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News
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]
 

Sunset Crater volcano

cinder cone 2447 m / 8,028 ft
Arizona, USA (mainland exept Alaska), 35.37°N / -111.5°W
Current status: dormant (1 out of 5)
Sunset Crater volcano books
Last update: 6 Jun 2015
Typical eruption style: strombolian
Sunset Crater volcano eruptions: A.D. 1064 or 1065 (dendrochronology) OR around 1100 AD 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) No recent earthquakes
TimeMag. / DepthDistanceLocation
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 about 1080 and 1150 AD.

In the late 1920s, a Hollywood filmmaker planned to use Sunset Crater as movie set and use dynamite to simulate an eruption, but local resistance stopped these plans.

Background:

The eruptions forming Sunset Crater cinder cone were initially considered from tree-ring dating to have begun between the growing seasons of 1064-1065 AD; however, more recent paleomagnetic evidence places the onset of the eruption sometime between about 1080 and 1150 AD.
The largest vent of the eruption, Sunset Crater itself, was the source of the Bonito and Kana-a lava flows that extended about 2.5 km NW and 9.6 km NE. Additional vents along a 10-km-long fissure extending SE produced small spatter ramparts and a 6.4-km-long lava flow to the east.
The Sunset Crater eruption produced a blanket of ash and lapilli covering an area of more than 2100 sq km and forced the abandonment of settlements of the indigenous Sinagua Indians.
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Sources: GVP Sunset Crater volcano information
Arizona Handbook

Sunset Crater Photos:




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