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Pichincha

Guagua Pichincha

Stratovulcano · Ecuador · 4784 m

An aerial view from the east shows the Pichincha volcanic complex, one of Ecuador's most active volcanoes, rising immediately above the capital city of Quito. Guagua Pichincha (left) and the sharp-topped Pleistocene Rucu Pichincha stratovolcano (right) form a broad volcanic massif overlooking Ecuador's largest city. The largest historical eruption from Guagua Pichincha took place in 1660 CE, when ash fell over a 1000 km radius, accumulating to 30 cm depth in Quito.
An aerial view from the east shows the Pichincha volcanic complex, one of Ecuador's most active volcanoes, rising immediately above the capital city of Quito. Guagua Pichincha (left) and the sharp-topped Pleistocene Rucu Pichincha stratovolcano (right) form a broad volcanic massif overlooking Ecuador's largest city. The largest historical eruption from Guagua Pichincha took place in 1660 CE, when ash fell over a 1000 km radius, accumulating to 30 cm depth in Quito. · Foto: Photo by Patricio Ramon, 2004 (Instituto Geofisca, Escuela Politecnica Nacional). · Wikimedia Commons
Tipo
Stratovulcano
Paese
Ecuador
Regione
South America Volcanic Regions / Northern Andean Volcanic Arc
Altitudine
4784 m
Coordinate
-0.171, -78.598
Ultima eruzione
2002
Contesto tettonico
Subduction zone / Continental crust (> 25 km)
Forma vulcanica
Composite
Roccia principale
Andesite / Basaltic Andesite
Sintesi geologica

Guagua Pichincha and the older Pleistocene Rucu Pichincha stratovolcanoes form a broad volcanic massif that rises immediately W of Ecuador's capital city, Quito. A lava dome grew at the head of a 6-km-wide scarp formed during a late-Pleistocene slope failure ~50,000 years ago. Subsequent late-Pleistocene and Holocene eruptions from the central vent consisted of explosive activity with pyroclastic flows accompanied by periodic growth and destruction of the lava dome. Many minor eruptions have been recorded since the mid-1500's; the largest took place in 1660, when ash fell over a 1,000 km radius and accumulated to 30 cm depth in Quito. Pyroclastic flows and surges also occurred, primarily to then W, and affected agricultural activity.

Sintesi da Wikipedia

Il Pichincha è uno stratovulcano attivo dell'Ecuador, la cui capitale Quito è situata alle sue falde, ad una distanza di 11 km.

Wikipedia · CC BY-SA · Leggi l'articolo completo →

Storia delle eruzioni

Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
7000 BCE~6700 BCE · 1 eruzioni · VEI max. ?6700 BCE~6399 BCE · 2 eruzioni · VEI max. ?6399 BCE~6099 BCE · 2 eruzioni · VEI max. ?4898 BCE~4598 BCE · 1 eruzioni · VEI max. ?3697 BCE~3396 BCE · 1 eruzioni · VEI max. ?2195 BCE~1895 BCE · 1 eruzioni · VEI max. ?1895 BCE~1595 BCE · 1 eruzioni · VEI max. ?1294 BCE~994 BCE · 1 eruzioni · VEI max. ?93 BCE~207 · 1 eruzioni · VEI max. 4508~808 · 1 eruzioni · VEI max. ?808~1108 · 1 eruzioni · VEI max. 51408~1709 · 12 eruzioni · VEI max. 41709~2009 · 19 eruzioni · VEI max. 37000 BCE4898 BCE2495 BCE393 BCE1709

Cronologia dettagliata

  1. 2009VEI 1Stima geologica
    2009-02-16 – 2009-02-17
  2. 2008VEI 1Stima geologica
    2008-02-01 – 2008-02-01
  3. 2003VEI 1Stima geologica
    2003-04-17 – 2003-04-17
  4. 2002VEI 1Osservata
    2002-04-16 – 2002-04-16
  5. 2002VEI 1Osservata
    2002-10-11 – 2002-12-07
  6. 2001VEI 1Osservata
    2001-11-26 – 2001-11-26
    North of 1981 crater
  7. 1998VEI 3Osservata
    1998-08-07 – 2001-05-25
    West and SE of 1981 crater
  8. 1997VEI 1Osservata
    1997-03-16 – 1997-10-18
    1981 crater
  9. 1993VEI 1Osservata
    1993-03-09 – 1993-03-12
    1981 crater
  10. 1990VEI 1Osservata
    1990-04-16 – 1990-05-10
    1981 crater
  11. 1985VEI 1Osservata
    1985-05-16 – 1985-06-16
    1981 crater
  12. 1981VEI 1Osservata
    1981-08-31 – 1982-11-16
    NE side of 1660 lava dome
  13. 1881VEI 2Osservata
    1881-03-10 – In corso
  14. 1869VEI 2Osservata
    1869-03 – In corso
  15. 1869VEI 2Osservata
    1869-07-22 – 1869-08-24
  16. 1868VEI 2Osservata
    1868-03-19 – 1868-03-22
  17. 1868VEI 2Osservata
    1868-08 – In corso
  18. 1831VEI 3Osservata
    1831 – In corso
  19. 1830VEI 2Osservata
    1830 – In corso
  20. 1660VEI 4Osservata
    1660-10-27 – 1660-11-28
  21. 1582VEI 3Osservata
    1582-06-05 – 1598
  22. 1580VEI 2Stima geologica
    1580 – In corso
  23. 1577VEI 2Stima geologica
    1577 – In corso
  24. 1575VEI 2Osservata
    1575-09-08 – In corso
  25. 1566VEI 3Osservata
    1566-10-17 – 1566-11-16
  26. 1560VEI 2Stima geologica
    1560 – In corso
  27. 1539VEI 2Stima geologica
    1539 – In corso
  28. 1538VEI 3Stima geologica
    1538 – In corso
  29. 1535VEI 2Stima geologica
    1535 – In corso
  30. 1534VEI 2Stima geologica
    1534 – In corso
  31. 1533VEI 2Stima geologica
    1533 – In corso
  32. 930 (±100 anni)VEI 5Stima geologica
    930 – In corso
  33. 550 (±75 anni)VEI ?Stima geologica
    550 – In corso
  34. 70 (±75 anni)VEI 4Stima geologica
    70 – In corso
  35. 1230 a.C. (±75 anni)VEI ?Stima geologica
    BCE 1230 – In corso
  36. 1860 a.C. (±100 anni)VEI ?Stima geologica
    BCE 1860 – In corso
  37. 2090 a.C. (±75 anni)VEI ?Stima geologica
    BCE 2090 – In corso
  38. 3500 a.C.VEI ?Stima geologica
    BCE 3500 – In corso
  39. 4850 a.C. (±1350 anni)VEI ?Stima geologica
    BCE 4850 – In corso
  40. 6200 a.C.VEI ?Stima geologica
    BCE 6200 – In corso
  41. 6300 a.C.VEI ?Stima geologica
    BCE 6300 – In corso
  42. 6400 a.C.VEI ?Stima geologica
    BCE 6400 – In corso
  43. 6650 a.C.VEI ?Stima geologica
    BCE 6650 – In corso
  44. 7000 a.C.VEI ?Stima geologica
    BCE 7000 – In corso

Link esterni

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