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Papua New Guinea · Stratovolcano

Bam

Type
Stratovolcano
Elevation
685m
Last eruption
1960
Bam
Photo: Jack Lockwood, USGS · Public domain · Wikimedia Commons
Type
Stratovolcano
Country
Papua New Guinea
Region
Southwestern Pacific / Bismarck Volcanic Arc
Elevation
685m
Coordinates
-3.613, 144.818
Last eruption
1960
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Landform
Composite
Major rock type
Andesite / Basaltic andesite
Geological summary

The 1.6 x 2.4 km island of Bam is the summit of a mostly submerged volcano in the Schouten Islands off the coast of New Guinea, ~40 km NNE of the mouth of the Sepik River. A steep-walled summit crater that is 300 m wide and 180 m deep is the source of recent eruptions, which have kept the upper half of the cone sparsely vegetated. A NE-trending landslide scarp extends across the upper part of the andesitic volcano from the SW coast, and a large submarine debris-avalanche deposits lies to the S and SW. The younger summit cone partially buries the eastern side of the collapse scarp. A recent lava platform on the N flank supports the small island's only villages. Eruptions recorded since 1872 have all consisted of small-to-moderate explosive activity from the summit crater.

Eruption history

22 recordedGlossary
Summary (VEI over time)
Click a bar to see individual eruptions · Use arrow keys to move between bars, Enter to open
1872~1881 · 3 eruptions · max VEI 31881~1890 · 3 eruptions · max VEI ?1890~1898 · 1 eruptions · max VEI ?1898~1907 · 1 eruptions · max VEI 21907~1916 · 3 eruptions · max VEI 21916~1925 · 2 eruptions · max VEI 21934~1942 · 1 eruptions · max VEI ?1942~1951 · 2 eruptions · max VEI 21951~1960 · 6 eruptions · max VEI 218721890191619341951

Detailed timeline

  1. 1960VEI 2Observed
    1960-04-28 – 1960-07-06
  2. 1959VEI 2Observed
    1959-04-02 – 1959-10-31
  3. 1958VEI 2Observed
    1958-03-11 – 1958-04-19
  4. 1958VEI 2Observed
    1958-09-05 – 1958-09-10
  5. 1957VEI 1Observed
    1957-10-26 – 1957-10-26
  6. 1954VEI 2Observed
    1954-08-03 – 1957-01-02
  7. 1947VEI 2Observed
    1947-03-13 – end unknown
  8. 1944VEI 2Observed
    1944-07-02 – end unknown
  9. 1936VEI ?Method not stated
    1936-07-16 – 1939-04-16
  10. 1924VEI 2Observed
    1924-07-02 – end unknown
  11. 1918VEI ?Observed
    1918-09-18 – end unknown
  12. 1913VEI ?Observed
    1913-07-02 – end unknown
  13. 1909VEI 2Observed
    1909-04-19 – 1909-09-13
  14. 1908VEI 2Observed
    1908-07-12 – end unknown
  15. 1907VEI 2Observed
    1907-11-16 – end unknown
  16. 1897VEI ?Method not stated
    1897-07-02 – 1898-07-02
  17. 1888VEI ?Method not stated
    1888-07-02 – end unknown
  18. 1885VEI ?Method not stated
    1885-05-20 – end unknown
  19. 1883VEI ?Method not stated
    1883-03-16 – end unknown
  20. 1877VEI 3Observed
    1877-11-13 – end unknown
  21. 1874VEI 2Observed
    1874-05-20 – end unknown
  22. 1872 (±4 yrs)VEI 3Observed
    1872-07-02 – end unknown

Nearby volcanoes

External links

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