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Undersea features · Fissure vent

East Gakkel Ridge at 85 E

East Gakkel Ridge at 85°E

Type: Fissure vent
Elevation: 3800m (submarine)
Last eruption: 1999

Detailed bathymetry of the East Gakkel Ridge at 85°E in the Arctic Ocean. The inset map shows the location of the 85°E segment (yellow star) along the Gakkel Ridge (red line). The main panel shows illuminated color bathymetry (30-m grid spacing) of the 85°E segment acquired during the AGAVE expedition. The axial valley contains large numbers of distinctive, cratered volcanoes, including a cone on a fault terrace of the northern valley wall. Named features include two volcanic ridges in the center of the axial valley (Jessica’s Hill and Duque’s Hill), and three cratered volcanoes along a ridge-parallel fissure to the south (Oden, Thor, and Loke). The bathymetry data were plotted with Generic Mapping Tools. — Detailed bathymetry of the East Gakkel Ridge at 85°E in the Arctic Ocean. The inset map shows the location of the 85°E segment (yellow star) along the Gakkel Ridge (red line). The main panel shows illuminated color bathymetry (30-m grid spacing) of the 85°E segment acquired during the AGAVE expedition. The axial valley contains large numbers of distinctive, cratered volcanoes, including a cone on a fault terrace of the northern valley wall. Named features include two volcanic ridges in the center of the axial valley (Jessica’s Hill and Duque’s Hill), and three cratered volcanoes along a ridge-parallel fissure to the south (Oden, Thor, and Loke). The bathymetry data were plotted with Generic Mapping Tools. · Photo: Sohn et al., 2008. Explosive volcanism on the ultraslow-spreading Gakkel ridge, Arctic Ocean. Nature, v. 453, p. 1236-1238.

Type: Fissure vent
Country: Undersea features
Region: Atlantic Ocean / Arctic Ridge Volcanic Province
Elevation: 3800m (submarine)
Coordinates: 85.608, 85.250
Last eruption: 1999
Tectonic setting: Rift zone / Oceanic crust (< 15 km)
Landform: Cluster
Major rock type: No data

Geological summary

During January-September 1999 global seismic networks detected an earthquake swarm along the East Gakkel Ridge (near 86°N, 85°E).

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

Eruption history

1 recordedGlossary

Record summary

Confirmed eruptions: 1
Uncertain eruptions: 0
Span of confirmed record: 1999 – 1999
Largest confirmed eruption: VEI 2 (1999)
Confirmed eruptions since 1900: 1

Summary (VEI over time)

Click a bar to see individual eruptions ·

Detailed timeline

1999VEI 2Observed
1999-04-05 – 1999-04-15
East Gakkel Ridge

Nearby volcanoes

External links

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Smithsonian GVP source page

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