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Southern EPR-Segment I

Southern EPR at 18.5°S (Segment I)

Fisura volcánica · Undersea Features · 2600 m (submarino)

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
Fisura volcánica
País
Undersea Features
Región
Southern Pacific Volcanic Regions / Southern East Pacific Rise Volcanic Province
Altitud
2600 m (submarino)
Coordenadas
-18.530, -113.420
Última erupción
1915
Contexto tectónico
Rift zone / Oceanic crust (< 15 km)
Forma volcánica
Cluster
Roca principal
Basalt / Picro-Basalt
Resumen geológico

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.

Historial de erupciones

Resumen (VEI en el tiempo)
Haga clic en una barra para ver erupciones individuales
1620~1650 · 1 erupciones · VEI máx. 01856~1886 · 1 erupciones · VEI máx. 01886~1915 · 1 erupciones · VEI máx. 016201679176818271886

Línea de tiempo detallada

  1. 1915 (±40 años)VEI 0Estimación geológica
    1915 – En curso
  2. 1860VEI 0Estimación geológica
    1860 – En curso
  3. 1620VEI 0Estimación geológica
    1620 – En curso

Enlaces externos

⚠ Solo como referencia. No apto para respuesta ante emergencias.