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Izalco

Stratovolkan · El Salvador · 1950 m

Volcán de Izalco is seen here from the north, on the southern flank of Santa Ana. It began erupting in 1770 CE and frequent Strombolian eruptions produced a steep-sided, 650-m-high stratovolcano over a 200-year period. Izalco was one of the most frequently active volcanoes in Central America, producing ejecta and lava flows from both summit and flank vents.
Volcán de Izalco is seen here from the north, on the southern flank of Santa Ana. It began erupting in 1770 CE and frequent Strombolian eruptions produced a steep-sided, 650-m-high stratovolcano over a 200-year period. Izalco was one of the most frequently active volcanoes in Central America, producing ejecta and lava flows from both summit and flank vents. · Foto: Copyrighted photo by Stephen O'Meara. · Wikimedia Commons
Tipe
Stratovolkan
Negara
El Salvador
Wilayah
Amerika Tengah & Karibia / Central America Volcanic Arc
Ketinggian
1950 m
Koordinat
13.813, -89.633
Letusan terakhir
1966
Kondisi tektonik
Subduction zone / Continental crust (> 25 km)
Bentuk lahan
Composite
Batuan utama
Andesite / Basaltic Andesite
Ringkasan geologi

Volcán de Izalco began growing in 1770 CE on the southern flank of Santa Ana volcano, eventually building a steep 650-m-high stratovolcano truncated by a 250-m-wide summit crater. Frequent Strombolian eruptions during the two centuries prior to the cessation of activity in 1966 provided a night-time beacon for ships, causing it to be known as El Faro, the "Lighthouse of the Pacific." The dominantly basaltic andesite tephra and lava flows are geochemically distinct from those of both Santa Ana and its fissure-controlled flank vents. Lava flows have primarily erupted from flank vents, traveling as far as about 7 km south down the slopes of Santa Ana.

Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
1770~1790 · 3 letusan · VEI maks. 21790~1809 · 4 letusan · VEI maks. 21809~1829 · 2 letusan · VEI maks. 21829~1848 · 4 letusan · VEI maks. 21848~1868 · 10 letusan · VEI maks. 21868~1888 · 13 letusan · VEI maks. 21888~1907 · 5 letusan · VEI maks. 21907~1927 · 4 letusan · VEI maks. 31927~1946 · 6 letusan · VEI maks. 21946~1966 · 2 letusan · VEI maks. 317701809186819071946

Garis waktu rinci

  1. 1966VEI 0Teramati
    1966-10-28 – 1966-11-16
    SSE flank (550 m below summit)
  2. 1948VEI 3Teramati
    1948-11-04 – 1957-12-01
    Summit, SW and NE flanks
  3. 1939VEI 2Teramati
    1939-02-16 – 1948-02-16
    Summit and SSE flank
  4. 1937VEI 2Teramati
    1937-07-02 – 1938-07-02
  5. 1933VEI 2Teramati
    1933-11-30 – 1934-01-12
  6. 1931VEI 2Teramati
    1931-03-31 – Berlangsung
  7. 1930VEI 0Teramati
    1930-04-16 – Berlangsung
    Outer slope of eastern summit crater
  8. 1927VEI 2Teramati
    1927-07-02 – 1928-07-02
  9. 1925VEI 3Teramati
    1925-12-26 – 1927-01-16
  10. 1924VEI 2Teramati
    1924-03-16 – Berlangsung
  11. 1920VEI 2Teramati
    1920-10-29 – 1921-04-10
    SE flank
  12. 1912VEI 2Teramati
    1912-01-16 – 1916-01-26
    Summit and NE flank
  13. 1903VEI 2Teramati
    1903-11-16 – 1905-03-16
    Summit and east flank
  14. 1902VEI 2Teramati
    1902-05-10 – 1902-12-30
    Summit and NE flank
  15. 1899VEI 2Teramati
    1899-12-31 – 1900-03-16
  16. 1891VEI 2Teramati
    1891-07-02 – 1898-07-16
  17. 1890VEI 0Teramati
    1890-03-26 – 1890-04-20
    Summit and upper east flank
  18. 1887VEI 2Teramati
    1887-07-02 – 1889-07-02
  19. 1885VEI 2Teramati
    1885-07-02 – Berlangsung
  20. 1884VEI 2Teramati
    1884-03-09 – 1884-03-10
  21. 1883VEI 2Teramati
    1883-09-05 – 1883-11-13
  22. 1882VEI 2Teramati
    1882-07-12 – Berlangsung
  23. 1881VEI 0Teramati
    1881-01-01 – Berlangsung
  24. 1879VEI 2Teramati
    1879-12-25 – 1880-03-16
  25. 1878VEI ?Teramati
    1878-07-02 – Berlangsung
  26. 1874VEI ?Perkiraan geologi
    1874-07-02 – 1875-07-02
  27. 1872VEI 2Teramati
    1872-12-16 – 1873-03-19
  28. 1870VEI 2Perkiraan geologi
    1870-05-19 – Berlangsung
  29. 1869VEI 2Teramati
    1869-03-01 – 1869-06-18
    Summit and east flank
  30. 1868VEI 2Teramati
    1868-02-16 – 1868-02-17
  31. 1867VEI 2Teramati
    1867-04-16 – 1867-08-16
  32. 1866VEI 2Teramati
    1866-04-27 – 1866-08-15
  33. 1864VEI 2Teramati
    1864-05-15 – 1865-06-15
    Summit and NE flank
  34. 1863VEI 0Teramati
    1863-07-02 – Berlangsung
  35. 1859VEI 0Teramati
    1859-12-08 – 1860-01-22
  36. 1858VEI 2Teramati
    1858-02-06 – 1859-07-16
  37. 1857VEI 2Teramati
    1857-02-15 – 1857-02-19
  38. 1856VEI 2Teramati
    1856-05-24 – 1856-09-01
    Summit and south flank
  39. 1854VEI 2Teramati
    1854-05-13 – 1854-06-08
  40. 1850VEI 2Teramati
    1850-07-02 – Berlangsung
  41. 1844VEI 2Teramati
    1844-06-16 – 1844-10-16
  42. 1842VEI 2Teramati
    1842-07-02 – Berlangsung
  43. 1838VEI 2Teramati
    1838-07-02 – 1840-07-02
  44. 1836VEI 2Teramati
    1836-07-02 – Berlangsung
  45. 1825VEI 2Teramati
    1825-07-02 – Berlangsung
  46. 1817VEI 2Teramati
    1817-07-02 – Berlangsung
  47. 1805VEI 2Teramati
    1805-07-02 – 1807-07-02
  48. 1802VEI 2Teramati
    1802-07-02 – 1803-07-02
  49. 1798VEI 2Teramati
    1798-04 – Berlangsung
  50. 1793VEI 2Teramati
    1793-03-29 – 1793-09
  51. 1783VEI 0Teramati
    1783-07 – Berlangsung
  52. 1772VEI 2Teramati
    1772 – Berlangsung
  53. 1770VEI 2Teramati
    1770-02-23 – Berlangsung

Tautan eksternal

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