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Gunung Shasta

Shasta

Stratovolkan · United States · 4317 m

Mount Shasta in northern California, seen here from the SE, is one of the largest of the Cascades volcanoes and is constructed of at least four overlapping edifices. Hotlum cone (forming the summit), along with the Shastina and Black Buttes lava domes, were all constructed during the Holocene.
Mount Shasta in northern California, seen here from the SE, is one of the largest of the Cascades volcanoes and is constructed of at least four overlapping edifices. Hotlum cone (forming the summit), along with the Shastina and Black Buttes lava domes, were all constructed during the Holocene. · Foto: Photo by Lyn Topinka, 1984 (U.S. Geological Survey). · Wikimedia Commons
Tipe
Stratovolkan
Negara
United States
Wilayah
North America Volcanic Regions / High Cascades Volcanic Arc
Ketinggian
4317 m
Koordinat
41.409, -122.193
Letusan terakhir
1250
Kondisi tektonik
Subduction zone / Continental crust (> 25 km)
Bentuk lahan
Composite
Batuan utama
Andesite / Basaltic Andesite
Ringkasan geologi

The most voluminous of the Cascade volcanoes, northern California's Mount Shasta is a massive compound stratovolcano composed of at least four main edifices constructed over a period of at least 590,000 years. An older edifice was destroyed by a large debris avalanche which filled the Shasta River valley to the NW. The Hotlum cone, forming the present summit, the Shastina lava dome complex, and the SW flank Black Butte lava dome, were constructed during the early Holocene. Eruptions from these vents have produced pyroclastic flows and mudflows that affected areas as far as 20 km from the summit. Eruptions from Hotlum cone continued throughout the Holocene.

Ringkasan Wikipedia

Gunung Shasta adalah sebuah gunung berapi yang berpotensi aktif di ujung selatan Pegunungan Cascade di Siskiyou County, California. Pada ketinggian 14.179 kaki, itu adalah puncak tertinggi kedua di Cascades dan tertinggi kelima di negara bagian. Gunung Shasta diperkirakan memiliki volume 85 mil kubik, yang menjadikannya stratovolcano paling produktif di Arc Gunung Berapi Cascade.

Wikipedia · CC BY-SA · Baca artikel lengkap →

Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
8050 BCE~7740 BCE · 2 letusan · VEI maks. ?7740 BCE~7430 BCE · 1 letusan · VEI maks. 47430 BCE~7120 BCE · 3 letusan · VEI maks. 06810 BCE~6500 BCE · 1 letusan · VEI maks. ?6190 BCE~5880 BCE · 1 letusan · VEI maks. ?4330 BCE~4020 BCE · 1 letusan · VEI maks. ?3090 BCE~2780 BCE · 1 letusan · VEI maks. 02780 BCE~2470 BCE · 1 letusan · VEI maks. ?2160 BCE~1850 BCE · 1 letusan · VEI maks. ?1230 BCE~920 BCE · 1 letusan · VEI maks. ?920 BCE~610 BCE · 2 letusan · VEI maks. ?610 BCE~300 BCE · 1 letusan · VEI maks. ?300 BCE~10 · 1 letusan · VEI maks. ?10~320 · 2 letusan · VEI maks. 0630~940 · 1 letusan · VEI maks. ?940~1250 · 2 letusan · VEI maks. ?8050 BCE5880 BCE3400 BCE1230 BCE940

Garis waktu rinci

  1. 1250VEI ?Perkiraan geologi
    1250 – Berlangsung
  2. 1200VEI ?Perkiraan geologi
    1200 – Berlangsung
  3. 850VEI ?Perkiraan geologi
    850 – Berlangsung
  4. 150VEI ?Perkiraan geologi
    150 – Berlangsung
  5. 50VEI 0Perkiraan geologi
    50 – Berlangsung
  6. 150 SMVEI ?Perkiraan geologi
    BCE 150 – Berlangsung
  7. 550 SM (±500 tahun)VEI ?Perkiraan geologi
    BCE 550 – Berlangsung
  8. 650 SM (±800 tahun)VEI ?Perkiraan geologi
    BCE 650 – Berlangsung
  9. 850 SMVEI ?Perkiraan geologi
    BCE 850 – Berlangsung
  10. 1150 SMVEI ?Perkiraan geologi
    BCE 1150 – Berlangsung
  11. 2050 SMVEI ?Perkiraan geologi
    BCE 2050 – Berlangsung
  12. 2550 SMVEI ?Perkiraan geologi
    BCE 2550 – Berlangsung
  13. 3050 SM (±1000 tahun)VEI 0Perkiraan geologi
    BCE 3050 – Berlangsung
  14. 4050 SMVEI ?Perkiraan geologi
    BCE 4050 – Berlangsung
  15. 6050 SMVEI ?Perkiraan geologi
    BCE 6050 – Berlangsung
  16. 6650 SMVEI ?Perkiraan geologi
    BCE 6650 – Berlangsung
  17. 7250 SMVEI ?Perkiraan geologi
    BCE 7250 – Berlangsung
  18. 7350 SMVEI 0Perkiraan geologi
    BCE 7350 – Berlangsung
    Summit, north and west flanks
  19. 7420 SM (±300 tahun)VEI ?Perkiraan geologi
    BCE 7420 – Berlangsung
    Shastina and Black Butte
  20. 7650 SM (±100 tahun)VEI 4Perkiraan geologi
    BCE 7650 – Berlangsung
    Summit, S flank (Red Banks), and Shastina
  21. 7750 SMVEI ?Perkiraan geologi
    BCE 7750 – Berlangsung
  22. 8050 SMVEI ?Perkiraan geologi
    BCE 8050 – Berlangsung

Tautan eksternal

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