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Formazioni sottomarine · Frattura eruttiva

Unnamed submarine volcano in the eastern Pacific Ocean

Northern EPR at 9.8°N

Tipo
Frattura eruttiva
Altitudine
2500 m (sottomarino)
Ultima eruzione
2025
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
Formazioni sottomarine
Regione
Pacifico orientale / Northern East Pacific Rise Volcanic Province
Altitudine
2500 m (sottomarino)
Coordinate
9.830, -104.300
Ultima eruzione
2025
Contesto tettonico
Zona di rift / Crosta oceanica (< 15 km)
Forma vulcanica
Gruppo vulcanico
Roccia principale
Basalto / Picrobasalto
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

18 registrateGlossario
Riepilogo (VEI nel tempo)
Fai clic su una barra per vedere le singole eruzioni · Usa le frecce per spostarti tra le barre, Invio per aprire
5050 a.C.~4814 a.C. · 1 eruzioni · VEI max. 04107 a.C.~3871 a.C. · 1 eruzioni · VEI max. 03163 a.C.~2927 a.C. · 1 eruzioni · VEI max. 02220 a.C.~1984 a.C. · 1 eruzioni · VEI max. 01277 a.C.~1041 a.C. · 1 eruzioni · VEI max. 097 a.C.~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 a.C.3399 a.C.1512 a.C.1381789

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 – fine sconosciuta
    East Pacific Rise (9.27°N)
  6. 1950VEI 0Stima geologica
    1950-07-02 – fine sconosciuta
    East Pacific Rise (9.87°N)
  7. 1875VEI 0Stima geologica
    1875-07-02 – fine sconosciuta
    East Pacific Rise (9.9°N)
  8. 1650 (±100 anni)VEI 0Stima geologica
    1650 – fine sconosciuta
    East Pacific Rise (9.82°N)
  9. 1600 (±150 anni)VEI 0Stima geologica
    1600 – fine sconosciuta
    East Pacific Rise (9.87°N)
  10. 1200 (±300 anni)VEI 0Stima geologica
    1200 – fine sconosciuta
    East Pacific Rise (9.82°N)
  11. 950 (±2000 anni)VEI 0Stima geologica
    950 – fine sconosciuta
    East Pacific Rise (9.5°N)
  12. 850 (±200 anni)VEI 0Stima geologica
    850 – fine sconosciuta
    East Pacific Rise (9.87°N)
  13. 50 a.C. (±2000 anni)VEI 0Stima geologica
    50 a.C. – fine sconosciuta
    East Pacific Rise (9.5°N)
  14. 1050 a.C. (±2000 anni)VEI 0Stima geologica
    1050 a.C. – fine sconosciuta
    East Pacific Rise (9.5°N)
  15. 2050 a.C. (±2000 anni)VEI 0Stima geologica
    2050 a.C. – fine sconosciuta
    East Pacific Rise (9.5°N)
  16. 3050 a.C. (±2000 anni)VEI 0Stima geologica
    3050 a.C. – fine sconosciuta
    EPR axis and East of axis
  17. 4050 a.C. (±2000 anni)VEI 0Stima geologica
    4050 a.C. – fine sconosciuta
    East Pacific Rise (9.5°N)
  18. 5050 a.C. (±8000 anni)VEI 0Stima geologica
    5050 a.C. – fine sconosciuta
    EPR axis and East and West of axis

Vulcani nelle vicinanze

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