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United States · Stratovolcano

Trident Volcano

Trident

Type
Stratovolcano
Elevation
1864m
Last eruption
1974
Trident Volcano
Photo: R. McGimsey, U.S. Geological Survey, · Public domain · Wikimedia Commons
Type
Stratovolcano
Country
United States
Region
North America / Alaska Peninsula Volcanic Arc
Elevation
1864m
Coordinates
58.236, -155.100
Last eruption
1974
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Landform
Composite
Major rock type
Andesite / Basaltic andesite

Geological summary

The Trident stratovolcano cluster was named for the three prominent peaks that were the most visible features at the summit prior to 1953.

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

From Wikipedia

Trident Volcano is an eroded volcanic complex on the Alaska Peninsula in Katmai National Park, Alaska. Up to 23 domes comprise the complex stratovolcano, with the greatest elevation of 6,115 feet (1,864 m). The most recent major activity produced a 3,599-foot (1,097 m) dome in an amphitheater on the southwest flank of the southwest peak. Volcano Novarupta formed on its slopes in the largest volcanic eruption of the 20th century.

Wikipedia · CC BY-SA · Read full article →

Eruption history

15 recordedGlossary

Record summary

Confirmed eruptions
15
Uncertain eruptions
0
Span of confirmed record
1913 – 1974
Largest confirmed eruption
VEI 3 (1974, the most recent of 8)
Confirmed eruptions since 1900
15
Summary (VEI over time)
Click a bar to see individual eruptions · Use arrow keys to move between bars, Enter to open
1913~1919 · 1 eruptions · max VEI 11944~1950 · 1 eruptions · max VEI ?1950~1956 · 2 eruptions · max VEI 31956~1962 · 3 eruptions · max VEI 21962~1968 · 6 eruptions · max VEI 31968~1974 · 2 eruptions · max VEI 319131925194419561968

Detailed timeline

  1. 1974VEI 3Observed
    1974-07-15 – end unknown
    SW flank
  2. 1968VEI 3Observed
    1968-11-13 – 1968-11-13
    SW flank
  3. 1967VEI 3Observed
    1967-09-05 – 1968-02-25
    SW flank
  4. 1966VEI 0Observed
    1966-07-02 – end unknown
    SW flank
  5. 1964VEI 3Observed
    1964-05-31 – end unknown
    SW flank
  6. 1963VEI 3Observed
    1963-04-01 – 1963-04-03
    SW flank
  7. 1963VEI 3Observed
    1963-10-17 – 1963-11-17
    SW flank
  8. 1962VEI 3Observed
    1962-06-09 – 1962-06-09
    SW flank
  9. 1961VEI 2Observed
    1961-06-30 – end unknown
    SW flank (1100 m)
  10. 1957VEI 2Observed
    1957-07-02 – 1960-08-10
    SW flank
  11. 1956VEI 2Method not stated
    1956-09-08 – 1956-09-09
    Volcano Uncertain: attributed to Trident
  12. 1953VEI 3Observed
    1953-02-15 – 1954-10-05
    SW flank (1100 m)
  13. 1950VEI 2Method not stated
    1950-07-02 – 1950-08-18
    Volcano Uncertain: attributed to Trident
  14. 1949VEI ?Observed
    1949-06-16 – end unknown
  15. 1913VEI 1Observed
    1913-09-16 – end unknown

Nearby volcanoes

External links

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