Pas d'article dans la liste.
stratovolcan 4463 m / 14,642 ft
Équateur, -0.35°S / -78.62°W
Condition actuelle: normal / en sommeil (1 sur 5)
Atacazo volcano is part of the Atacazo–Ninahuilca Volcanic Complex in the Western Cordillera of Ecuador and located 10 km southwest of the capital of Ecuarod, Quito.
The andesitic Atacazo stratovolcano is a successor of the older La Carcacha stratovolcano. It was built above a 6 km wide and 900 m deep caldera. The caldera is breached to the SW and contains 3 Holocene dacitic domes. The youngest lava dome, Ninahuilca, erupted about 2300 years ago. 2 andesitic lava domes are also found on the SE flank.
Several large Plinian eruptions have occurred at the volcano during the past 10,000 years and accompanied the growth of the lava domes. The formation of the most recent dome, Ninahuilca Chico, was accompanied by explosive eruptos that produced pyroclastic flows that flowed up to 35 km distance through valleys towards the west.
Style éruptif tipique
Montrer carte interactive
: explosiveEruptions du volcan Atacazo
: 320 BC ± 16 years
Latest nearby earthquakes
|Heure||Mag. / Profondeur||Distance||Lieu|
|Mon, 19 Apr 2021 (GMT) (1 séisme)|
|19 avril 2021 12:13 (GMT -5) (19 Apr 2021 17:13:53 GMT)|
5 km - Plus
|121 km||Canton Quijos, Provincia de Napo, 62 km à l'ouest de Puerto Francisco de Orellana, Équateur|
|Sun, 18 Apr 2021 (GMT) (1 séisme)|
|18 avril 2021 14:48 (GMT -5) (18 Apr 2021 19:48:01 GMT)|
5 km - Plus
|96 km||Canton Cayambe, Provincia de Pichincha, 48 km au sud-est de Ibarra, Équateur|
|Thu, 15 Apr 2021 (GMT) (1 séisme)|
|2021-04-15 15:08:02 (15 Apr 2021 20:08:02 GMT)|
35 km - Plus
|152 km||Pichincha, 36 km au sud-est de Chone, Provincia de Manabi, Équateur|
Several towns built on the deposits of past eruptions and are considered to be at high risk areas in case of a new major explosive eruption. These include the towns and villages of Tambillo, Uyumbicho, Aloag, Tandapi, Canchacoto.
A stretch of the main Panamerican highway, crossing the highlands from north to south, as well as the road from Aloag to Santo Domingo, linking the Northern highlands to the Coastal region, are also built in the high risk area.
Typical quiescence intervals of Atacazo volcano range between 1000–4000 years. Statistically, the risk of a new eruption is increasing, because the last major eruption is 2300 years back. A future eruption could affect about 70,000 people.
See also: Sentinel hub
| Landsat 8