San Francisco volcanic field

For other uses, see San Francisco (disambiguation).

USGS Digital elevation model of the San Francisco volcanic field
Satellite image of part of the San Francisco volcanic field, presented as a 3D terrain model. Note that North is to the right.

The San Francisco volcanic field is an area of volcanoes in northern Arizona, north of Flagstaff, US. The field covers 1,800 square miles (4,700 km2) of the southern boundary of the Colorado Plateau. The field contains 600 volcanoes ranging in age from nearly 6 million years old to less than 1,000 years (Miocene to Holocene), of which Sunset Crater is the youngest.[1] The highest peak in the field is Humphreys Peak, at Flagstaff's northern perimeter: the peak is Arizona's highest at 12,633 feet (3,851.5 m) and is a part of the San Francisco Peaks, an active[2] stratovolcano complex.

  1. ^ Holm, RF; Moore, RB (1987). "Holocene scoria cone and lava flows at Sunset Crater, northern Arizona". Geological Society of America Centennial Field Guide. pp. 393–97.
  2. ^ "The San Francisco Volcanic Field, Arizona | USGS Fact Sheet 017-01". April 21, 2008. Archived from the original on April 21, 2008. Retrieved November 9, 2022.