCE 1890 – Berlangsung
Tautan eksternal
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