Northern Arizona's San Francisco Volcanic Field, which covers about 4,700 square kilometers (1,800 square miles), is an area of young volcanoes along the southern margin of the …

Oct 6, 2023 · San Francisco Peaks, north of Flagstaff, Arizona, viewed from the northeast. This mountain cluster is the tallest of the San Francisco Volcanic field. Most of the more than 600 …

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 km 2 ) of the southern boundary of the …

Oct 5, 2023 · San Francisco Mountain is a stratovolcano in the San Francisco Volcanic Field and was built by eruptions between about 1 million and 93,000 years ago. San Francisco Mountain …

San Francisco Mountain is the only stratovolcano in the San Francisco Volcanic Field and was built by eruptions between about 1 and 0.4 million years ago. Since then, much of the …

O'Leary Peak is the NE-most silicic center in the San Francisco Mountain volcanic field. Photo by Richard Moore, 1975 (U.S. Geological Survey). The Sunset Crater eruption is considered from …

Timing of Eruptions: The SFM volcanic cone was constructed by multiple eruptions between 900,000 and 400,000 years ago. These can be grouped into three major eruptive stages, …

Nov 19, 2023 · The large San Francisco Peaks stratovolcano was active between 1.4 million and 400,000 years ago and might have reached a height of 16,000 ft (ca. 5000 m). Its summit …

form large volcanic fields. Today the San Francisco Volcanic Field boasts over 600 volcanoes of various shapes and sizes cov-ering over fifty miles of terrain from west to east. The most …

Prior to its collapse due to a landslide and hypothesized Mount St. Helens-like lateral eruption to the northeast (around 200,000 years ago) and subsequent glacial erosion, the San Francisco …