San Francisco Volcanic Field

Western U.S. - Arizona

SUMMARY

Type: volcanic field
Activity: dormant
Last Eruption: 1065 A.D.
Rock Type: basalt to rhyolite
Eruptive Volume: 500 cu km
Location Map from Xerox PARC
Latitude: 35.40 N
Longitude: 111.75 W

Geologic Background:

The San Francisco volcanic field ranges in composition from basalt to rhyolite and began activity about 6,000,000. Sunset Crater, northeast of San Francisco Mountain, is the youngest feature in the volcanic field.

Historic Activity:

  • None

Recent Activity:

  • None

Data Sources:

  • Volcanoes of North America - Wood and Kienle

ADDITIONAL INFORMATION

Last Update: 1/8/01