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Krasheninnikov

Kaldera · 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
Tipe
Kaldera
Negara
Russia
Wilayah
Northwestern Pacific Volcanic Regions / Eastern Kamchatka Volcanic Arc
Ketinggian
1816 m
Koordinat
54.596, 160.270
Letusan terakhir
2026
Kondisi tektonik
Subduction zone / Continental crust (> 25 km)
Bentuk lahan
Composite
Batuan utama
Basalt / Picro-Basalt
Ringkasan geologi

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).

Ringkasan Wikipedia

Ringkasan Inggris

Krasheninnikov is a complex of two overlapping stratovolcanoes inside a large caldera on the eastern coast of Kamchatka Peninsula, Russia. It is located in Kronotsky Nature Reserve to the south of Lake Kronotskoye, and is named after explorer Stepan Krasheninnikov.

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Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
8050 BCE~7714 BCE · 1 letusan · VEI maks. ?7378 BCE~7042 BCE · 1 letusan · VEI maks. ?6707 BCE~6371 BCE · 1 letusan · VEI maks. ?6371 BCE~6035 BCE · 2 letusan · VEI maks. ?6035 BCE~5699 BCE · 2 letusan · VEI maks. 45699 BCE~5363 BCE · 1 letusan · VEI maks. ?5363 BCE~5027 BCE · 2 letusan · VEI maks. ?5027 BCE~4692 BCE · 1 letusan · VEI maks. ?4692 BCE~4356 BCE · 1 letusan · VEI maks. ?3684 BCE~3348 BCE · 1 letusan · VEI maks. ?3348 BCE~3012 BCE · 1 letusan · VEI maks. ?3012 BCE~2677 BCE · 1 letusan · VEI maks. ?2341 BCE~2005 BCE · 1 letusan · VEI maks. ?1669 BCE~1333 BCE · 2 letusan · VEI maks. 31333 BCE~997 BCE · 3 letusan · VEI maks. 3997 BCE~662 BCE · 1 letusan · VEI maks. ?662 BCE~326 BCE · 2 letusan · VEI maks. ?326 BCE~10 · 2 letusan · VEI maks. 4346~682 · 1 letusan · VEI maks. 2682~1018 · 2 letusan · VEI maks. 31018~1353 · 1 letusan · VEI maks. 01353~1689 · 1 letusan · VEI maks. ?1689~2025 · 1 letusan · VEI maks. ?8050 BCE5699 BCE3012 BCE662 BCE1689

Garis waktu rinci

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

Tautan eksternal

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