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Undersea features · Fissure vent

Southern EPR-Segment J

Southern EPR at 18.2°S (Segment J)

Type
Fissure vent
Elevation
2650m (submarine)
Last eruption
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. · Photo: Image courtesy of NOAA Vents Program, 1994 (www.pmel.noaa.gov/vents/chemistry/images/).
Type
Fissure vent
Country
Undersea features
Region
Southern Pacific / Southern East Pacific Rise Volcanic Province
Elevation
2650m (submarine)
Coordinates
-18.175, -113.350
Last eruption
1890
Tectonic setting
Rift zone / Oceanic crust (< 15 km)
Landform
Cluster
Major rock type
Basalt / Picro-basalt

Geological summary

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.

Excerpt from the Global Volcanism Program, Smithsonian Institution · Read the full summary on GVP →

Eruption history

2 recordedGlossary

Record summary

Confirmed eruptions
2
Uncertain eruptions
0
Span of confirmed record
1820 – 1890
Largest confirmed eruption
VEI 0 (1890, the most recent of 2)
Confirmed eruptions since 1900
0
Summary (VEI over time)
Click a bar to see individual eruptions · Use arrow keys to move between bars, Enter to open
1820~1827 · 1 eruptions · max VEI 01883~1890 · 1 eruptions · max VEI 018201834185518691883

Detailed timeline

  1. 1890VEI 0Geological estimate
    1890-07-02 – end unknown
  2. 1820VEI 0Geological estimate
    1820-07-02 – end unknown

Nearby volcanoes

External links

⚠ For reference only. Not for emergency response.