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Formazioni sottomarine · Frattura eruttiva

Southern EPR-Segment I

Southern EPR at 18.5°S (Segment I)

Tipo
Frattura eruttiva
Altitudine
2600 m (sottomarino)
Ultima eruzione
1915
Black smoker vents emitting low-chlorinity fluids at 374°C were photographed at the "RM28" site at 18°26’S on Segment I of the Southern East Pacific Rise in November 1994 from the Japanese submersible Shinkai 6500. The narrow axial crest of Segment I of the Southern East Pacific Rise in some places is less than 50 m wide. The largest lava flow field in this area is the Animal Farm flow, named after a thriving low-temperature hydrothermal site discovered during a 1993 submersible expedition.
Black smoker vents emitting low-chlorinity fluids at 374°C were photographed at the "RM28" site at 18°26’S on Segment I of the Southern East Pacific Rise in November 1994 from the Japanese submersible Shinkai 6500. The narrow axial crest of Segment I of the Southern East Pacific Rise in some places is less than 50 m wide. The largest lava flow field in this area is the Animal Farm flow, named after a thriving low-temperature hydrothermal site discovered during a 1993 submersible expedition. · 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
2600 m (sottomarino)
Coordinate
-18.530, -113.420
Ultima eruzione
1915
Contesto tettonico
Zona di rift / Crosta oceanica (< 15 km)
Forma vulcanica
Gruppo vulcanico
Roccia principale
Basalto / Picrobasalto
Sintesi geologica

The narrow axial crest of Segment I of the Southern East Pacific Rise in some places is less than 50 m wide. An axial dome is located along the southern part of the segment. The largest lava flow field in this segment is the Animal Farm flow, named after a thriving low-temperature hydrothermal site discovered during a submersible expedition in 1993. The Animal Farm lava flow was dated by magnetic paleointensity measurements at about 1880-1950 CE, and older flows were dated by similar techniques to the 17th and 19th centuries.

Storia delle eruzioni

3 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
1620~1650 · 1 eruzioni · VEI max. 01856~1886 · 1 eruzioni · VEI max. 01886~1915 · 1 eruzioni · VEI max. 016201679176818271886

Cronologia dettagliata

  1. 1915 (±40 anni)VEI 0Stima geologica
    1915-07-02 – fine sconosciuta
  2. 1860VEI 0Stima geologica
    1860-07-02 – fine sconosciuta
  3. 1620VEI 0Stima geologica
    1620 – fine sconosciuta

Vulcani nelle vicinanze

Link esterni

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