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Formas submarinas · Fisura volcánica

Southern EPR-Segment I

Southern EPR at 18.5°S (Segment I)

Tipo
Fisura volcánica
Altitud
2600 m (submarino)
Última erupción
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
Fisura volcánica
País
Formas submarinas
Región
Pacífico Sur / Southern East Pacific Rise Volcanic Province
Altitud
2600 m (submarino)
Coordenadas
-18.530, -113.420
Última erupción
1915
Contexto tectónico
Zona de rift / Corteza oceánica (< 15 km)
Forma volcánica
Grupo volcánico
Roca principal
Basalto / Picrobasalto
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

3 registradasGlosario
Resumen (VEI en el tiempo)
Haga clic en una barra para ver erupciones individuales · Usa las flechas para moverte entre barras y Enter para abrir
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
    1915-07-02 – fin desconocido
  2. 1860VEI 0Estimación geológica
    1860-07-02 – fin desconocido
  3. 1620VEI 0Estimación geológica
    1620 – fin desconocido

Volcanes cercanos

Enlaces externos

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