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Krašeninnikov

Krasheninnikov

Caldera · Russia · 1816 m

Krasheninnikov is comprised of two overlapping edifices seen here from the north, with both cones topped by 800-m-wide craters. Construction of the northern cone (bottom) began about 6,500 years ago and eventually formed an inner cone within a 2-km-wide crater, the rim of which is visible to the left. The small inner cone of the northern crater was built during an eruption about 400 years ago which also produced a SW-flank lava flow.
Krasheninnikov is comprised of two overlapping edifices seen here from the north, with both cones topped by 800-m-wide craters. Construction of the northern cone (bottom) began about 6,500 years ago and eventually formed an inner cone within a 2-km-wide crater, the rim of which is visible to the left. The small inner cone of the northern crater was built during an eruption about 400 years ago which also produced a SW-flank lava flow. · Foto: Photo courtesy of Anatoli Khrenov, 1989 (Institute of Volcanology, Petropavlovsk). · Wikimedia Commons
Tipo
Caldera
Paese
Russia
Regione
Northwestern Pacific Volcanic Regions / Eastern Kamchatka Volcanic Arc
Altitudine
1816 m
Coordinate
54.596, 160.270
Ultima eruzione
2026
Contesto tettonico
Subduction zone / Continental crust (> 25 km)
Forma vulcanica
Composite
Roccia principale
Basalt / Picro-Basalt
Sintesi geologica

The late Pleistocene to Holocene Krasheninnikov volcano is comprised of two overlapping stratovolcanoes within a 9 x 10 km Pleistocene caldera. Young lava flows from summit and flank vents descend both into the caldera and down its outer flanks, and older flows that covered much of the SE caldera rim extended downslope at least 7 km. Tephra deposits from the caldera-forming eruption directly overlie a 39,000 years before present (BP) tephra thought to be associated with the formation of Uzon caldera (Florenskii, 1988). The intra-caldera stratovolcanoes are situated along a NE-SW-trending fissure that has also produced zones of Holocene cinder cones extending 15-20 km beyond the caldera. Construction of the southern edifice began about 11,000 years BP and lasted for about 4,500 years; it has a summit crater about 800-900 m wide. The northern edifice was constructed during a cycle of similar length that began about 6,500 years ago; it has a summit crater about 1.5 km wide, within which is low cone with an 800-m-wide crater containing another small cone. An eruptive cycle during about 600-400 years BP (1350-1550 CE) produced the Pauk lava cone in the crater of the northern cone and the Yuzhny lava flow on SW flank outside the caldera, followed by the Molodoy flow from the upper SW flank (Ponomareva, 1987; Ponomareva and Tsyurupa, 1985; Ponomareva and Braitseva, 1990).

Sintesi da Wikipedia

Il Krašeninnikov è un apparato vulcanico costituito da due stratovulcani sovrapposti all'interno di una vasta caldera nella parte orientale della penisola della Kamčatka, nella Russia orientale. Il suo nome commemora l'esploratore russo Stepan Krašeninnikov (1711-1755), membro della grande spedizione del Nord (1737-1741).

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Storia delle eruzioni

Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
8050 BCE~7714 BCE · 1 eruzioni · VEI max. ?7378 BCE~7042 BCE · 1 eruzioni · VEI max. ?6707 BCE~6371 BCE · 1 eruzioni · VEI max. ?6371 BCE~6035 BCE · 2 eruzioni · VEI max. ?6035 BCE~5699 BCE · 2 eruzioni · VEI max. 45699 BCE~5363 BCE · 1 eruzioni · VEI max. ?5363 BCE~5027 BCE · 2 eruzioni · VEI max. ?5027 BCE~4692 BCE · 1 eruzioni · VEI max. ?4692 BCE~4356 BCE · 1 eruzioni · VEI max. ?3684 BCE~3348 BCE · 1 eruzioni · VEI max. ?3348 BCE~3012 BCE · 1 eruzioni · VEI max. ?3012 BCE~2677 BCE · 1 eruzioni · VEI max. ?2341 BCE~2005 BCE · 1 eruzioni · VEI max. ?1669 BCE~1333 BCE · 2 eruzioni · VEI max. 31333 BCE~997 BCE · 3 eruzioni · VEI max. 3997 BCE~662 BCE · 1 eruzioni · VEI max. ?662 BCE~326 BCE · 2 eruzioni · VEI max. ?326 BCE~10 · 2 eruzioni · VEI max. 4346~682 · 1 eruzioni · VEI max. 2682~1018 · 2 eruzioni · VEI max. 31018~1353 · 1 eruzioni · VEI max. 01353~1689 · 1 eruzioni · VEI max. ?1689~2025 · 1 eruzioni · VEI max. ?8050 BCE5699 BCE3012 BCE662 BCE1689

Cronologia dettagliata

  1. 2025VEI ?Osservata
    2025-08-02 – 2026-03-25
  2. 1550VEI ?Stima geologica
    1550 – In corso
    Northern cone (Pauk) and SW of S cone
  3. 1350VEI 0Stima geologica
    1350 – In corso
    SW flank of southern cone
  4. 850VEI ?Stima geologica
    850 – In corso
    Northern cone
  5. 750VEI 3Stima geologica
    750 – In corso
    Central N cone, SE flank of S cone
  6. 650VEI 2Stima geologica
    650 – In corso
    NW flank and central northern cone
  7. 150 a.C.VEI 4Stima geologica
    BCE 150 – In corso
    Northern cone
  8. 250 a.C.VEI ?Stima geologica
    BCE 250 – In corso
    Northern cone
  9. 350 a.C.VEI ?Stima geologica
    BCE 350 – In corso
    Northern cone
  10. 650 a.C.VEI ?Stima geologica
    BCE 650 – In corso
    Northern cone and southern cone flank
  11. 850 a.C.VEI ?Stima geologica
    BCE 850 – In corso
    Northern cone and southern cone flank
  12. 1000 a.C. (±50 anni)VEI 3Stima geologica
    BCE 1000 – In corso
    Northern cone
  13. 1050 a.C.VEI ?Stima geologica
    BCE 1050 – In corso
    Northern cone
  14. 1150 a.C.VEI ?Stima geologica
    BCE 1150 – In corso
    Northern cone
  15. 1350 a.C.VEI 3Stima geologica
    BCE 1350 – In corso
    N (Zametny) & S (Duga) flank fissures
  16. 1650 a.C.VEI ?Stima geologica
    BCE 1650 – In corso
    Northern cone
  17. 2250 a.C.VEI ?Stima geologica
    BCE 2250 – In corso
    Northern cone
  18. 2950 a.C.VEI ?Stima geologica
    BCE 2950 – In corso
    Northern cone & N outer flank fissure
  19. 3250 a.C.VEI ?Stima geologica
    BCE 3250 – In corso
    Northern cone
  20. 3550 a.C.VEI ?Stima geologica
    BCE 3550 – In corso
    Northern cone, outer N-flank fissure
  21. 4450 a.C.VEI ?Stima geologica
    BCE 4450 – In corso
    Northern cone
  22. 4850 a.C.VEI ?Stima geologica
    BCE 4850 – In corso
    Southern cone
  23. 5050 a.C.VEI ?Stima geologica
    BCE 5050 – In corso
    Southern cone
  24. 5250 a.C.VEI ?Stima geologica
    BCE 5250 – In corso
    Northern outer flank fissure
  25. 5450 a.C.VEI ?Stima geologica
    BCE 5450 – In corso
    Southern cone
  26. 5800 a.C. (±50 anni)VEI 4Stima geologica
    BCE 5800 – In corso
    Southern cone summit and west flank
  27. 6000 a.C. (±50 anni)VEI 4Stima geologica
    BCE 6000 – In corso
    Southern cone summit and flank
  28. 6250 a.C.VEI ?Stima geologica
    BCE 6250 – In corso
    Northern outer flank fissure
  29. 6350 a.C.VEI ?Stima geologica
    BCE 6350 – In corso
    Southern cone summit and flank
  30. 6550 a.C.VEI ?Stima geologica
    BCE 6550 – In corso
    Southern cone summit, outer SW flank
  31. 7250 a.C.VEI ?Stima geologica
    BCE 7250 – In corso
    Southern cone & S outer flank fissure
  32. 8050 a.C.VEI ?Stima geologica
    BCE 8050 – In corso
    Southern cone & S outer flank fissure

Link esterni

⚠ Solo a scopo informativo. Non adatto a situazioni di emergenza.