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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]

Volcanoes of Arizona (3 volcanoes)

Uinkaret | San Francisco Volcanic Field | Sunset Crater
Uinkaret
(volcanic field)
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]

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
(cinder cone)
Snow-mantled Sunset Crater (left-center), seen from O'Leary Peak to the NW, is the youngest volcanic feature of the San Francisco Mountain volcanic field, which covers a vast area of northern Arizona between Flagstaff and the Grand Canyon. The Sunset Crater eruption began about 1100 AD from a chain of cinder cones and vents trending NW-SE, the largest of which is Sunset Crater. Three lava flows were erupted, the longest of which traveled 11 km to the NE. Photo by Ed Wolfe, 1973 (U.S. Geological Survey)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]

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