| San Francisco Volcanic Field (polygenetic volcanic field, cinder cones, stratovolcano) |
The San Francisco volcanic field is a vast area covering more than 10,000 km22 containing cinder cones, lava fields, lava domes and the majestic (extinct) San Francisco Peaks, the highest of all mountains in Arizona, rising 5,000 feet above the surrounding plateau. The area prese... [informations] |
| Sunset Crater (cinder cone) |
 Sunset Crater in northern Arizona is one of the youngest volcanoes in the USA. It is named for its brilliantly colored scoria deposits on the cone and only one of more than 550 vents of the vast San Francisco volcanic field.
The last eruption took place sometime between abo... [informations] |
| Uinkaret (champ volcanique) |
The Uinkaret volcanic field is located at the north rim of the Grand Canyon in Arizona. It contains cinder cones that have produced lava flows that repeatedly cascaded into the Grand Canyon, forming temporary lava dams up to 200 m high. In one of these lava flows, known as the Li... [informations] |
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ActualitésSaturday, Jun 06, 2015
Recent rumors about steaming from Sunset crater, and speculation of a possible reawakening of the volcano are most likely based on false or fake information. The volcano, one of Arziona's youngest, last erupted about 1000 years ago, but shows currently no signs of reawakening. ...
[details]
Plus sur VolcanoDiscovery: Volcano Calendar 2014: Our second calendar with 13 high-quality volcano images, for the year 2013!  Divergent plate boundaries on continents: Learn about the process of breaking up continents along continental rift zones.  Small spherical balls of volcanic ash that form from a wet nucleus falling through a volcanic ash cloud.  Volcanoes in the Solar System: The Earth is not the only place with volcanic activity. Active volcanism also occurs at at least 3 other bodies in our Solar System. | |
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