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Mount Banahaw

Banahaw

Complex volcano · Philippines · 2158m

Mount Banahaw is the highest of a group of volcanoes S and E of Manila. The smaller San Cristóbal and Banáhao de Lucban have formed on the W and E flanks, respectively. This view from the SW shows a valley descending from the summit that formed or deepened during the outbreak of a crater lake in 1730. Collapse events produced two major debris avalanches, the largest of which traveled 26 km SE to the sea, where it forms a 10-km-long section of Tayabas Bay coastline.
Mount Banahaw is the highest of a group of volcanoes S and E of Manila. The smaller San Cristóbal and Banáhao de Lucban have formed on the W and E flanks, respectively. This view from the SW shows a valley descending from the summit that formed or deepened during the outbreak of a crater lake in 1730. Collapse events produced two major debris avalanches, the largest of which traveled 26 km SE to the sea, where it forms a 10-km-long section of Tayabas Bay coastline. · Photo: Photo by Chris Newhall, 1989 (U.S. Geological Survey). · Wikimedia Commons
Type
Complex volcano
Country
Philippines
Region
Western Pacific Volcanic Regions / Luzon Volcanic Arc
Elevation
2158m
Coordinates
14.070, 121.480
Last eruption
Unknown
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Landform
Composite
Major rock type
Andesite / Basaltic Andesite
Geological summary

Banahaw (also known as Banahao), the highest of a group of volcanoes south and east of Manila, is flanked by San Cristobal (7 km W) and Banahaw de Lucban on the NE. Andesitic-to-dacitic lava domes occur on the flanks of both Banahaw and San Cristobal. Deposits from two major Holocene debris avalanches from Banahaw extend 13 km NE and 26 km SE, where it forms 10 km of the coastline of Tayabas Bay. The youthfule morphology of the San Cristobal stratovolcano suggests that it postdates Banahaw. Banahaw de Lucban stratovolcano was constructed within the 8-km-wide amphitheater related to the two debris avalanches, and is the youngest volcano of the Banahaw complex. The 2-km-wide, 600-m-deep summit crater of Banahaw is open to the SSW and contained a crater lake until 1730, when it drained, forming mudflows. Mudflows were also recorded in 1743?, 1843 and 1909, possibly also associated with explosive activity.

From Wikipedia

Mount Banahaw is an active complex volcano on Luzon in the Philippines. The three-peaked volcano is located at the boundary of Laguna and Quezon provinces. It is the highest mountain in both provinces and Calabarzon region, dominating the landscape for miles around.

Wikipedia · CC BY-SA · Read full article →

Eruption history

Summary (VEI over time)
Click a bar to see individual eruptions
1730~1748 · 2 eruptions · max VEI ?1837~1855 · 1 eruptions · max VEI ?1891~1909 · 1 eruptions · max VEI ?17301766182018551891

Detailed timeline

  1. 1909VEI ?Geological estimate
    1909 – Ongoing
    Banáhao
  2. 1843VEI ?Geological estimate
    1843 – Ongoing
    Banáhao
  3. 1743VEI ?Geological estimate
    1743 – Ongoing
    Banáhao
  4. 1730VEI ?Geological estimate
    1730 – Ongoing
    Banáhao

External links

⚠ For reference only. Not for emergency response.