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Lascar

Stratovolkan · Chile · 5592 m

Volcán Láscar (right) is the most active volcano of the northern Chilean Andes. A steam plume rises in 1986 from one of six overlapping summit craters capping the andesitic-to-dacitic stratovolcano, which is seen here from Toconao to the NW. Volcán Aguas Calientes (left center), an older, higher stratovolcano 5 km to the east, displays a well-developed summit crater and a probable Holocene lava flow near its summit. Frequent explosive eruptions have been recorded from Láscar since the mid-19th century.
Volcán Láscar (right) is the most active volcano of the northern Chilean Andes. A steam plume rises in 1986 from one of six overlapping summit craters capping the andesitic-to-dacitic stratovolcano, which is seen here from Toconao to the NW. Volcán Aguas Calientes (left center), an older, higher stratovolcano 5 km to the east, displays a well-developed summit crater and a probable Holocene lava flow near its summit. Frequent explosive eruptions have been recorded from Láscar since the mid-19th century. · Foto: Photo by Paul King, MINSAL Corporation, 1986 (courtesy of Peter Francis, Open University). · Wikimedia Commons
Tipe
Stratovolkan
Negara
Chile
Wilayah
Amerika Selatan / Central Andean Volcanic Arc
Ketinggian
5592 m
Koordinat
-23.370, -67.730
Letusan terakhir
2026
Kondisi tektonik
Subduction zone / Continental crust (> 25 km)
Bentuk lahan
Composite
Batuan utama
Andesite / Basaltic Andesite
Ringkasan geologi

Láscar is the most active volcano of the northern Chilean Andes. The andesitic-to-dacitic stratovolcano contains six overlapping summit craters. Prominent lava flows descend its NW flanks. An older, higher stratovolcano 5 km E, Volcán Aguas Calientes, displays a well-developed summit crater and a probable Holocene lava flow near its summit (de Silva and Francis, 1991). Láscar consists of two major edifices; activity began at the eastern volcano and then shifted to the western cone. The largest eruption took place about 26,500 years ago, and following the eruption of the Tumbres scoria flow about 9000 years ago, activity shifted back to the eastern edifice, where three overlapping craters were formed. Frequent small-to-moderate explosive eruptions have been recorded since the mid-19th century, along with periodic larger eruptions that produced ashfall hundreds of kilometers away. The largest historical eruption took place in 1993, producing pyroclastic flows to 8.5 km NW of the summit and ashfall in Buenos Aires.

Ringkasan Wikipedia

Ringkasan Inggris

Lascar is a stratovolcano in Chile within the Central Volcanic Zone of the Andes, a volcanic arc that spans Peru, Bolivia, Argentina and Chile. It is the most active volcano in the region, with records of eruptions going back to 1848. It is composed of two separate cones with several summit craters. The westernmost crater of the eastern cone is presently active. Volcanic activity is characterized by constant release of volcanic gas and occasional vulcanian eruptions.

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Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
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7250 BCE~6941 BCE · 1 letusan · VEI maks. ?5395 BCE~5086 BCE · 1 letusan · VEI maks. 01717~2026 · 36 letusan · VEI maks. 47250 BCE5086 BCE2612 BCE448 BCE1717

Garis waktu rinci

  1. 2026VEI ?Teramati
    2026-02-08 – 2026-02-08
  2. 2022VEI 3Teramati
    2022-12-10 – 2023-02-03
  3. 2015VEI 2Teramati
    2015-10-30 – 2017-04-02
    Summit craters
  4. 2013VEI 1Teramati
    2013-04-02 – 2013-11-20
    Central active crater
  5. 2006VEI 3Teramati
    2006-04-18 – 2007-07-18
  6. 2005VEI 3Teramati
    2005-05-04 – 2005-05-04
  7. 2003VEI 1Perkiraan geologi
    2003-12-09 – 2003-12-09
  8. 2002VEI 2Teramati
    2002-10-26 – 2002-10-27
  9. 2001VEI ?Perkiraan geologi
    2001-05-17 – 2001-07-05
  10. 2000VEI 2Teramati
    2000-07-20 – 2001-01-18
  11. 1996VEI 2Teramati
    1996-10-18 – 1996-10-18
  12. 1994VEI 2Teramati
    1994-07-20 – 1994-07-26
  13. 1994VEI 2Teramati
    1994-11-13 – 1995-07-20
  14. 1993VEI 4Teramati
    1993-01-30 – 1993-08-16
    Western crater of east summit cone
  15. 1993VEI 2Teramati
    1993-12-17 – 1994-02-27
  16. 1991VEI 2Teramati
    1991-10-21 – 1992-05-23
  17. 1990VEI 1Teramati
    1990-11-24 – 1990-11-24
  18. 1987VEI 3Teramati
    1987-11-16 – 1990-04-06
    Western crater of east summit cone
  19. 1986VEI 3Teramati
    1986-09-14 – 1986-09-16
    Western crater of east summit cone
  20. 1984VEI 0Teramati
    1984-12-16 – 1985-07-16
    Western crater of east summit cone
  21. 1974VEI 1Perkiraan geologi
    1974-07-16 – 1974-09-16
  22. 1972VEI 2Perkiraan geologi
    1972-07-02 – Berlangsung
  23. 1969VEI 1Teramati
    1969-05-16 – Berlangsung
  24. 1959VEI 2Teramati
    1959-11-16 – 1968-01-31
  25. 1954VEI 2Teramati
    1954-06-16 – 1954-07-16
  26. 1951VEI 2Teramati
    1951-11-16 – 1952-02-19
    East summit crater
  27. 1940VEI 2Teramati
    1940-07-02 – Berlangsung
  28. 1933VEI 2Teramati
    1933-10-09 – 1933-12-16
  29. 1902VEI 2Teramati
    1902-07-02 – Berlangsung
  30. 1898VEI 2Teramati
    1898-07-02 – 1900-07-02
  31. 1883VEI 2Teramati
    1883-07-02 – 1885-07-02
  32. 1875VEI 2Teramati
    1875-07-02 – Berlangsung
  33. 1858VEI 2Teramati
    1858-04-16 – 1858-12-16
  34. 1854VEI 1Teramati
    1854-01-20 – 1854-01-30
    Lascar or Aguas Calientes
  35. 1853VEI 2Perkiraan geologi
    1853-07-02 – Berlangsung
  36. 1848VEI 2Teramati
    1848-07-02 – Berlangsung
    Lascar or Agua Calientes
  37. 5150 SM (±1250 tahun)VEI 0Perkiraan geologi
    BCE 5150 – Berlangsung
    Eastern crater
  38. 7250 SMVEI ?Perkiraan geologi
    BCE 7250 – Berlangsung
    Lascar II (Tumbres scoria flow)

Tautan eksternal

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