How was Nyamuragira volcano formed?
Two volcanic cones were visible growing on the eruptive fracture. The cones were built by the accumulation of spatter and ash from two very active 100- to 200-m-high lava fountains. Two large lava flows moved quickly and joined below the lowest cone to form a main flow.
What type of volcano is Mount Nyamuragira?
shield volcano
Nyamuragira,also known as Nyamulagira, is a shield volcano located 9 miles (14 km) northwest of Nyiragongo. Nyamuragira is Africa’s most active volcano. It is a massive basaltic shield volcano that rises about 25 km north of Lake Kivu.
Is Nyamuragira a hotspot?
Satellite images showed hotspots at Nyamuragira volcano in early 2017, indicating ongoing eruptions. An active lava lake was present at Nyamuragira volcano during 2014-16. This is the first time in more than 50 years that a lava lake appeared at the volcano.
What type of eruption is Nyiragongo?
The type of lava erupted by Nyiragongo and many volcanoes in the East Rift zone of Africa, called alkaline lava, has an extremely low viscosity, making it almost as fluid as water. Alkaline lava has a melting temperature in excess of 2,000 degrees Fahrenheit.
What type of volcano is the Nyiragongo volcano?
stratovolcano
Nyiragongo is a stratovolcano—a steep-sloped cone composed of alternating layers of hardened lava, solidified ash, and rocks ejected by previous eruptions. For five decades, the volcano cradled an active lava lake in its summit crater. The lava lake drained in 1977, causing numerous fatalities.
Where is Mount Nyamuragira located?
Democratic Republic of the Congo
Mount Nyamulagira, also spelled Nyamlagiri, or Nyamuragira, volcano in the Virunga Mountains of east-central Africa, 15 miles (24 km) northeast of Sake, in the volcano region of Virunga National Park, Democratic Republic of the Congo. It is about 10,023 feet (3,055 metres) high.
When did Nyamuragira last erupt?
November 12, 2019Nyamuragira / Last eruption
Where is Nyamuragira volcano located?
eastern Congo
The 3,053-meter (10,013-foot) volcano is located in eastern Congo, very near that country’s border with Rwanda. Nyamuragira is the smaller, more violent sibling of Nyiragongo volcano, which devastated the town of Goma with its massive eruption in January 2002.
How did Mt Nyiragongo erupt?
Cause of the eruption The eruption happened on 17 January 2002. The volcano has a lava lake in its crater. Fissures opened up to the south side of the volcano and three streams of lava from the lake drained through the fissures. The lava reached speeds of 60 km/h.
What volcanic region is Nyiragongo found in?
Virunga Mountains
Mount Nyiragongo, active volcano in the Virunga Mountains of east-central Africa. It lies in the volcano region of Virunga National Park, Congo (Kinshasa), near the border with Rwanda, 12 miles (19 km) north of Goma.
What type of plate boundary is Nyiragongo on?
divergent plate boundary
Along this divergent plate boundary are volcanoes such as Mount Nyiragongo, in the Democratic Republic of Congo, and Mount Kilimanjaro, in Kenya. Convergent Plate BoundariesAt a convergent plate boundary, tectonic plates move toward one another and collide.
What type of eruption does Mount Nyiragongo have?
What type of lava is Nyiragongo?
alkaline lava
The type of lava erupted by Nyiragongo and many volcanoes in the East Rift zone of Africa, called alkaline lava, has an extremely low viscosity, making it almost as fluid as water. Alkaline lava has a melting temperature in excess of 2,000 degrees Fahrenheit.
What is the composition of the lava and rocks at Nyiragongo?
Lavas erupted from the parasitic vents are mainly olivine and/or clinopyroxene-phyric rocks. Rushayite and picrites from Muja cone are peculiar high-magnesium lavas resulting from the addition of olivine xenocrysts to melilitic or nephelinitic melts.
What type of lava does Nyiragongo have?
Where is Nyamuragira volcano?
Nyamuragira volcano is an active volcano near the city of Goma of the Democratic Republic of the Congo, situated about 25 km north of Lake Kivu.
What is the difference between Nyamuragira and Nyiragongo?
Nyamuragira,also known as Nyamulagira, is a shield volcano located 9 miles (14 km) northwest of Nyiragongo. Nyamuragira is Africa’s most active volcano. It is a massive basaltic shield volcano that rises about 25 km north of Lake Kivu. The broad low-angle shield volcano contrasts dramatically with its steep-sided neighbor Nyiragongo.
What is the meaning of kuragira Nyamu?
The name is derived from the Bantu verb Kuragira nyamu, meaning to herd animals; nyamu means animal or cows. It has been described as Africa’s most active volcano and has erupted over 40 times since 1885.
Are there any recent eruptions of the Murara volcano?
As well as eruptions from the summit, there have been numerous eruptions from the flanks of the volcano, creating new smaller volcanoes that have lasted only for a short time (e.g. Murara from late 1976 to 1977). Recent eruptions occurred on 2 January 2010 and 8 November 2011.