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Formazioni sottomarine · Frattura eruttiva

Southern EPR-Segment J

Southern EPR at 18.2°S (Segment J)

Tipo
Frattura eruttiva
Altitudine
2650 m (sottomarino)
Ultima eruzione
1890
Black smoker hydrothermal vents emitting high-chlorinity fluids were photographed at the "RM29" site at 18°10’S. This image was taken in November 1994 from the Japanese submersible Shinkai 6500. The axial crest of Segment J of the Southern East Pacific Rise consists of an asymmetrical shallow graben varying from 250 to 600 m wide with walls about 20 m high.
Black smoker hydrothermal vents emitting high-chlorinity fluids were photographed at the "RM29" site at 18°10’S. This image was taken in November 1994 from the Japanese submersible Shinkai 6500. The axial crest of Segment J of the Southern East Pacific Rise consists of an asymmetrical shallow graben varying from 250 to 600 m wide with walls about 20 m high. · Foto: Image courtesy of NOAA Vents Program, 1994 (www.pmel.noaa.gov/vents/chemistry/images/).
Tipo
Frattura eruttiva
Paese
Formazioni sottomarine
Regione
Pacifico meridionale / Southern East Pacific Rise Volcanic Province
Altitudine
2650 m (sottomarino)
Coordinate
-18.175, -113.350
Ultima eruzione
1890
Contesto tettonico
Zona di rift / Crosta oceanica (< 15 km)
Forma vulcanica
Gruppo vulcanico
Roccia principale
Basalto / Picrobasalto
Sintesi geologica

The axial crest of Segment J of the Southern East Pacific Rise consists of an asymmetrical shallow graben varying from 250 to 600 m wide with walls about 20 m high. Horst and graben structures expose cooled lava lakes and both active and extinct hydrothermal chimneys. Basaltic lava flow fields, lava pillars, and pillow mounds are found on the floor of the graben. The largest lava flow field is the Moai lava flow at about 18°12'S. Two lava flows have been dated by paleomagnetic evidence at about 1820 and 1890 CE.

Storia delle eruzioni

2 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
1820~1827 · 1 eruzioni · VEI max. 01883~1890 · 1 eruzioni · VEI max. 018201834185518691883

Cronologia dettagliata

  1. 1890VEI 0Stima geologica
    1890-07-02 – fine sconosciuta
  2. 1820VEI 0Stima geologica
    1820-07-02 – fine sconosciuta

Vulcani nelle vicinanze

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