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Formas submarinas · Fisura volcánica

CoAxial Segment

Tipo
Fisura volcánica
Altitud
2400 m (submarino)
Última erupción
1993
During a 1993 ROPOS ROV (Remotely Operated Vehicle) dive on the CoAxial Segment along the Juan de Fuca Ridge a new lava flow was discovered on the sea floor. It was still hot and venting warm water (up to 50°C), and was 2.5 km long and 300 m wide. Bright yellow sediment patches indicated the presence of iron-reducing bacteria in the vent fluids. The CoAxial segment is located about 435 km W of the Oregon coast, NE of Axial volcano.
During a 1993 ROPOS ROV (Remotely Operated Vehicle) dive on the CoAxial Segment along the Juan de Fuca Ridge a new lava flow was discovered on the sea floor. It was still hot and venting warm water (up to 50°C), and was 2.5 km long and 300 m wide. Bright yellow sediment patches indicated the presence of iron-reducing bacteria in the vent fluids. The CoAxial segment is located about 435 km W of the Oregon coast, NE of Axial volcano. · Foto: Image courtesy of National Oceanic and Atmospheric Administration (http://www.pmel.noaa.gov/vents/home.html).
Tipo
Fisura volcánica
País
Formas submarinas
Región
Pacífico Oriental / Northeast Pacific Rifts Volcanic Province
Altitud
2400 m (submarino)
Coordenadas
46.520, -129.580
Última erupción
1993
Contexto tectónico
Zona de rift / Corteza oceánica (< 15 km)
Forma volcánica
Grupo volcánico
Roca principal
Basalto / Picrobasalto
Resumen geológico

The CoAxial segment of the Juan de Fuca Ridge is about 435 km W of the Oregon coast, NE of Axial volcano. A submarine eruption along the CoAxial segment that produced thermal plumes and a new lava flow was detected by acoustic hydrophones in June 1993, just days after installation of the hydrophone system. This was the first deep-sea volcanic eruption detected as it was happening. The location of the eruption was at a depth of about 2,400 m, about 37 km NE of Axial volcano. Bathymetric surveys indicated that one or more additional sea-floor lava extrusions took place immediately east of the 1993 lava flow sometime between 1981-82 and 1991.

Historial de erupciones

2 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
1986~1987 · 1 erupciones · VEI máx. 01992~1993 · 1 erupciones · VEI máx. 019861987199019911992

Línea de tiempo detallada

  1. 1993VEI 0Observado
    1993-06-26 – 1993-07-04
    N end CoAxial segment, Juan de Fuca Ridge
  2. 1986 (±5 años)VEI 0Observado
    1986-07-02 – fin desconocido
    CoAxial segment, Juan de Fuca Ridge

Volcanes cercanos

Enlaces externos

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