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Lake Ranau

Ranau

Caldera · Indonesia · 1854m

Lake Ranau partially fills the 8 x 13 km Ranau caldera. A morphologically young post-caldera stratovolcano, Gunung Semuning, its summit obscured by clouds below the bottom center lake shore in this NASA Landsat image (N is to the top), was constructed within the SE side of the caldera to a height of more than 1,600 m above the caldera lake surface. The age of the most recent eruptions at Ranau are not known, but fish kills and the smell of sulfur in the late 19th and early 20th centuries may have been related to eruptions within the lake.
Lake Ranau partially fills the 8 x 13 km Ranau caldera. A morphologically young post-caldera stratovolcano, Gunung Semuning, its summit obscured by clouds below the bottom center lake shore in this NASA Landsat image (N is to the top), was constructed within the SE side of the caldera to a height of more than 1,600 m above the caldera lake surface. The age of the most recent eruptions at Ranau are not known, but fish kills and the smell of sulfur in the late 19th and early 20th centuries may have been related to eruptions within the lake. · Photo: NASA Landsat 7 image (worldwind.arc.nasa.gov) · Wikimedia Commons
Type
Caldera
Country
Indonesia
Region
Sunda-Banda Volcanic Regions / Sunda Volcanic Arc
Elevation
1854m
Coordinates
-4.871, 103.925
Last eruption
Unknown
Tectonic setting
Subduction zone / Continental crust (> 25 km)
Landform
Caldera
Major rock type
Dacite
Geological summary

Ranau is an 8 x 13 km Pleistocene caldera partially filled by the crescent-shaped Lake Ranau. The caldera lies along the Great Sumatran Fault that extends the length of Sumatra. Incremental formation of the caldera culminated in the eruption of the voluminous Ranau Tuff about 0.55 million years ago. A morphologically young post-caldera stratovolcano, Gunung Semuning, was constructed within the SE side of the caldera to a height of more than 1,200 m above the lake surface. The volcano has not been mapped in sufficient detail to determine the age of its latest eruptions, although fish kills and sulfur smells in the late 19th and early 20th centuries may be related to volcanism.

From Wikipedia

This summary is short — open the full article for more detail.

Lake Ranau is a Pleistocene volcanic crater lake in Sumatra, Indonesia.

Wikipedia · CC BY-SA · Read full article →

Eruption history

Summary (VEI over time)
Click a bar to see individual eruptions
1887~1889 · 1 eruptions · max VEI ?1901~1903 · 1 eruptions · max VEI ?18871890189518981901

Detailed timeline

  1. 1903VEI ?Geological estimate
    1903-12-09 – 1903-12-09
  2. 1887VEI ?Geological estimate
    1887-10-07 – 1888-01-20

External links

⚠ For reference only. Not for emergency response.