Congo - Kinshasa · Stratovulcano
Nyiragongo
- Tipo
- Stratovulcano
- Altitudine
- 3470 m
- Ultima eruzione
- 2026
- Tipo
- Stratovulcano
- Paese
- Congo - Kinshasa
- Regione
- Africa orientale / Albertine Rift Volcanic Province
- Altitudine
- 3470 m
- Coordinate
- -1.520, 29.250
- Ultima eruzione
- 2026
- Contesto tettonico
- Zona di rift / Crosta continentale (> 25 km)
- Forma vulcanica
- Composito
- Roccia principale
- Foidite
Sintesi geologica
The Nyiragongo stratovolcano contained a lava lake in its deep summit crater that was active for half a century before draining catastrophically through its outer flanks in 1977. The steep slopes contrast to the low profile of its neighboring shield volcano, Nyamuragira. Benches in the steep-walled, 1.2-km-wide summit crater mark levels of former lava lakes, which have been observed since the late-19th century. Two older stratovolcanoes, Baruta and Shaheru, are partially overlapped by Nyiragongo on the north and south. About 100 cones are located primarily along radial fissures south of Shaheru, east of the summit, and along a NE-SW zone extending as far as Lake Kivu. Many cones are buried by voluminous lava flows that extend long distances down the flanks, which is characterized by the eruption of foiditic rocks. The extremely fluid 1977 lava flows caused many fatalities, as did lava flows that inundated portions of the major city of Goma in January 2002.
Sintesi da Wikipedia
Riassunto in ingleseMount Nyiragongo is an active stratovolcano with an elevation of 3,470 m (11,385 ft) in the Virunga Mountains associated with the Albertine Rift. It is located inside Virunga National Park, in the North Kivu province in the Democratic Republic of the Congo, about 12 km (7.5 mi) north of the town of Goma and Lake Kivu and just 9.8 km (6.1mi) west of the border with Rwanda. The main crater is about two kilometres (1 mi) wide and usually contains a lava lake. The crater presently has two distinct cooled lava benches within the crater walls – one at about 3,175 m (10,417 ft) and a lower one at about 2,975 m (9,760 ft).
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Storia delle eruzioni
20 registrateGlossarioCronologia dettagliata
- 2002VEI 1Osservata2002-01-17 – 2002-02-03South flank (2800-1570 m), summit crater
- 2002VEI 2Osservata2002-05-17 – 2026-03-17
- 1994VEI 1Osservata1994-06-23 – 1996-03-16
- 1982VEI 1Osservata1982-06-21 – 1982-10-17
- 1977VEI 1Osservata1977-01-10 – 1977-01-10North, south, and west flanks
- 1927VEI 1Osservata1927-03-16 – 1977-01-10
- 1920VEI 1Osservata1920-07-02 – 1921-07-02
- 1918VEI 1Osservata1918-07-02 – fine sconosciuta
- 1911VEI 1Osservata1911-08-16 – 1911-10-16Southern pit
- 1908VEI ?Metodo non indicato1908-12-01 – fine sconosciutaSouthern craters
- 1906VEI 1Osservata1906-07-02 – fine sconosciuta
- 1905VEI 1Osservata1905-07-02 – fine sconosciuta
- 1902VEI 1Osservata1902-07-02 – fine sconosciuta
- 1901VEI 1Osservata1901-07-02 – fine sconosciuta
- 1900VEI 1Osservata1900-07-02 – fine sconosciuta
- 1899VEI 1Osservata1899-07-02 – fine sconosciuta
- 1898VEI 1Osservata1898-07-02 – fine sconosciuta
- 1894VEI 1Osservata1894-07-02 – fine sconosciuta
- 1891VEI ?Metodo non indicato1891-07-02 – fine sconosciutaVolcano Uncertain: probably Nyiragongo
- 1884VEI 1Osservata1884-07-02 – fine sconosciutaSouthern pit
Vulcani nelle vicinanze
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