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Saturday, 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. ... [more]
|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... [more]|
|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... [more]
|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... [more]|
More on VolcanoDiscovery:
Earthquakes near Volcanoes
: Our world-wide map continuously detects shallow earthquakes near volcanoes. These could be early signs of unrest and often precede eruptions.
Divergent plate boundaries in oceans
: Two ocean plates move apart from each other. Hot upwelling mantle material forms magmas that continuously produce new oceanic crust. An ocean widens.