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Rumble III Seamount

Rumble III

Stratovolcano · New Zealand · 220m (submarine)

The Rumble III seamount, the largest of the Rumbles group along the South Kermadec Ridge, rises 2,300 m from the sea floor to within about 200 m of the sea surface. Edifice collapse has left a large horseshoe-shaped scar breached to the W. Fresh-looking andesitic rocks have been dredged from its summit and basaltic lava from its flanks. Rumble III has been the source of several submarine eruptions detected by hydrophone signals.
The Rumble III seamount, the largest of the Rumbles group along the South Kermadec Ridge, rises 2,300 m from the sea floor to within about 200 m of the sea surface. Edifice collapse has left a large horseshoe-shaped scar breached to the W. Fresh-looking andesitic rocks have been dredged from its summit and basaltic lava from its flanks. Rumble III has been the source of several submarine eruptions detected by hydrophone signals. · Photo: Courtesy of Ian Wright (National Institute of Water and Atmospheric Research (NIWA), Wellington, New Zealand).
Type
Stratovolcano
Country
New Zealand
Region
Tonga-Kermadec Volcanic Regions / Southern Kermadec Volcanic Arc
Elevation
220m (submarine)
Coordinates
-35.745, 178.478
Last eruption
2008
Tectonic setting
Subduction zone / Oceanic crust (< 15 km)
Landform
Composite
Major rock type
Andesite / Basaltic Andesite
Geological summary

Rumble III seamount, the largest of the Rumbles group of submarine volcanoes along the South Kermadec Ridge, rises 2,300 m from the seafloor to within about 200 m of the surface. Collapse of the edifice produced a scarp open to the west and a large debris-avalanche deposit. Fresh-looking andesitic rocks have been dredged from the summit and basaltic lava from its flanks. It has been the source of several submarine eruptions detected by hydrophone signals.

Eruption history

Summary (VEI over time)
Click a bar to see individual eruptions
1958~1963 · 1 eruptions · max VEI 01963~1968 · 1 eruptions · max VEI 01968~1973 · 1 eruptions · max VEI 01973~1978 · 1 eruptions · max VEI 01983~1988 · 1 eruptions · max VEI 02003~2008 · 1 eruptions · max VEI 019581968198319932003

Detailed timeline

  1. 2008 (±1 yrs)VEI 0Observed
    2008-07-02 – Ongoing
  2. 1986VEI 0Observed
    1986-06-15 – 1986-08-05
  3. 1973VEI 0Observed
    1973-10-15 – 1973-10-17
  4. 1970VEI 0Observed
    1970-07-02 – Ongoing
  5. 1963VEI 0Observed
    1963-01-16 – 1966-12-16
  6. 1958VEI 0Observed
    1958-07-09 – 1962-07-02

External links

⚠ For reference only. Not for emergency response.