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Undersea features · Fissure vent

Axial Seamount

Type
Fissure vent
Elevation
1410m (submarine)
Last eruption
2015
Axial Seamount
Photo: NOAA · Public domain · Wikimedia Commons
Type
Fissure vent
Country
Undersea features
Region
Eastern Pacific / Northeast Pacific Rifts Volcanic Province
Elevation
1410m (submarine)
Coordinates
45.950, -130.000
Last eruption
2015
Tectonic setting
Rift zone / Oceanic crust (< 15 km)
Landform
Cluster
Major rock type
Basalt / Picro-basalt

Geological summary

Axial Seamount rises 700 m above the mean level of the central Juan de Fuca Ridge crest about 480 km W of Cannon Beach, Oregon, to within about 1,400 m of the ocean surface.

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

From Wikipedia

Axial Seamount is a seamount, submarine volcano, and underwater shield volcano in the Pacific Ocean, located on the Juan de Fuca Ridge, approximately 480 km (298 mi) west of Cannon Beach, Oregon. Standing 1,100 m (3,609 ft) high, Axial Seamount is the youngest volcano and current eruptive center of the Cobb–Eickelberg Seamount chain. Located at the center of both a geological hotspot and a mid-ocean ridge, the seamount is geologically complex, and its origins are still poorly understood. Axial Seamount is set on a long, low-lying plateau, with two large rift zones trending 50 km (31 mi) to the northeast and southwest of its center. The volcano features an unusual rectangular caldera, and its flanks are pockmarked by fissures, vents, sheet flows, and pit craters up to 100 m (328 ft) deep; its geology is further complicated by its intersection with several smaller seamounts surrounding it.

Wikipedia · CC BY-SA · Read full article →

Eruption history

12 recordedGlossary

Record summary

Confirmed eruptions
12
Uncertain eruptions
0
Span of confirmed record
410 (±123 yrs) – 2015
Largest confirmed eruption
VEI 0 (2015, the most recent of 11)
Confirmed eruptions since 1900
4
Summary (VEI over time)
Click a bar to see individual eruptions · Use arrow keys to move between bars, Enter to open
410~571 · 1 eruptions · max VEI 0731~892 · 1 eruptions · max VEI 0892~1052 · 1 eruptions · max VEI ?1213~1373 · 3 eruptions · max VEI 01373~1534 · 1 eruptions · max VEI 01534~1694 · 1 eruptions · max VEI 01855~2015 · 4 eruptions · max VEI 0410731121315341855

Detailed timeline

  1. 2015VEI 0Observed
    2015-04-23 – 2015-05-24
    NE flank
  2. 2011VEI 0Observed
    2011-04-06 – 2011-04-12
    E caldera rim to 10 km S
  3. 1998VEI 0Observed
    1998-01-25 – 1998-02-05
    South end of Axial caldera
  4. 1976 (±6 yrs)VEI 0Observed
    1976-01-01 – 1982-01-01
  5. 1650 (±117 yrs)VEI 0Geological estimate
    1650 – end unknown
    East-central caldera floor
  6. 1400 (±71 yrs)VEI 0Geological estimate
    1400 – end unknown
    East caldera rim
  7. 1300 (±91 yrs)VEI 0Geological estimate
    1300 – end unknown
    NW caldera floor
  8. 1260 (±72 yrs)VEI 0Geological estimate
    1260 – end unknown
    NE caldera floor and rim
  9. 1230 (±76 yrs)VEI 0Geological estimate
    1230 – end unknown
    South caldera floor
  10. 1000 (±98 yrs)VEI ?Geological estimate
    1000 – end unknown
    West caldera rim
  11. 800 (±107 yrs)VEI 0Geological estimate
    800 – end unknown
    West caldera rim
  12. 410 (±123 yrs)VEI 0Geological estimate
    410 – end unknown
    East caldera rim

Nearby volcanoes

External links

⚠ For reference only. Not for emergency response.