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Haleakalā

Haleakala

Vulcano a scudo · United States · 3053 m

The summit of Haleakalā on the island of Maui contains a large crater that opens towards the ENE. It formed by the erosion of two large valleys that eventually coalesced, along with collapse events. This view to the NE from near the summit shows the Ko’olau Gap in the distance and scoria cones on the crater floor from eruptions along a major rift zone that extends across the summit from the SW to eastern coasts.
The summit of Haleakalā on the island of Maui contains a large crater that opens towards the ENE. It formed by the erosion of two large valleys that eventually coalesced, along with collapse events. This view to the NE from near the summit shows the Ko’olau Gap in the distance and scoria cones on the crater floor from eruptions along a major rift zone that extends across the summit from the SW to eastern coasts. · Foto: Photo by Dick Stoiber, 1976 (Dartmouth College). · Wikimedia Commons
Tipo
Vulcano a scudo
Paese
United States
Regione
Eastern Pacific Volcanic Regions / Hawaiian-Emperor Hotspot Volcano Group
Altitudine
3053 m
Coordinate
20.710, -156.254
Ultima eruzione
1750
Contesto tettonico
Intraplate / Oceanic crust (< 15 km)
Forma vulcanica
Shield
Roccia principale
Basalt / Picro-Basalt
Sintesi geologica

The massive Haleakala shield volcano forms the eastern portion of the island of Maui. The summit is at the NW end of a volcanic ridge and at the head of a large scarp that opens to the ENE, interrupting the ridge which continues 7 km across the valley, formed as a result of the coalescence of headward erosion of the Koolau and Kaupo valleys. Subsequently the valley has been partially filled by a chain of young cinder cones and lava flows erupted along the rift zone that extends across the basaltic volcano from the SW to the E flanks. The most recent eruption was thought to have occurred between the exploring voyages of La Perouse in 1786 and Vancouver in 1793, but uncertainty surrounds the date of this event, which could have occurred in about 1750 CE (anthropological evidence) or several centuries earlier (radiocarbon dates).

Sintesi da Wikipedia

L'Haleakalā è un vulcano a scudo alto 3 055 metri situato sul lato sud dell'isola di Maui, nell'arcipelago delle Hawaii. Il nome Haleakala deriva da una parola hawaiana che significa "casa del sole", infatti secondo una leggenda hawaiana, il semidio Maui legava il sole da qui per rallentarlo e allungare la giornata.

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
7950 BCE~7627 BCE · 1 eruzioni · VEI max. ?7627 BCE~7303 BCE · 2 eruzioni · VEI max. ?7303 BCE~6980 BCE · 1 eruzioni · VEI max. ?6980 BCE~6657 BCE · 2 eruzioni · VEI max. ?6333 BCE~6010 BCE · 2 eruzioni · VEI max. ?6010 BCE~5687 BCE · 1 eruzioni · VEI max. ?5040 BCE~4717 BCE · 1 eruzioni · VEI max. ?3100 BCE~2777 BCE · 1 eruzioni · VEI max. ?2777 BCE~2453 BCE · 2 eruzioni · VEI max. ?2453 BCE~2130 BCE · 2 eruzioni · VEI max. ?2130 BCE~1807 BCE · 4 eruzioni · VEI max. ?1807 BCE~1483 BCE · 1 eruzioni · VEI max. ?1483 BCE~1160 BCE · 2 eruzioni · VEI max. ?1160 BCE~837 BCE · 1 eruzioni · VEI max. ?837 BCE~513 BCE · 1 eruzioni · VEI max. ?513 BCE~190 BCE · 2 eruzioni · VEI max. ?190 BCE~133 · 1 eruzioni · VEI max. ?780~1103 · 7 eruzioni · VEI max. ?1103~1427 · 4 eruzioni · VEI max. ?1427~1750 · 2 eruzioni · VEI max. ?7950 BCE5687 BCE3100 BCE837 BCE1427

Cronologia dettagliata

  1. 1750VEI ?Stima geologica
    1750 – In corso
    SW rift zone (180-360 m)
  2. 1460 (±75 anni)VEI ?Stima geologica
    1460 – In corso
    East rift zone
  3. 1420 (±100 anni)VEI ?Stima geologica
    1420 – In corso
    SW rift zone
  4. 1360 (±100 anni)VEI ?Stima geologica
    1360 – In corso
    SW rift zone (~1600 m)
  5. 1350 (±150 anni)VEI ?Stima geologica
    1350 – In corso
    SW rift zone (~1500 m)
  6. 1200 (±75 anni)VEI ?Stima geologica
    1200 – In corso
    SW rift zone (~1200 m)
  7. 1080 (±40 anni)VEI ?Stima geologica
    1080 – In corso
    North crater wall (Hanakauhi flow)
  8. 1020 (±50 anni)VEI ?Stima geologica
    1020 – In corso
    SW rift zone
  9. 1010 (±40 anni)VEI ?Stima geologica
    1010 – In corso
    Haleakala crater (Halali'i)
  10. 990 (±50 anni)VEI ?Stima geologica
    990 – In corso
    East rift zone
  11. 980 (±50 anni)VEI ?Stima geologica
    980 – In corso
    Haleakala crater (Puu o ka O'o)
  12. 910 (±40 anni)VEI ?Stima geologica
    910 – In corso
    Haleakala crater
  13. 790 (±50 anni)VEI ?Stima geologica
    790 – In corso
    Haleakala crater (Puu Nole)
  14. 80 (±40 anni)VEI ?Stima geologica
    80 – In corso
    Haleakala crater
  15. 290 a.C.VEI ?Stima geologica
    BCE 290 – In corso
    SW rift zone (~2400 m)
  16. 390 a.C. (±40 anni)VEI ?Stima geologica
    BCE 390 – In corso
    North crater wall
  17. 580 a.C. (±50 anni)VEI ?Stima geologica
    BCE 580 – In corso
    Haleakala crater
  18. 1140 a.C. (±30 anni)VEI ?Stima geologica
    BCE 1140 – In corso
    SW rift zone
  19. 1240 a.C.VEI ?Stima geologica
    BCE 1240 – In corso
    Upper SW rift zone (~2800 m)
  20. 1310 a.C.VEI ?Stima geologica
    BCE 1310 – In corso
    Upper SW rift zone (~2600 m)
  21. 1800 a.C. (±50 anni)VEI ?Stima geologica
    BCE 1800 – In corso
    Haleakala crater
  22. 1850 a.C.VEI ?Stima geologica
    BCE 1850 – In corso
    SW rift zone (~1600 m)
  23. 1900 a.C. (±50 anni)VEI ?Stima geologica
    BCE 1900 – In corso
    East rift zone
  24. 1940 a.C. (±40 anni)VEI ?Stima geologica
    BCE 1940 – In corso
    SW rift zone
  25. 2120 a.C. (±50 anni)VEI ?Stima geologica
    BCE 2120 – In corso
    Haleakala crater (Puu Maile)
  26. 2210 a.C. (±40 anni)VEI ?Stima geologica
    BCE 2210 – In corso
    East rift zone
  27. 2260 a.C. (±40 anni)VEI ?Stima geologica
    BCE 2260 – In corso
    East rift zone (East Camp cone)
  28. 2470 a.C. (±50 anni)VEI ?Stima geologica
    BCE 2470 – In corso
    SW rift zone (~2000 m)
  29. 2580 a.C. (±40 anni)VEI ?Stima geologica
    BCE 2580 – In corso
  30. 3070 a.C. (±40 anni)VEI ?Stima geologica
    BCE 3070 – In corso
    East rift zone
  31. 4760 a.C. (±40 anni)VEI ?Stima geologica
    BCE 4760 – In corso
  32. 5860 a.C. (±40 anni)VEI ?Stima geologica
    BCE 5860 – In corso
    East rift zone
  33. 6030 a.C. (±40 anni)VEI ?Stima geologica
    BCE 6030 – In corso
    East rift zone
  34. 6220 a.C. (±50 anni)VEI ?Stima geologica
    BCE 6220 – In corso
    SW rift zone
  35. 6700 a.C. (±100 anni)VEI ?Stima geologica
    BCE 6700 – In corso
    SW rift zone
  36. 6760 a.C. (±40 anni)VEI ?Stima geologica
    BCE 6760 – In corso
    SW rift zone (W of Kanahau)
  37. 7210 a.C.VEI ?Stima geologica
    BCE 7210 – In corso
    Upper SW rift zone
  38. 7450 a.C. (±300 anni)VEI ?Stima geologica
    BCE 7450 – In corso
    East rift zone
  39. 7570 a.C. (±75 anni)VEI ?Stima geologica
    BCE 7570 – In corso
    East rift zone
  40. 7950 a.C. (±200 anni)VEI ?Stima geologica
    BCE 7950 – In corso
    SW rift zone (~1800 m)

Link esterni

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