Sunset Crater Volcano is approximately one thousand years old. The last eruption took place sometime between about 1080 and 1150 AD. Sunset Crater, located in north-central Arizona, actually the youngest volcano found on the 130,000-square-mile at Colorado Plateau. The series of volcano eruption reshaped the nearby landscape, persistently changing the lives of human beings, plants and animals.
It is named for it’s dazzlingly colored scoria deposits on the cone and only one of more then 550 vents of the vast San Francisco volcanic field. The Sunset main crater at the summit of the cone measures approximately 400 feet across, though the base of the cinder cone measures around one mile.
The yellow, red and pink colors of silica iron oxide and gypsum found around the volcano’s summit. The eruption of Sunset Crater resulted in a strangely large amount of volcanic debris for a strombolian-style eruption and had a devastating affect on the flora, fauna and indigenous people living in the surrounding area.
These days Sunset Crater is the centerpiece of the 4.7-square-mile Sunset Crater Volcano National Monument, located only 15 miles to the northeast of Flagstaff, Arizona. It was established on May 26, 1930, through the action of President Herbert Hoover.
Farthermore, almost 75% of the magma erupted at Sunset Crater erupted explosively as scoria, and half of the scoria fell very near it’s source and built Sunset Crater cinder cone, about half blanketed the region with ash and other small volcanic particles.
In the late 1920s, a Hollywood filmmaker planned to use Sunset Crater as film set and use dynamite to simulate an eruption, but local people resistance stopped the plan. Moreover, since 1970, tourists have been prohibited from walking on or to the top of the cinder cone. However, nowadays a self-guided, one-mile-long walking trail permits visitors to experience the volcano’s gigantic size and the eruptive power that once existed here.
The San Francisco Volcanic Field has not experienced volcanic activity for nearly 1,000 years, but researchers predict volcanic activity here is still possible and most likely farther to the east of Sunset Crater. The natural beauty found around Sunset Crater shows it’s exclusive charm daily. Here, the ancient cinder cone is silhouetted against the orange and golden colors of a cool morning mountain sunrise.
Sunset Crater is the youngest volcano in the vast San Francisco Volcanic Field of northern Arizona. The first eruptions must have been spectacular, earthquakes rattled the ground. Sulfurous clouds of gas and ash blew high into the sky. Glowing-hot molten lava spilled over the ground and left jagged black basalt flows that look like they froze in place just last week.
Well, if you’re adventure lover, than plan to hike the trail through the hot lava flow and cinders and you’ll likely discover intriguing, ruggedly dramatic geological features coexisting with twisted Ponderosa Pines and an astonishing array of wildlife.
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Originally posted 2015-12-26 08:34:32.