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Southern EPR-Segment I

Southern EPR at 18.5°S (Segment I)

Rekahan erupsi · Undersea Features · 2600 m (bawah laut)

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/).
Tipe
Rekahan erupsi
Negara
Undersea Features
Wilayah
Southern Pacific Volcanic Regions / Southern East Pacific Rise Volcanic Province
Ketinggian
2600 m (bawah laut)
Koordinat
-18.530, -113.420
Letusan terakhir
1915
Kondisi tektonik
Rift zone / Oceanic crust (< 15 km)
Bentuk lahan
Cluster
Batuan utama
Basalt / Picro-Basalt
Ringkasan geologi

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.

Riwayat letusan

Ringkasan (VEI dari waktu ke waktu)
Klik pada bar untuk melihat letusan individu
1620~1650 · 1 letusan · VEI maks. 01856~1886 · 1 letusan · VEI maks. 01886~1915 · 1 letusan · VEI maks. 016201679176818271886

Garis waktu rinci

  1. 1915 (±40 tahun)VEI 0Perkiraan geologi
    1915 – Berlangsung
  2. 1860VEI 0Perkiraan geologi
    1860 – Berlangsung
  3. 1620VEI 0Perkiraan geologi
    1620 – Berlangsung

Tautan eksternal

⚠ Untuk referensi saja. Bukan untuk tanggap darurat.