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Gunung Adams

Adams

Stratovolkan · United States · 3742 m

Mount Adams in the Cascade Range is seen here in 1981 from High Knob to the NW. Its base is at a lower elevation than its neighbor Mount Rainier and it has a larger volume. Numerous flank vents surround the volcano and a series of lava flows have erupted on the N, NW, S and E flanks.
Mount Adams in the Cascade Range is seen here in 1981 from High Knob to the NW. Its base is at a lower elevation than its neighbor Mount Rainier and it has a larger volume. Numerous flank vents surround the volcano and a series of lava flows have erupted on the N, NW, S and E flanks. · Foto: Photo by Lee Siebert, 1981 (Smithsonian Institution). · Wikimedia Commons
Tipe
Stratovolkan
Negara
United States
Wilayah
North America Volcanic Regions / High Cascades Volcanic Arc
Ketinggian
3742 m
Koordinat
46.206, -121.490
Letusan terakhir
950
Kondisi tektonik
Subduction zone / Continental crust (> 25 km)
Bentuk lahan
Composite
Batuan utama
Andesite / Basaltic Andesite
Ringkasan geologi

The andesitic-dacitic Mount Adams stratovolcano is second in volume only to Mount Shasta in the Cascade Range. The volcanic complex is elongated along a NNW-SSE line, and includes more than 60 flank vents over 200 km2. Volcanism began about 940 ka, with three main cone-building stages occurring at about 500, 450, and 30 ka. It was active throughout the Holocene, producing two dozen minor explosive eruptions from summit and flank vents. Six Holocene lava flows are located on the flanks between 2,100 and 2,600 m elevation. The most voluminous Holocene lava flows, some of which traveled 10 km or more, were emplaced between about 7,000 and 4,000 years ago. The latest eruption about 1,000 years ago produced a minor tephra layer and possibly a small lava flow down the E flank.

Ringkasan Wikipedia

Ringkasan Inggris

Mount Adams is a stratovolcano located in the Cascade Range of Washington, United States. Standing at 12,276 ft (3,742 m) feet, it is the second-highest mountain in Washington and a prominent feature within the Cascade Volcanic Arc, which formed as a result of the subduction of the Juan de Fuca Plate beneath the North American Plate. Adams is near two more-frequently erupting neighbors, Mount St Helens and Mount Rainier. It has twelve named glaciers descending its slopes.

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Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
7050 BCE~6783 BCE · 1 letusan · VEI maks. 25183 BCE~4917 BCE · 1 letusan · VEI maks. 24650 BCE~4383 BCE · 1 letusan · VEI maks. 24117 BCE~3850 BCE · 1 letusan · VEI maks. 23850 BCE~3583 BCE · 1 letusan · VEI maks. 13583 BCE~3317 BCE · 1 letusan · VEI maks. 23317 BCE~3050 BCE · 1 letusan · VEI maks. 23050 BCE~2783 BCE · 1 letusan · VEI maks. 12783 BCE~2517 BCE · 1 letusan · VEI maks. 21983 BCE~1717 BCE · 1 letusan · VEI maks. 1650 BCE~383 BCE · 2 letusan · VEI maks. 2383 BCE~117 BCE · 1 letusan · VEI maks. 2150~417 · 1 letusan · VEI maks. 2683~950 · 1 letusan · VEI maks. 27050 BCE5183 BCE3050 BCE1183 BCE683

Garis waktu rinci

  1. 950VEI 2Perkiraan geologi
    950 – Berlangsung
    East flank?
  2. 200VEI 2Perkiraan geologi
    200 – Berlangsung
  3. 300 SMVEI 2Perkiraan geologi
    BCE 300 – Berlangsung
  4. 400 SMVEI 2Perkiraan geologi
    BCE 400 – Berlangsung
  5. 550 SM (±1000 tahun)VEI 2Perkiraan geologi
    BCE 550 – Berlangsung
  6. 1850 SMVEI 1Perkiraan geologi
    BCE 1850 – Berlangsung
    SSE flank (2100 m)
  7. 2650 SM (±300 tahun)VEI 2Perkiraan geologi
    BCE 2650 – Berlangsung
  8. 2950 SM (±100 tahun)VEI 1Perkiraan geologi
    BCE 2950 – Berlangsung
    SSE flank (2600 m)
  9. 3250 SM (±300 tahun)VEI 2Perkiraan geologi
    BCE 3250 – Berlangsung
  10. 3550 SMVEI 2Perkiraan geologi
    BCE 3550 – Berlangsung
  11. 3800 SM (±1950 tahun)VEI 1Perkiraan geologi
    BCE 3800 – Berlangsung
    NNE flank (2100-2250 m)
  12. 4050 SM (±500 tahun)VEI 2Perkiraan geologi
    BCE 4050 – Berlangsung
    Upper SW flank?
  13. 4550 SMVEI 2Perkiraan geologi
    BCE 4550 – Berlangsung
    NW flank (2200-2400 m)
  14. 5150 SM (±500 tahun)VEI 2Perkiraan geologi
    BCE 5150 – Berlangsung
  15. 7050 SM (±1000 tahun)VEI 2Perkiraan geologi
    BCE 7050 – Berlangsung

Tautan eksternal

⚠ Untuk referensi saja. Bukan untuk tanggap darurat.