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United States · Stratovolcano

Pagan

Type
Stratovolcano
Elevation
570m
Last eruption
2021
Pagan
Photo: Norm Banks, U.S. Geological Survey · Public domain · Wikimedia Commons
Type
Stratovolcano
Country
United States
Region
Northwestern Pacific / Mariana Volcanic Arc
Elevation
570m
Coordinates
18.130, 145.800
Last eruption
2021
Tectonic setting
Subduction zone / Crustal thickness unknown
Landform
Composite
Major rock type
Basalt / Picro-basalt
Geological summary

Pagan Island, the largest and one of the most active of the Mariana Islands volcanoes, consists of two stratovolcanoes connected by a narrow isthmus. Both North and South Pagan stratovolcanoes were constructed within calderas, 7 and 4 km in diameter, respectively. North Pagan at the NE end of the island rises above the flat floor of the northern caldera, which may have formed less than 1,000 years ago. South Pagan is a stratovolcano with an elongated summit containing four distinct craters. Almost all of the recorded eruptions, which date back to the 17th century, have originated from North Pagan. The largest eruption during historical time took place in 1981 and prompted the evacuation of the sparsely populated island.

From Wikipedia

Pagan is a volcanic island in the Marianas archipelago in the northwest Pacific Ocean, under the jurisdiction of the Commonwealth of the Northern Mariana Islands. It lies midway between Alamagan to the south and Agrihan to the north. The island has been largely uninhabited since the majority of the residents were evacuated due to volcanic eruptions in 1981.

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Eruption history

24 recordedGlossary
Summary (VEI over time)
Click a bar to see individual eruptions · Use arrow keys to move between bars, Enter to open
1340~1408 · 1 eruptions · max VEI ?1612~1681 · 1 eruptions · max VEI ?1749~1817 · 1 eruptions · max VEI ?1817~1885 · 3 eruptions · max VEI 31885~1953 · 5 eruptions · max VEI 31953~2021 · 13 eruptions · max VEI 413401476168118171953

Detailed timeline

  1. 2021VEI 2Observed
    2021-07-29 – 2021-09-06
  2. 2012VEI 2Observed
    2012-07-10 – 2012-07-10
    North Pagan
  3. 2011VEI 2Observed
    2011-04-23 – 2011-09-01
    North Pagan
  4. 2010VEI 1Observed
    2010-05-03 – 2010-08-11
    North Pagan
  5. 2009VEI 2Method not stated
    2009-04-15 – end unknown
    North Pagan
  6. 2006VEI 1Observed
    2006-12-04 – 2006-12-08
    North Pagan
  7. 1996VEI 1Observed
    1996-07-02 – end unknown
    North Pagan
  8. 1993VEI 2Observed
    1993-01-15 – 1993-11-16
    North Pagan
  9. 1992VEI 1Observed
    1992-04-13 – 1992-04-13
    North Pagan
  10. 1988VEI ?Method not stated
    1988-02-16 – end unknown
    North Pagan
  11. 1988VEI 2Observed
    1988-08-24 – 1988-10-12
    North Pagan
  12. 1987VEI 1Observed
    1987-09-04 – 1987-09-04
    North Pagan
  13. 1981VEI 4Observed
    1981-05-15 – 1985-05-01
    North Pagan (summit and north flank)
  14. 1929VEI ?Method not stated
    1929-07-02 – 1930-07-02
    South Pagan, cone within caldera
  15. 1925VEI 2Observed
    1925-02-16 – 1925-05-05
  16. 1923VEI 3Observed
    1923-02-16 – 1923-03-26
    North Pagan
  17. 1917VEI 2Observed
    1917-07-02 – end unknown
    North Pagan
  18. 1909VEI 2Observed
    1909-07-02 – end unknown
    North Pagan
  19. 1873VEI 3Observed
    1873-07-02 – end unknown
    North Pagan
  20. 1864VEI 1Observed
    1864-07-02 – end unknown
    South Pagan
  21. 1825 (±5 yrs)VEI 2Observed
    1825-07-02 – end unknown
    North Pagan
  22. 1800 (±50 yrs)VEI ?Geological estimate
    1800-07-02 – end unknown
    North Pagan (west flank maar)
  23. 1669VEI ?Observed
    1669 – end unknown
    North Pagan
  24. 1340 (±100 yrs)VEI ?Geological estimate
    1340 – end unknown
    North Pagan (west flank maar)

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External links

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