Report on Nyamuragira (DR Congo) — December 1976
Natural Science Event Bulletin, vol. 1, no. 15 (December 1976)
Managing Editor: David Squires.
Nyamuragira (DR Congo) Lava eruption from new SW flank crater on 23 December
Please cite this report as:
Global Volcanism Program, 1976. Report on Nyamuragira (DR Congo) (Squires, D., ed.). Natural Science Event Bulletin, 1:15. Smithsonian Institution. https://doi.org/10.5479/si.GVP.NSEB197612-223020.
1.408°S, 29.2°E; summit elev. 3058 m
All times are local (unless otherwise noted)
An eruption from a new crater on the SW flank of Nyamuragira began on 23 December. The eruption was not believed to present any danger to life or property.
Geologic Background. Africa's most active volcano, Nyamuragira, is a massive high-potassium basaltic shield about 25 km N of Lake Kivu. Also known as Nyamulagira, it has generated extensive lava flows that cover 1500 km2 of the western branch of the East African Rift. The broad low-angle shield volcano contrasts dramatically with the adjacent steep-sided Nyiragongo to the SW. The summit is truncated by a small 2 x 2.3 km caldera that has walls up to about 100 m high. Historical eruptions have occurred within the summit caldera, as well as from the numerous fissures and cinder cones on the flanks. A lava lake in the summit crater, active since at least 1921, drained in 1938, at the time of a major flank eruption. Historical lava flows extend down the flanks more than 30 km from the summit, reaching as far as Lake Kivu.
Information Contacts: Agence France Presse (AFP); Brussels Domestic News Service (DNS).