Karisimbi (DR Congo-Rwanda)

Status Unknown Eruption -8050 4490m
Stratovolcano (Rift zone / Continental crust (> 25 km))

Karisimbi

Karisimbi, the highest of the Virunga volcanoes, is a complex basanitic-to-trachytic volcano with a symmetrical sharp-peaked summit. The 2-km-wide Branca caldera, located SE of the summit, is filled by viscous lava flows and two explosion craters. The large 1.2-km-wide Muntango pit crater is located south of the summit. A broad lava plain, formed from lava flows erupted within the caldera and along a chain of parasitic cones, extends SW. More than 100 parasitic cones erupted along a NNE-SSW zone that extends to the shores of Lake Kivu. The youngest Potassium-Argon date obtained is about 10,000 years before present (de Mulder, 1985). The youngest eruptions produced a group of dome-shaped parasitic vents east of the caldera, which fed viscous lava flows that traveled as far as 12 km E, and lava flows from the SW-flank satellitic lava vents.

The Karisimbi volcanic complex (center) is the highest of the Virunga volcanoes. The symmetrical sharp-peaked summit is flanked to the SE by the 2-km-wide Branca caldera, which is filled by viscous lava flows and two explosion craters. The smaller Muntango pit crater is located south of the summit. A broad lava plain, formed from lava flows erupted within the caldera and along a chain of parasitic cones, extends SW. Eroded Mikeno volcano is at the upper left and Visoke volcano at the upper right of this Landsat image.

NASA Landsat image, 1999 (courtesy of Hawaii Synergy Project, Univ. of Hawaii Institute of Geophysics & Planetology).

Last updated 2019-08-04 00:28:02

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Volcano DR Congo-Rwanda