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Unnamed submarine volcano in the eastern Pacific Ocean

Northern EPR at 9.8°N

Frattura eruttiva · Undersea Features · 2500 m (sottomarino)

Fluid containing precipitates rises from a "black smoker" chimney at the Tica vent at 9°N on the East Pacific Rise, photographed during a 2004 expedition sponsored by the National Science Foundation. Hot-vent animal communities (such as seen in the foreground of this image from the November to December 1989 expedition) were observed to have been buried by lava flows in 1991. Another eruption in 2005-2006 produced lava flows that covered seismometers.
Fluid containing precipitates rises from a "black smoker" chimney at the Tica vent at 9°N on the East Pacific Rise, photographed during a 2004 expedition sponsored by the National Science Foundation. Hot-vent animal communities (such as seen in the foreground of this image from the November to December 1989 expedition) were observed to have been buried by lava flows in 1991. Another eruption in 2005-2006 produced lava flows that covered seismometers. · Foto: Photo courtesy of Ridge2000, 2004 (http://www.ridge2000.org/eo/expeditions.php).
Tipo
Frattura eruttiva
Paese
Undersea Features
Regione
Eastern Pacific Volcanic Regions / Northern East Pacific Rise Volcanic Province
Altitudine
2500 m (sottomarino)
Coordinate
9.830, -104.300
Ultima eruzione
2025
Contesto tettonico
Rift zone / Oceanic crust (< 15 km)
Forma vulcanica
Cluster
Roccia principale
Basalt / Picro-Basalt
Sintesi geologica

A series of dives with the submersible Alvin in 1991 on the East Pacific Rise at about 9°50'N detected evidence for a very recent, possibly ongoing, eruption. Hot-vent animal communities documented during November-December 1989 had been buried by fresh basaltic lava flows, and the scorched soft tissues of partially buried biota had not yet attracted bottom scavengers. Fresh black smoker chimneys and new lava flows were present. This site is south of the Clipperton Fracture Zone at a depth of about 2,500 m, and about 1,000 km SW of Acapulco, México; the south end of the Lamont Seamount chain is about 10 km NW. This is also the location where lava flows previously estimated as being less than roughly 50 years old had been found. Later dating using very short half-life radionuclides from dredged samples confirmed the young age of the eruption and indicated that another eruptive event had taken place in late 1991 and early 1992. An eruption in 2005-2006 produced lava flows that entrapped previously emplaced seismometers.

Storia delle eruzioni

Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni
5050 BCE~4814 BCE · 1 eruzioni · VEI max. 04107 BCE~3871 BCE · 1 eruzioni · VEI max. 03163 BCE~2927 BCE · 1 eruzioni · VEI max. 02220 BCE~1984 BCE · 1 eruzioni · VEI max. 01277 BCE~1041 BCE · 1 eruzioni · VEI max. 097 BCE~138 · 1 eruzioni · VEI max. 0846~1082 · 2 eruzioni · VEI max. 01082~1318 · 1 eruzioni · VEI max. 01553~1789 · 2 eruzioni · VEI max. 01789~2025 · 7 eruzioni · VEI max. 05050 BCE3399 BCE1512 BCE1381789

Cronologia dettagliata

  1. 2025VEI 0Osservata
    2025-04-28 – 2025-04-29
    Tica hydrothermal vent, 9°50’N (9.83°N)
  2. 2005VEI 0Osservata
    2005-08-16 – 2006-01-16
    East Pacific Rise (9.8°N)
  3. 1991VEI 0Stima geologica
    1991-01-27 – 1991-03-26
    East Pacific Rise (9.84°N)
  4. 1991VEI 0Stima geologica
    1991-12-01 – 1992-02-05
    East Pacific Rise (9.84°N)
  5. 1988VEI 0Osservata
    1988-07-02 – In corso
    East Pacific Rise (9.27°N)
  6. 1950VEI 0Stima geologica
    1950-07-02 – In corso
    East Pacific Rise (9.87°N)
  7. 1875VEI 0Stima geologica
    1875 – In corso
    East Pacific Rise (9.9°N)
  8. 1650 (±100 anni)VEI 0Stima geologica
    1650 – In corso
    East Pacific Rise (9.82°N)
  9. 1600 (±150 anni)VEI 0Stima geologica
    1600 – In corso
    East Pacific Rise (9.87°N)
  10. 1200 (±300 anni)VEI 0Stima geologica
    1200 – In corso
    East Pacific Rise (9.82°N)
  11. 950 (±2000 anni)VEI 0Stima geologica
    950 – In corso
    East Pacific Rise (9.5°N)
  12. 850 (±200 anni)VEI 0Stima geologica
    850 – In corso
    East Pacific Rise (9.87°N)
  13. 50 a.C. (±2000 anni)VEI 0Stima geologica
    BCE 50 – In corso
    East Pacific Rise (9.5°N)
  14. 1050 a.C. (±2000 anni)VEI 0Stima geologica
    BCE 1050 – In corso
    East Pacific Rise (9.5°N)
  15. 2050 a.C. (±2000 anni)VEI 0Stima geologica
    BCE 2050 – In corso
    East Pacific Rise (9.5°N)
  16. 3050 a.C. (±2000 anni)VEI 0Stima geologica
    BCE 3050 – In corso
    EPR axis and East of axis
  17. 4050 a.C. (±2000 anni)VEI 0Stima geologica
    BCE 4050 – In corso
    East Pacific Rise (9.5°N)
  18. 5050 a.C. (±8000 anni)VEI 0Stima geologica
    BCE 5050 – In corso
    EPR axis and East and West of axis

Link esterni

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