Southern EPR-Segment I

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  • Country
  • Subregion Name
  • Primary Volcano Type
  • Last Known Eruption
  • 18.53°S
  • 113.42°W

  • -2600 m
    -8528 ft

  • 334140
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

There are no activity reports for Southern EPR-Segment I.



 Available Weekly Reports

There are no Weekly Reports available for Southern EPR-Segment I.

Summary of eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
1915 ± 40 years Unknown Confirmed 0 Magnetism Animal Farm lava flow
1860 (?) Unknown Confirmed 0 Magnetism Southern South Hump lava flow
1620 (?) Unknown Confirmed 0 Magnetism Northern South Hump lava flow

The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.

Bowles J, Gee J S, Kent D V, Bergmanis E, Sinton J, 2005. Cooling rate effects on paleointensity estimates in submarine basaltic glass and implications for dating young flows. Geochem Geophys Geosyst, 6: Q07002, doi:10.1029/2004GC000900.

Carlut J, Kent D V, 2000. Paleointensity record in zero-age submarine basalt glasses: testing a new dating technique for recent MORBs. Earth Planet Sci Lett, 183: 389-401.

Sinton J M, Smaglik S M, Mahoney J J, Macdonald K C, 1991. Magmatic processes at superfast spreading Mid-Ocean Ridges: glass compositional variations along the East Pacific Rise 13°-23° S. J Geophys Res, 96: 6133-6155.

Sinton J, Bergmanis E, Rubin K, Batiza R, Gregg T K P, Gronvold K, Macdonald K C, White S M, 2002. Volcanic eruptions on mid-ocean ridges: new evidence from the superfast spreading East Pacific Rise, 17°-19° S. J Geophys Res, 107: 2115, doi:10.1029/2000JB000090.

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 EPR 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 AD, and older flows were dated by similar techniques to the 17th and 19th centuries.