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Gunung berapi Irazú

Irazu

Stratovolkan · Costa Rica · 3436 m

A lake occupies one of the Irazú summit craters (seen here from the southern crater rim in 1996), which has been the source of many recent eruptions. The first well-documented eruption of Irazú occurred in 1723, and frequent explosive eruptions have occurred since. Ashfall from its last major eruption during 1963-65 caused significant disruption to San José and surrounding areas.
A lake occupies one of the Irazú summit craters (seen here from the southern crater rim in 1996), which has been the source of many recent eruptions. The first well-documented eruption of Irazú occurred in 1723, and frequent explosive eruptions have occurred since. Ashfall from its last major eruption during 1963-65 caused significant disruption to San José and surrounding areas. · Foto: Photo by José Enrique Valverde Sanabria, 1996 (courtesy of Eduardo Malavassi, OVSICORI-UNA). · Wikimedia Commons
Tipe
Stratovolkan
Negara
Costa Rica
Wilayah
Middle America-Caribbean Volcanic Regions / Central America Volcanic Arc
Ketinggian
3436 m
Koordinat
9.979, -83.852
Letusan terakhir
1977
Kondisi tektonik
Subduction zone / Continental crust (> 25 km)
Bentuk lahan
Composite
Batuan utama
Andesite / Basaltic Andesite
Ringkasan geologi

The massive Irazú volcano in Costa Rica, immediately E of the capital city of San José, covers an area of 500 km2 and is vegetated to within a few hundred meters of its broad summit crater complex. At least 10 satellitic cones are located on its S flank. No lava effusion is known since the eruption of the Cervantes lava flows from S-flank vents about 14,000 years ago, and all known Holocene eruptions have been explosive. The focus of eruptions at the summit crater complex has migrated to the W towards the main crater, which contains a small lake. The first well-documented eruption occurred in 1723, and frequent explosive eruptions have occurred since. Ashfall from the last major eruption during 1963-65 caused significant disruption to San José and surrounding areas. Phreatic activity reported in 1994 may have been a landslide event from the fumarolic area on the NW summit (Fallas et al., 2018).

Ringkasan Wikipedia

Ringkasan Inggris

The Irazú Volcano is an active volcano in Costa Rica, situated in the Cordillera Central near the city of Cartago.

Wikipedia · CC BY-SA · Baca artikel lengkap →

Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
640 BCE~452 BCE · 1 letusan · VEI maks. 3301~489 · 1 letusan · VEI maks. 3677~865 · 1 letusan · VEI maks. 31053~1241 · 1 letusan · VEI maks. 31430~1618 · 1 letusan · VEI maks. 31618~1806 · 3 letusan · VEI maks. 31806~1994 · 23 letusan · VEI maks. 3640 BCE76 BCE67712411806

Garis waktu rinci

  1. 1994VEI 2Teramati
    1994-12-08 – 1994-12-08
    Upper NW flank
  2. 1977VEI 1Teramati
    1977-03-03 – Berlangsung
  3. 1963VEI 3Teramati
    1963-03-13 – 1965-02-13
  4. 1939VEI 2Teramati
    1939-05-18 – 1940-02
  5. 1933VEI 2Teramati
    1933-03-22 – 1933-07-25
  6. 1930VEI 2Teramati
    1930-10 – Berlangsung
  7. 1928VEI 2Teramati
    1928-02-14 – 1928-05-26
  8. 1924VEI 2Teramati
    1924-03 – 1924-04
  9. 1917VEI 3Teramati
    1917-09-27 – 1921
  10. 1914VEI ?Perkiraan geologi
    1914-02-21 – Berlangsung
  11. 1909VEI 2Perkiraan geologi
    1909 – Berlangsung
  12. 1886VEI 2Teramati
    1886 – Berlangsung
  13. 1885VEI 2Teramati
    1885 – Berlangsung
  14. 1882VEI 2Perkiraan geologi
    1882 – Berlangsung
  15. 1875 (±5 tahun)VEI 2Teramati
    1875 – Berlangsung
  16. 1864VEI 2Teramati
    1864-09-16 – 1864-09-17
  17. 1847VEI 2Teramati
    1847-05-18 – Berlangsung
  18. 1844VEI 2Perkiraan geologi
    1844-05 – Berlangsung
  19. 1842VEI 2Teramati
    1842 – Berlangsung
  20. 1826VEI ?Perkiraan geologi
    1826 – Berlangsung
  21. 1823VEI 2Teramati
    1823 – Berlangsung
  22. 1822VEI 2Teramati
    1822-05-07 – Berlangsung
  23. 1821VEI 2Perkiraan geologi
    1821-05 – Berlangsung
  24. 1775VEI 2Teramati
    1775 – Berlangsung
  25. 1726VEI 2Teramati
    1726-05 – Berlangsung
    Diego de la Haya Crater
  26. 1723VEI 3Teramati
    1723-02-16 – 1724-02
    Diego de la Haya Crater
  27. 1560 (±75 tahun)VEI 3Perkiraan geologi
    1560 – Berlangsung
  28. 1110 (±100 tahun)VEI 3Perkiraan geologi
    1110 – Berlangsung
  29. 690 (±40 tahun)VEI 3Perkiraan geologi
    690 – Berlangsung
  30. 430 (±500 tahun)VEI 3Perkiraan geologi
    430 – Berlangsung
  31. 640 SM (±500 tahun)VEI 3Perkiraan geologi
    BCE 640 – Berlangsung

Tautan eksternal

⚠ Untuk referensi saja. Bukan untuk tanggap darurat.