Amerika Serikat · Stratovolkan
Gunung Adams
Adams
- Tipe
- Stratovolkan
- Ketinggian
- 3742 m
- Letusan terakhir
- 950
- Tipe
- Stratovolkan
- Negara
- Amerika Serikat
- Wilayah
- Amerika Utara / High Cascades Volcanic Arc
- Ketinggian
- 3742 m
- Koordinat
- 46.206, -121.490
- Letusan terakhir
- 950
- Kondisi tektonik
- Zona subduksi / Kerak benua (> 25 km)
- Bentuk lahan
- Komposit
- Batuan utama
- Andesit / Andesit basaltik
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 InggrisMount 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
15 tercatatGlosariumGaris waktu rinci
- 950VEI 2Perkiraan geologi950 – akhir tidak diketahuiEast flank?
- 200VEI 2Perkiraan geologi200 – akhir tidak diketahui
- 300 SMVEI 2Perkiraan geologi300 SM – akhir tidak diketahui
- 400 SMVEI 2Perkiraan geologi400 SM – akhir tidak diketahui
- 550 SM (±1000 tahun)VEI 2Perkiraan geologi550 SM – akhir tidak diketahui
- 1850 SMVEI 1Perkiraan geologi1850 SM – akhir tidak diketahuiSSE flank (2100 m)
- 2650 SM (±300 tahun)VEI 2Perkiraan geologi2650 SM – akhir tidak diketahui
- 2950 SM (±100 tahun)VEI 1Perkiraan geologi2950 SM – akhir tidak diketahuiSSE flank (2600 m)
- 3250 SM (±300 tahun)VEI 2Perkiraan geologi3250 SM – akhir tidak diketahui
- 3550 SMVEI 2Perkiraan geologi3550 SM – akhir tidak diketahui
- 3800 SM (±1950 tahun)VEI 1Perkiraan geologi3800 SM – akhir tidak diketahuiNNE flank (2100-2250 m)
- 4050 SM (±500 tahun)VEI 2Perkiraan geologi4050 SM – akhir tidak diketahuiUpper SW flank?
- 4550 SMVEI 2Perkiraan geologi4550 SM – akhir tidak diketahuiNW flank (2200-2400 m)
- 5150 SM (±500 tahun)VEI 2Perkiraan geologi5150 SM – akhir tidak diketahui
- 7050 SM (±1000 tahun)VEI 2Perkiraan geologi7050 SM – akhir tidak diketahui
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Tautan eksternal
⚠ Untuk referensi saja. Bukan untuk tanggap darurat.